CN106757000A - The method that composite anti-corrosive coating is prepared using laser melting and coating technique - Google Patents

Abstract

The invention discloses a method for preparing a composite anti-corrosion coating by using laser cladding technology. The specific steps are as follows: (1) Prepare iron-nickel alloy powder for laser cladding: 48-49 parts of Fe, 14.8-15.2 parts of Ni, 14.8-15.2 parts of Cr Parts, W 3.5-4.5 parts, Mo 5.2-5.8 parts, B 2.0-3.0 parts, Si 5.0-6.0 parts, Co0.5-1.5 parts and Al 2.0-3.0 parts, the raw materials are metal powders of corresponding elements; (2) Laser cladding; (3) Prepare modified 505 epoxy resin, and spray the prepared modified 505 epoxy resin on the surface of the laser cladding coating prepared in step (2) to obtain a composite anti-corrosion coating. The laser cladding in the present invention has concentrated heat, fast heating and fast cooling, and small heat-affected zone, which has advantages incomparable to other heat sources for melting between different materials; because the coating film contains glass flakes with a high pigment volume concentration. The film is alternately overlapped and arranged to form a "labyrinth" effect, so the coating film has excellent shielding and penetration resistance, and is resistant to penetration and corrosion by corrosive media.

Description

Method for preparing composite anti-corrosion coating by laser cladding technology

technical field

The invention belongs to the technical field of composite anticorrosion coatings, and in particular relates to a method for preparing composite anticorrosion coatings by using laser cladding technology.

Background technique

With the continuous development of the national economy and basic construction, the requirements for anti-corrosion of national key projects and large-scale projects are getting higher and higher. Large-scale steel equipment, components, and pipelines put forward higher requirements for coatings, that is, coatings are required to have excellent corrosion resistance. Rust and corrosion resistance, but also must have good construction, adaptability and durability. However, the traditional epoxy anti-rust paint has high requirements on the surface treatment of steel structures. When the project that has already been in operation needs to be repaired and painted, a second high-quality rust removal treatment must be carried out, and it must be repaired and repaired every few years. Apply the paint once to prevent the steel from rusting and corroding.

Especially in water conservancy projects, the working conditions are very complicated. The surface coatings not only have to face the corrosion of various acids and alkalis in the water, but also face the erosion of water flow and sediment, which puts high demands on our anti-corrosion and wear-resistant coatings. In addition, in the process of outage and maintenance of water conservancy projects, irreparable losses will be caused by the outage of water conservancy machinery. Therefore, it is necessary to invent a wear-resistant and anti-corrosion coating that can effectively protect water conservancy projects for a long time. Problems to be solved.

Contents of the invention

In order to overcome the deficiencies in the prior art, the invention provides a method for preparing a composite anti-corrosion coating using laser cladding technology.

The purpose of the present invention is achieved in the following manner:

The method for preparing a composite anti-corrosion coating using laser cladding technology, the specific steps are as follows:

(1) Preparation of iron-nickel alloy powder for laser cladding: the iron-nickel alloy powder is made of the following raw materials in parts by weight: 48-49 parts of Fe, 14.8-15.2 parts of Ni, 14.8-15.2 parts of Cr, 3.5-4.5 parts of W , 5.2-5.8 parts of Mo, 2.0-3.0 parts of B, 5.0-6.0 parts of Si, 0.5-1.5 parts of Co and 2.0-3.0 parts of Al, the raw materials are metal powders of corresponding elements;

(2) Laser cladding: CO ₂ laser is used to carry out laser cladding treatment on the blade substrate under the protection of argon gas, the beam diameter is Φ2-4 mm, the laser power is 3-4 kW, and the scanning speed is 2-5 mm /s, and blown coaxially with the laser beam into argon protection with a pressure of 0.40-5.0MPa to prevent oxidation of the melt, and then use sandpaper to smooth the surface after laser cladding;

(3) Prepare modified 505 epoxy resin: the modified 505 epoxy resin coating includes component A and component B;

The component A is made of the following raw materials in parts by weight: 32-45 parts of bisphenol A epoxy resin, 4-7 parts of glass flakes, 13-17 parts of pigment, 4-7 parts of filler, 1.3-45 parts of auxiliary agent 2.2 parts, 2-4 parts of diluent;

The B component is made of the following raw materials in parts by weight: 35-50 parts of polyamide curing agent, 13-17 parts of pigment, 4-7 parts of filler, 0.7-1.2 parts of anti-settling agent, and 40-60 parts of solvent;

The mass ratio of the A component to the B component is 10: (1-1.2);

(4) Preparation of component A of modified 505 epoxy resin: Put bisphenol A epoxy resin, additives and diluents into the disperser for stirring, the stirring time is 20-30min, and the stirring speed is 90-100r /min, then add pigments and fillers, stir for 15-25 min at a stirring speed of 110-120r/min, transfer the stirred mixture to a sand mill for grinding until the fineness is ≤60μm, transfer the ground mixture To the disperser, add glass flakes and stir for 20-40 min, and finally add diluent until the viscosity of the obtained component A is 50-60s measured with a Tu-4 cup viscometer;

(5) Preparation of component B of modified 505 epoxy resin: Add the raw materials of component B into the mixing tank, stir evenly, and then filter the evenly stirred mixture with a filter to obtain component B;

(6) Stir the component A prepared in step (4) and the component B prepared in step (5) separately, and mix and mix evenly according to the mass ratio to obtain the modified 505 epoxy resin, and then mix the prepared modified Spray 505 epoxy resin on the surface of the laser cladding coating prepared in step (2) to obtain a composite anti-corrosion coating.

Specific steps are as follows:

(1) Preparation of iron-nickel alloy powder for laser cladding: the iron-nickel alloy powder is made of the following raw materials in parts by weight: 49 parts of Fe, 15 parts of Ni, 15 parts of Cr, 4 parts of W, 5.5 parts of Mo, and 2.5 parts of B , 5.5 parts of Si, 1 part of Co and 2.5 parts of Al, the raw materials are metal powders of corresponding elements;

(2) Laser cladding: CO ₂ laser is used to carry out laser cladding treatment on the blade substrate under the protection of argon gas. The beam diameter is Φ3 mm, the laser power is 4kW, and the scanning speed is 3 mm/s. Coaxial blowing pressure is 0.45MPa argon protection to prevent melt oxidation, and then use sandpaper to smooth the surface after laser cladding;

(3) Prepare modified 505 epoxy resin: the modified 505 epoxy resin coating includes component A and component B;

The component A is made of the following raw materials in parts by weight: 40 parts of bisphenol A epoxy resin, 5 parts of glass flakes, 15 parts of pigment, 5 parts of filler, 2 parts of auxiliary agent, and 3 parts of diluent;

The B component is made of the following raw materials in parts by weight: 40 parts of polyamide curing agent, 15 parts of pigment, 5 parts of filler, 0.8 part of anti-settling agent, and 50 parts of solvent;

The mass ratio of said component A to component B is 10:1.1;

(4) Preparation of component A of modified 505 epoxy resin: put bisphenol A type epoxy resin, additives and diluents into the disperser for stirring, the stirring time is 25min, the stirring speed is 95r/min, and then Add pigments and fillers, stir for 20 minutes at a stirring speed of 115r/min, transfer the stirred mixture to a sand mill for grinding until the fineness is ≤60μm, transfer the ground mixture to a disperser, and then add glass Scale and stir for 30 min, and finally add diluent until the viscosity of the obtained component A is 55s measured with a Tu-4 cup viscometer;

(5) Preparation of component B of modified 505 epoxy resin: Add the raw materials of component B into the mixing tank, stir evenly, and then filter the evenly stirred mixture with a filter to obtain component B;

(6) Stir the component A prepared in step (4) and the component B prepared in step (5) separately, and mix and mix evenly according to the mass ratio to obtain the modified 505 epoxy resin, and then mix the prepared modified Spray 505 epoxy resin on the surface of the laser cladding coating prepared in step (2) to obtain a composite anti-corrosion coating.

The glass flakes are glass flakes surface-treated with a silane coupling agent, and the particle size is 200-300 mesh.

In the step (5), the pigment of component A and the pigment of component B are one or more of phosphorus zinc white, epoxy iron red, titanium dioxide, zinc phosphate, and N330 carbon black.

In the step (5), both the filler of component A and the filler of component B are a mixture of 1000-1250 mesh talcum powder and calcium carbonate, and the mass ratio of talc powder to calcium carbonate is 4:3.

The auxiliary agent is a mixture of pigment affinity group polymer copolymer dispersant, 606 defoamer, anti-sagging agent and modified urea solution rheology agent, pigment affinity group polymer copolymer dispersant: 606 The mass ratio of defoaming agent: anti-sagging agent: modified urea solution rheological agent is 0.2:0.4:0.3:0.6.

The pigment-affinity group polymer copolymer dispersant is one or more of XH-9001 water-based dispersant, SP-712 water-based dispersant, and DP490 water-based dispersant; the anti-sagging agent is NUVIS BEZ 75, byk410 , one or more of AT720; modified urea solution rheological agent is one or more of DeuRheo201P, DeuRheo 202P, DeuRheo 211F.

The diluent is made up of the following raw materials in parts by weight: 5 parts of xylene, 4 parts of n-butanol, 1 part of propylene glycol methyl ether acetate; the solvent is made up of the raw materials of the following parts by weight: 7 parts of xylene, 3 parts of butanol Parts; the anti-settling agent is polyamide wax anti-settling agent 6900.

Compared with the prior art, the beneficial effects of the present invention are:

(1) The heat of the laser cladding in the present invention is concentrated, the heating is fast, the cooling is fast and the heat-affected zone is small, and it has the advantages that other heat sources cannot match for the melting between different materials.

(2) The present invention has good corrosion resistance, and it has been tested that the salt spray resistance reaches 2500 hours, and the paint film does not bubble or rust. It also has high adhesion, and the adhesion exceeds 12MPa.

(3) Because the glass flakes with high pigment volume concentration in the coating film are arranged alternately and overlapped in the coating film to form a "maze" effect, the coating film has excellent shielding and penetration resistance, and is resistant to penetration and corrosion of corrosive media.

detailed description

Example 1:

The method for preparing a composite anti-corrosion coating using laser cladding technology, the specific steps are as follows:

(1) Preparation of iron-nickel alloy powder for laser cladding: the iron-nickel alloy powder is made of the following raw materials in parts by weight: 48-49 parts of Fe, 14.8-15.2 parts of Ni, 14.8-15.2 parts of Cr, 3.5-4.5 parts of W , 5.2-5.8 parts of Mo, 2.0-3.0 parts of B, 5.0-6.0 parts of Si, 0.5-1.5 parts of Co and 2.0-3.0 parts of Al, the raw materials are metal powders of corresponding elements;

(2) Laser cladding: CO ₂ laser is used to carry out laser cladding treatment on the blade substrate under the protection of argon gas, the beam diameter is Φ2-4 mm, the laser power is 3-4 kW, and the scanning speed is 2-5 mm /s, and blown coaxially with the laser beam into argon protection with a pressure of 0.40-5.0MPa to prevent oxidation of the melt, and then use sandpaper to smooth the surface after laser cladding;

(3) Prepare modified 505 epoxy resin: the modified 505 epoxy resin coating includes component A and component B;

The component A is made of the following raw materials in parts by weight: 32-45 parts of bisphenol A epoxy resin, 4-7 parts of glass flakes, 13-17 parts of pigment, 4-7 parts of filler, 1.3-45 parts of auxiliary agent 2.2 parts, 2-4 parts of diluent;

The B component is made of the following raw materials in parts by weight: 35-50 parts of polyamide curing agent, 13-17 parts of pigment, 4-7 parts of filler, 0.7-1.2 parts of anti-settling agent, and 40-60 parts of solvent;

The mass ratio of the A component to the B component is 10: (1-1.2);

(4) Preparation of component A of modified 505 epoxy resin: Put bisphenol A epoxy resin, additives and diluents into the disperser for stirring, the stirring time is 20-30min, and the stirring speed is 90-100r /min, then add pigments and fillers, stir for 15-25 min at a stirring speed of 110-120r/min, transfer the stirred mixture to a sand mill for grinding until the fineness is ≤60μm, transfer the ground mixture To the disperser, add glass flakes and stir for 20-40 min, and finally add diluent until the viscosity of the obtained component A is 50-60s measured with a Tu-4 cup viscometer;

(5) Preparation of component B of modified 505 epoxy resin: Add the raw materials of component B into the mixing tank, stir evenly, and then filter the evenly stirred mixture with a filter to obtain component B;

(6) Stir the component A prepared in step (4) and the component B prepared in step (5) separately, and mix and mix evenly according to the mass ratio to obtain the modified 505 epoxy resin, and then mix the prepared modified Spray 505 epoxy resin on the surface of the laser cladding coating prepared in step (2) to obtain a composite anti-corrosion coating.

Specific steps are as follows:

(1) Preparation of iron-nickel alloy powder for laser cladding: the iron-nickel alloy powder is made of the following raw materials in parts by weight: 49 parts of Fe, 15 parts of Ni, 15 parts of Cr, 4 parts of W, 5.5 parts of Mo, and 2.5 parts of B , 5.5 parts of Si, 1 part of Co and 2.5 parts of Al, the raw materials are metal powders of corresponding elements;

(2) Laser cladding: CO ₂ laser is used to carry out laser cladding treatment on the blade substrate under the protection of argon gas. The beam diameter is Φ3 mm, the laser power is 4kW, and the scanning speed is 3 mm/s. Coaxial blowing pressure is 0.45MPa argon protection to prevent melt oxidation, and then use sandpaper to smooth the surface after laser cladding;

(3) Prepare modified 505 epoxy resin: the modified 505 epoxy resin coating includes component A and component B;

The component A is made of the following raw materials in parts by weight: 40 parts of bisphenol A epoxy resin, 5 parts of glass flakes, 15 parts of pigment, 5 parts of filler, 2 parts of auxiliary agent, and 3 parts of diluent;

The B component is made of the following raw materials in parts by weight: 40 parts of polyamide curing agent, 15 parts of pigment, 5 parts of filler, 0.8 part of anti-settling agent, and 50 parts of solvent;

The mass ratio of said component A to component B is 10:1.1;

(4) Preparation of component A of modified 505 epoxy resin: put bisphenol A type epoxy resin, additives and diluents into the disperser for stirring, the stirring time is 25min, the stirring speed is 95r/min, and then Add pigments and fillers, stir for 20 minutes at a stirring speed of 115r/min, transfer the stirred mixture to a sand mill for grinding until the fineness is ≤60μm, transfer the ground mixture to a disperser, and then add glass Scale and stir for 30 min, and finally add diluent until the viscosity of the obtained component A is 55s measured with a Tu-4 cup viscometer;

(5) Preparation of component B of modified 505 epoxy resin: Add the raw materials of component B into the mixing tank, stir evenly, and then filter the evenly stirred mixture with a filter to obtain component B;

(6) Stir the component A prepared in step (4) and the component B prepared in step (5) separately, and mix and mix evenly according to the mass ratio to obtain the modified 505 epoxy resin, and then mix the prepared modified Spray 505 epoxy resin on the surface of the laser cladding coating prepared in step (2) to obtain a composite anti-corrosion coating.

The glass flakes are glass flakes treated with a silane coupling agent, and the particle size is 200-300 mesh.

Step (5) The pigment of component A and the pigment of component B are one or more of phosphorus zinc white, epoxy iron red, titanium dioxide, zinc phosphate, and N330 carbon black.

Step (5) The filler of component A and the filler of component B are a mixture of 1000-1250 mesh talc powder and calcium carbonate, and the mass ratio of talc powder to calcium carbonate is 4:3.

The additive is a mixture of pigment affinity group polymer copolymer dispersant, 606 defoamer, anti-sagging agent and modified urea solution rheology agent, pigment affinity group polymer copolymer dispersant: 606 defoamer Agent: anti-sagging agent: the mass ratio of modified urea solution rheology agent is 0.2:0.4:0.3:0.6.

Pigment affinity group polymer copolymer dispersant is one or more of XH-9001 water-based dispersant, SP-712 water-based dispersant, DP490 water-based dispersant; anti-sagging agent is NUVIS BEZ 75, byk410, AT720 One or more of them; the modified urea solution rheological agent is one or more of DeuRheo 201P, DeuRheo 202P, and DeuRheo 211F.

The diluent is composed of the following raw materials in parts by weight: 5 parts of xylene, 4 parts of n-butanol, and 1 part of propylene glycol methyl ether acetate; the solvent is composed of the following raw materials in parts by weight: 7 parts of xylene, 3 parts of butanol; The anti-settling agent is polyamide wax anti-settling agent 6900.

Example 2:

The method for preparing a composite anti-corrosion coating using laser cladding technology, the specific steps are as follows:

(1) Preparation of iron-nickel alloy powder for laser cladding: the iron-nickel alloy powder is made of the following raw materials in parts by weight: Fe48g, Ni 14.8g, Cr 14.8g, W 3.5g, Mo 5.2g, B 2.0g, Si 5.0g, Co0.5g and Al 2.0g, the raw materials are metal powders of corresponding elements;

(2) Laser cladding: CO ₂ laser is used to carry out laser cladding treatment on the blade substrate under the protection of argon gas. The beam diameter is Φ2 mm, the laser power is 3 kW, and the scanning speed is 2 mm/s. The coaxial blowing pressure of the beam is 0.40MPa argon protection to prevent the melt from oxidation, and then use sandpaper to smooth the surface after laser cladding;

(3) Prepare modified 505 epoxy resin: the modified 505 epoxy resin coating includes component A and component B;

Component A is made of the following raw materials in weight percentage: 32g of bisphenol A epoxy resin, 4g of glass flakes, 13g of pigment, 4g of filler, 1.3g of additive, and 2g of diluent;

Component B is made of the following raw materials in weight percentage: polyamide curing agent 35 g, pigment 13 g, filler 4 g, anti-settling agent 0.7 g, solvent 40 g;

The mass ratio of component A to component B is 10:1;

(4) Preparation of component A of modified 505 epoxy resin: put bisphenol A epoxy resin, additives and diluents into the disperser for stirring, the stirring time is 20min, the stirring speed is 90r/min, and then Add pigments and fillers, stir for 15 minutes at a stirring speed of 110r/min, transfer the stirred mixture to a sand mill for grinding until the fineness is ≤60μm, transfer the ground mixture to a disperser, and then add Glass flakes and stir for 20min, and finally add diluent until the viscosity of the obtained component A is 50s measured with a Tu-4 cup viscometer;

(5) Preparation of component B of modified 505 epoxy resin: Add the raw materials of component B into the mixing tank, stir evenly, and then filter the evenly stirred mixture with a filter to obtain component B;

(6) Stir the component A prepared in step (4) and the component B prepared in step (5) separately, and mix and mix evenly according to the mass ratio to obtain the modified 505 epoxy resin, and then mix the prepared modified Spray 505 epoxy resin on the surface of the laser cladding coating prepared in step (2) to obtain a composite anti-corrosion coating.

The glass flakes are glass flakes treated with a silane coupling agent, and the particle size is 200 mesh.

In step (5), both the pigment of component A and the pigment of component B are phosphorous zinc white.

Step (5) Both the filler of component A and the filler of component B are a mixture of calcium carbonate and 1000 mesh talcum powder, and the mass ratio of talc powder to calcium carbonate is 4:3.

The additive is a mixture of pigment affinity group polymer copolymer dispersant, 606 defoamer, anti-sagging agent and modified urea solution rheology agent, pigment affinity group polymer copolymer dispersant: 606 defoamer Agent: anti-sagging agent: the mass ratio of modified urea solution rheology agent is 0.2:0.4:0.3:0.6.

Pigment affinity group polymer copolymer dispersant is XH-9001 water-based dispersant; anti-sagging agent is NUVIS BEZ75; modified urea solution rheology agent is DeuRheo201P.

The diluent is composed of the following raw materials in parts by weight: 5 parts of xylene, 4 parts of n-butanol, and 1 part of propylene glycol methyl ether acetate; the solvent is composed of the following raw materials in parts by weight: 7 parts of xylene, 3 parts of butanol; The anti-settling agent is polyamide wax anti-settling agent 6900.

Example 3:

The method for preparing a composite anti-corrosion coating using laser cladding technology, the specific steps are as follows:

(1) Preparation of iron-nickel alloy powder for laser cladding: the iron-nickel alloy powder is made of the following raw materials in parts by weight: Fe48.1g, Ni 14.85g, Cr 14.85g, W 3.6g, Mo 5.25g, B 2.1 g, Si 5.1g, Co0.6g and Al 2.1g, the raw materials are metal powders of corresponding elements;

(2) Laser cladding: CO ₂ laser is used to carry out laser cladding treatment on the blade substrate under the protection of argon gas. The beam diameter is Φ2.2mm, the laser power is 3.1kW, and the scanning speed is 2.3 mm/s. The laser beam is coaxially blown into the argon gas at a pressure of 0.60MPa to prevent oxidation of the melt, and then the surface after laser cladding is smoothed with sandpaper;

(3) Prepare modified 505 epoxy resin: the modified 505 epoxy resin coating includes component A and component B;

Component A is made of the following raw materials in weight percentage: 34g of bisphenol A epoxy resin, 4.4g of glass flakes, 13.4g of pigment, 4.4g of filler, 1.4g of additive, and 2.2g of diluent;

Component B is made of the following raw materials in weight percentage: polyamide curing agent 36 g, pigment 13.4 g, filler 4.4 g, anti-settling agent 0.75 g, solvent 42 g;

The mass ratio of component A to component B is 10:1.02;

(4) Preparation of component A of modified 505 epoxy resin: Put bisphenol A type epoxy resin, additives and diluents into the disperser for stirring, the stirring time is 21min, the stirring speed is 91r/min, and then Add pigments and fillers, stir for 16 minutes at a stirring speed of 111r/min, transfer the stirred mixture to a sand mill for grinding until the fineness is ≤60 μm, transfer the ground mixture to a disperser, and then add Glass flakes and stirred for 22 min, and finally add diluent until the viscosity of the obtained component A is 51s measured with a Tu-4 cup viscometer;

(5) Preparation of component B of modified 505 epoxy resin: Add the raw materials of component B into the mixing tank, stir evenly, and then filter the evenly stirred mixture with a filter to obtain component B;

(6) Stir the component A prepared in step (4) and the component B prepared in step (5) separately, and mix and mix evenly according to the mass ratio to obtain the modified 505 epoxy resin, and then mix the prepared modified Spray 505 epoxy resin on the surface of the laser cladding coating prepared in step (2) to obtain a composite anti-corrosion coating.

The glass flakes are glass flakes treated with a silane coupling agent, and the particle size is 210 mesh.

Step (5) Both the pigment of component A and the pigment of component B are epoxy iron red.

Step (5) The filler of component A and the filler of component B are a mixture of calcium carbonate and 1025 mesh talcum powder, and the mass ratio of talc powder to calcium carbonate is 4:3.

The additive is a mixture of pigment affinity group polymer copolymer dispersant, 606 defoamer, anti-sagging agent and modified urea solution rheology agent, pigment affinity group polymer copolymer dispersant: 606 defoamer Agent: anti-sagging agent: the mass ratio of modified urea solution rheology agent is 0.2:0.4:0.3:0.6.

Pigment affinity group polymer copolymer dispersant is SP-712 water-based dispersant; anti-sagging agent is byk410; modified urea solution rheological agent is DeuRheo 202P.

Others are the same as embodiment 2.

Example 4:

The method for preparing a composite anti-corrosion coating using laser cladding technology, the specific steps are as follows:

(1) Preparation of iron-nickel alloy powder for laser cladding: the iron-nickel alloy powder is made of the following raw materials in parts by weight: Fe48.2g, Ni14.9g, Cr14.9g, W3.7g, Mo5.3g, B2.2 g, Si 5.2g, Co0.7g and Al 2.2g, the raw materials are metal powders of corresponding elements;

(2) Laser cladding: CO ₂ laser is used to carry out laser cladding treatment on the blade substrate under the protection of argon gas. The beam diameter is Φ2.4mm, the laser power is 3.2kW, and the scanning speed is 2.6mm/s. The laser beam is coaxially blown into the argon gas at a pressure of 0.80MPa to prevent oxidation of the melt, and then use sandpaper to smooth the surface after laser cladding;

(3) Prepare modified 505 epoxy resin: the modified 505 epoxy resin coating includes component A and component B;

Component A is made of the following raw materials in weight percentage: 35g of bisphenol A epoxy resin, 4.8g of glass flakes, 13.7g of pigment, 4.8g of filler, 1.5g of additive, and 2.4g of diluent;

Component B is made of the following raw materials in weight percentage: polyamide curing agent 38 g, pigment 13.7 g, filler 4.8 g, anti-settling agent 0.8 g, solvent 44 g;

The mass ratio of component A to component B is 10:1.04;

(4) Preparation of component A of modified 505 epoxy resin: put bisphenol A epoxy resin, additives and diluents into the disperser for stirring, the stirring time is 22min, the stirring speed is 92r/min, and then Add pigments and fillers, stir for 17 minutes at a stirring speed of 112r/min, transfer the stirred mixture to a sand mill for grinding until the fineness is ≤60μm, transfer the ground mixture to a disperser, and then add Glass flakes and stirred for 24 min, and finally add diluent until the viscosity of the obtained component A is 52s measured with a Tu-4 cup viscometer;

(5) Preparation of component B of modified 505 epoxy resin: Add the raw materials of component B into the mixing tank, stir evenly, and then filter the evenly stirred mixture with a filter to obtain component B;

(6) Stir the component A prepared in step (4) and the component B prepared in step (5) separately, and mix and mix evenly according to the mass ratio to obtain the modified 505 epoxy resin, and then mix the prepared modified Spray 505 epoxy resin on the surface of the laser cladding coating prepared in step (2) to obtain a composite anti-corrosion coating.

The glass flakes are glass flakes treated with a silane coupling agent, and the particle size is 220 mesh.

Step (5) Both the pigment of component A and the pigment of component B are titanium dioxide.

Step (5) The filler of component A and the filler of component B are a mixture of calcium carbonate and 1050 mesh talcum powder, and the mass ratio of talc powder to calcium carbonate is 4:3.

The additive is a mixture of pigment affinity group polymer copolymer dispersant, 606 defoamer, anti-sagging agent and modified urea solution rheology agent, pigment affinity group polymer copolymer dispersant: 606 defoamer Agent: anti-sagging agent: the mass ratio of modified urea solution rheology agent is 0.2:0.4:0.3:0.6.

Pigment affinity group polymer copolymer dispersant is DP490 water-based dispersant; anti-sagging agent is AT720; modified urea solution rheology agent is DeuRheo 211F.

Others are the same as embodiment 2.

Example 5:

The method for preparing a composite anti-corrosion coating using laser cladding technology, the specific steps are as follows:

(1) Preparation of iron-nickel alloy powder for laser cladding: the iron-nickel alloy powder is made of the following raw materials in parts by weight: Fe48.3g, Ni 14.95g, Cr 14.95g, W 3.8g, Mo 5.35g, B 2.3 g, Si 5.3g, Co0.8g and Al 2.3g, the raw materials are metal powders of corresponding elements;

(2) Laser cladding: CO ₂ laser is used to carry out laser cladding treatment on the blade substrate under the protection of argon gas. The beam diameter is Φ2.6mm, the laser power is 3.3kW, and the scanning speed is 2.9mm/s. The laser beam is coaxially blown into the argon gas protection with a pressure of 1.0MPa to prevent the melt from oxidation, and then use sandpaper to smooth the surface after laser cladding;

(3) Prepare modified 505 epoxy resin: the modified 505 epoxy resin coating includes component A and component B;

Component A is made of the following raw materials in weight percentage: 36g of bisphenol A epoxy resin, 5g of glass flakes, 14g of pigment, 5g of filler, 1.6g of additive, and 2.6g of diluent;

Component B is made of the following raw materials in weight percentage: 40 g of polyamide curing agent, 14 g of pigment, 5 g of filler, 0.85 g of anti-settling agent, and 46 g of solvent;

The mass ratio of component A to component B is 10:1.06;

(4) Preparation of component A of modified 505 epoxy resin: Put bisphenol A type epoxy resin, additives and diluents into the disperser for stirring, the stirring time is 23min, the stirring speed is 93r/min, and then Add pigments and fillers, stir for 18 minutes at a stirring speed of 113r/min, transfer the stirred mixture to a sand mill for grinding until the fineness is ≤60μm, transfer the ground mixture to a disperser, and then add Glass flakes and stirred for 26 min, and finally add diluent until the viscosity of the obtained component A is 53s measured with a Tu-4 cup viscometer;

(5) Preparation of component B of modified 505 epoxy resin: Add the raw materials of component B into the mixing tank, stir evenly, and then filter the evenly stirred mixture with a filter to obtain component B;

(6) Stir the component A prepared in step (4) and the component B prepared in step (5) separately, and mix and mix evenly according to the mass ratio to obtain the modified 505 epoxy resin, and then mix the prepared modified Spray 505 epoxy resin on the surface of the laser cladding coating prepared in step (2) to obtain a composite anti-corrosion coating.

The glass flakes are glass flakes treated with a silane coupling agent, and the particle size is 230 mesh.

Step (5) Both the pigment of component A and the pigment of component B are zinc phosphate.

Step (5) The filler of component A and the filler of component B are mixtures of calcium carbonate and 1075 mesh talcum powder, and the mass ratio of talc powder to calcium carbonate is 4:3.

The additive is a mixture of pigment affinity group polymer copolymer dispersant, 606 defoamer, anti-sagging agent and modified urea solution rheology agent, pigment affinity group polymer copolymer dispersant: 606 defoamer Agent: anti-sagging agent: the mass ratio of modified urea solution rheology agent is 0.2:0.4:0.3:0.6.

Pigment affinity group polymer copolymer dispersants are XH-9001 water-based dispersant and SP-712 water-based dispersant; anti-sagging agents are NUVIS BEZ 75 and byk410; modified urea solution rheology agents are DeuRheo201P and DeuRheo 202P.

Others are the same as embodiment 2.

Embodiment 6:

The method for preparing a composite anti-corrosion coating using laser cladding technology, the specific steps are as follows:

(1) Preparation of iron-nickel alloy powder for laser cladding: the iron-nickel alloy powder is made of the following raw materials in parts by weight: Fe48.4g, Ni15g, Cr15g, W3.9g, Mo5.4g, B2.4g, Si 5.4g, Co0.9g and Al 2.4g, the raw materials are metal powders of corresponding elements;

(2) Laser cladding: CO ₂ laser is used to carry out laser cladding treatment on the blade substrate under the protection of argon gas. The beam diameter is Φ2.8mm, the laser power is 3.4kW, and the scanning speed is 3mm/s. The coaxial blowing pressure of the beam is 1.5MPa argon protection to prevent the melt from oxidation, and then use sandpaper to smooth the surface after laser cladding;

(3) Prepare modified 505 epoxy resin: the modified 505 epoxy resin coating includes component A and component B;

Component A is made of the following raw materials in weight percentage: 38g of bisphenol A epoxy resin, 5.4g of glass flakes, 14.4g of pigment, 5.4g of filler, 1.7g of additive, and 2.8g of diluent;

Component B is made of the following raw materials in weight percentage: polyamide curing agent 42 g, pigment 14.4 g, filler 5.4 g, anti-settling agent 0.9 g, solvent 48 g;

The mass ratio of component A to component B is 10:1.08;

(4) Preparation of component A of modified 505 epoxy resin: Put bisphenol A type epoxy resin, additives and diluents into the disperser for stirring, the stirring time is 24min, the stirring speed is 94r/min, and then Add pigments and fillers, stir for 19 minutes at a stirring speed of 114r/min, transfer the stirred mixture to a sand mill for grinding until the fineness is ≤60μm, transfer the ground mixture to a disperser, and then add Glass flakes and stirred for 28 min, and finally add diluent until the viscosity of the obtained component A is 54s measured with a Tu-4 cup viscometer;

(5) Preparation of component B of modified 505 epoxy resin: Add the raw materials of component B into the mixing tank, stir evenly, and then filter the evenly stirred mixture with a filter to obtain component B;

(6) Stir the component A prepared in step (4) and the component B prepared in step (5) separately, and mix and mix evenly according to the mass ratio to obtain the modified 505 epoxy resin, and then mix the prepared modified Spray 505 epoxy resin on the surface of the laser cladding coating prepared in step (2) to obtain a composite anti-corrosion coating.

The glass flakes are glass flakes treated with a silane coupling agent, and the particle size is 240 mesh.

Step (5) Both the pigment of component A and the pigment of component B are N330 carbon black.

Step (5) The filler of component A and the filler of component B are mixtures of calcium carbonate and 1100 mesh talcum powder, and the mass ratio of talc powder to calcium carbonate is 4:3.

The additive is a mixture of pigment affinity group polymer copolymer dispersant, 606 defoamer, anti-sagging agent and modified urea solution rheology agent, pigment affinity group polymer copolymer dispersant: 606 defoamer Agent: anti-sagging agent: the mass ratio of modified urea solution rheology agent is 0.2:0.4:0.3:0.6.

Pigment affinity group polymer copolymer dispersants are XH-9001 water-based dispersant and DP490 water-based dispersant; anti-sagging agents are NUVIS BEZ 75 and AT720; modified urea solution rheology agents are DeuRheo201P and DeuRheo 211F.

Others are the same as embodiment 2.

Embodiment 7:

The method for preparing a composite anti-corrosion coating using laser cladding technology, the specific steps are as follows:

(1) Preparation of iron-nickel alloy powder for laser cladding: the iron-nickel alloy powder is made of the following raw materials in parts by weight: Fe48.5g, Ni 15.05g, Cr 15.05g, W 4g, Mo 5.45g, B 2.5g , Si 5.5g, Co1.0g and Al 2.5g, the raw materials are metal powders of corresponding elements;

(2) Laser cladding: CO ₂ laser is used to carry out laser cladding treatment on the blade substrate under the protection of argon gas. The beam diameter is Φ3mm, the laser power is 3.5kW, and the scanning speed is 3.2mm/s. The coaxial blowing pressure is 2MPa argon protection to prevent oxidation of the melt, and then use sandpaper to smooth the surface after laser cladding;

(3) Prepare modified 505 epoxy resin: the modified 505 epoxy resin coating includes component A and component B;

Component A is made of the following raw materials in weight percentage: 40g of bisphenol A epoxy resin, 5.7g of glass flakes, 14.7g of pigments, 5.7g of fillers, 1.8g of additives, and 3g of diluents;

Component B is made of the following raw materials in weight percentage: 43 g of polyamide curing agent, 14.7 g of pigment, 5.7 g of filler, 0.95 g of anti-settling agent, and 50 g of solvent;

The mass ratio of component A to component B is 10:1.1;

(4) Preparation of component A of modified 505 epoxy resin: put bisphenol A type epoxy resin, additives and diluents into the disperser for stirring, the stirring time is 25min, the stirring speed is 95r/min, and then Add pigments and fillers, stir for 20 min at a stirring speed of 115r/min, transfer the stirred mixture to a sand mill for grinding until the fineness is ≤60μm, transfer the ground mixture to a disperser, and then add Glass flakes and stirred for 30 min, and finally add diluent until the viscosity of the obtained component A is 55s measured with a Tu-4 cup viscometer;

(5) Preparation of component B of modified 505 epoxy resin: Add the raw materials of component B into the mixing tank, stir evenly, and then filter the evenly stirred mixture with a filter to obtain component B;

(6) Stir the component A prepared in step (4) and the component B prepared in step (5) separately, and mix and mix evenly according to the mass ratio to obtain the modified 505 epoxy resin, and then mix the prepared modified Spray 505 epoxy resin on the surface of the laser cladding coating prepared in step (2) to obtain a composite anti-corrosion coating.

The glass flakes are glass flakes treated with a silane coupling agent, and the particle size is 250 mesh.

Step (5) The pigments of component A and component B are phosphor zinc white and epoxy iron red.

Step (5) The filler of component A and the filler of component B are mixtures of calcium carbonate and 1125 mesh talcum powder, and the mass ratio of talc powder to calcium carbonate is 4:3.

The additive is a mixture of pigment affinity group polymer copolymer dispersant, 606 defoamer, anti-sagging agent and modified urea solution rheology agent, pigment affinity group polymer copolymer dispersant: 606 defoamer Agent: anti-sagging agent: the mass ratio of modified urea solution rheology agent is 0.2:0.4:0.3:0.6.

Pigment affinity group polymer interpolymer dispersants are SP-712 water-based dispersant and DP490 water-based dispersant; anti-sagging agents are byk410 and AT720; modified urea solution rheological agents are DeuRheo 202P and DeuRheo 211F.

Others are the same as embodiment 2.

Embodiment 8:

The method for preparing a composite anti-corrosion coating using laser cladding technology, the specific steps are as follows:

(1) Preparation of iron-nickel alloy powder for laser cladding: the iron-nickel alloy powder is made of the following raw materials in parts by weight: Fe48.6g, Ni15.1g, Cr15.1g, W4.1g, Mo5.5g, B2.6 g, Si 5.6g, Co1.1g and Al 2.6g, the raw materials are metal powders of corresponding elements;

(2) Laser cladding: CO ₂ laser is used to carry out laser cladding treatment on the blade substrate under the protection of argon gas, the beam diameter is Φ3.2mm, the laser power is 3.6kW, the scanning speed is 3.5mm/s, and the The laser beam is coaxially blown into the argon gas protection with a pressure of 2.5MPa to prevent the melt from oxidation, and then use sandpaper to smooth the surface after laser cladding;

(3) Prepare modified 505 epoxy resin: the modified 505 epoxy resin coating includes component A and component B;

Component A is made of the following raw materials in weight percentage: 41g of bisphenol A epoxy resin, 6g of glass flakes, 15g of pigment, 6g of filler, 1.9g of additive, and 3.2g of diluent;

Component B is made of the following raw materials in weight percentage: polyamide curing agent 44 g, pigment 15 g, filler 6 g, anti-settling agent 1 g, solvent 52 g;

The mass ratio of component A to component B is 10:1.12;

(4) Preparation of component A of modified 505 epoxy resin: Put bisphenol A type epoxy resin, additives and diluents into the disperser for stirring, the stirring time is 26min, the stirring speed is 96r/min, and then Add pigments and fillers, stir for 21 minutes at a stirring speed of 116r/min, transfer the stirred mixture to a sand mill for grinding until the fineness is ≤ 60 μm, transfer the ground mixture to a disperser, and then add Glass flakes and stirred for 32 min, and finally add diluent until the viscosity of the obtained component A is 56s measured with a 4-cup viscometer;

(5) Preparation of component B of modified 505 epoxy resin: Add the raw materials of component B into the mixing tank, stir evenly, and then filter the evenly stirred mixture with a filter to obtain component B;

(6) Stir the component A prepared in step (4) and the component B prepared in step (5) separately, and mix and mix evenly according to the mass ratio to obtain the modified 505 epoxy resin, and then mix the prepared modified Spray 505 epoxy resin on the surface of the laser cladding coating prepared in step (2) to obtain a composite anti-corrosion coating.

The glass flakes are glass flakes treated with a silane coupling agent, and the particle size is 260 mesh.

In step (5), both the pigments of component A and the pigments of component B are phosphorus zinc white and titanium dioxide.

Step (5) The filler of component A and the filler of component B are a mixture of calcium carbonate and 1150 mesh talcum powder, and the mass ratio of talc powder to calcium carbonate is 4:3.

The additive is a mixture of pigment affinity group polymer copolymer dispersant, 606 defoamer, anti-sagging agent and modified urea solution rheology agent, pigment affinity group polymer copolymer dispersant: 606 defoamer Agent: anti-sagging agent: the mass ratio of modified urea solution rheology agent is 0.2:0.4:0.3:0.6.

Pigment affinity group polymer interpolymer dispersants are XH-9001 water-based dispersant, SP-712 water-based dispersant and DP490 water-based dispersant; anti-sagging agents are NUVIS BEZ 75, byk410 and AT720; modified urea solution rheology The agents are DeuRheo 201P, DeuRheo 202P and DeuRheo 211F.

Others are the same as embodiment 2.

Embodiment 9:

The method for preparing a composite anti-corrosion coating using laser cladding technology, the specific steps are as follows:

(1) Preparation of iron-nickel alloy powder for laser cladding: the iron-nickel alloy powder is made of the following raw materials in parts by weight: Fe48.7g, Ni 15.12g, Cr 15.12g, W 4.2g, Mo 5.55g, B 2.7 g, Si 5.7g, Co1.2g and Al 2.7g, the raw materials are metal powders of corresponding elements;

(2) Laser cladding: CO ₂ laser is used to carry out laser cladding treatment on the blade substrate under the protection of argon gas. The beam diameter is Φ2mm, the laser power is 3.7kW, and the scanning speed is 3.8mm/s. Coaxial blowing pressure is 3MPa argon protection to prevent melt oxidation, and then use sandpaper to smooth the surface after laser cladding;

(3) Prepare modified 505 epoxy resin: the modified 505 epoxy resin coating includes component A and component B;

Component A is made of the following raw materials in weight percentage: 42g of bisphenol A epoxy resin, 6.2g of glass flakes, 15.5g of pigment, 6.2g of filler, 2.0g of additive, and 3.4g of diluent;

Component B is made of the following raw materials in weight percentage: polyamide curing agent 45 g, pigment 15.5 g, filler 6.2 g, anti-settling agent 1.05 g, solvent 54 g;

The mass ratio of component A to component B is 10:1.14;

(4) Preparation of component A of modified 505 epoxy resin: Put bisphenol A type epoxy resin, additives and diluents into the disperser for stirring, the stirring time is 27min, the stirring speed is 97r/min, and then Add pigments and fillers, stir for 22 min at a stirring speed of 117r/min, transfer the stirred mixture to a sand mill for grinding until the fineness is ≤60 μm, transfer the ground mixture to a disperser, and then add Glass flakes and stirred for 34 min, finally add diluent until the viscosity of the obtained component A is 57s measured with a Tu-4 cup viscometer;

(5) Preparation of component B of modified 505 epoxy resin: Add the raw materials of component B into the mixing tank, stir evenly, and then filter the evenly stirred mixture with a filter to obtain component B;

(6) Stir the component A prepared in step (4) and the component B prepared in step (5) separately, and mix and mix evenly according to the mass ratio to obtain the modified 505 epoxy resin, and then mix the prepared modified Spray 505 epoxy resin on the surface of the laser cladding coating prepared in step (2) to obtain a composite anti-corrosion coating.

The glass flakes are glass flakes treated with a silane coupling agent, and the particle size is 270 mesh.

In step (5), both the pigment of component A and the pigment of component B are zinc phosphorous white and zinc phosphate.

Step (5) The filler of component A and the filler of component B are mixtures of calcium carbonate and 1175 mesh talcum powder, and the mass ratio of talc powder to calcium carbonate is 4:3.

The additive is a mixture of pigment affinity group polymer copolymer dispersant, 606 defoamer, anti-sagging agent and modified urea solution rheology agent, pigment affinity group polymer copolymer dispersant: 606 defoamer Agent: anti-sagging agent: the mass ratio of modified urea solution rheology agent is 0.2:0.4:0.3:0.6.

Pigment affinity group polymer copolymer dispersant is XH-9001 water-based dispersant; anti-sagging agent is NUVIS BEZ75; modified urea solution rheology agent is DeuRheo 202P.

Others are the same as embodiment 2.

Example 10:

The method for preparing a composite anti-corrosion coating using laser cladding technology, the specific steps are as follows:

(1) Preparation of iron-nickel alloy powder for laser cladding: the iron-nickel alloy powder is made of the following raw materials in parts by weight: Fe48.8g, Ni15.15g, Cr15.15g, W4.3g, Mo5.6g, B2.8 g, Si 5.8g, Co1.3g and Al 2.8g, the raw materials are metal powders of corresponding elements;

(2) Laser cladding: CO ₂ laser is used to carry out laser cladding treatment on the blade substrate under the protection of argon gas. The beam diameter is Φ3.6mm, the laser power is 3.8kW, and the scanning speed is 4mm/s. The coaxial blowing pressure of the beam is 3.5MPa argon protection to prevent the oxidation of the melt, and then use sandpaper to smooth the surface after laser cladding;

(3) Prepare modified 505 epoxy resin: the modified 505 epoxy resin coating includes component A and component B;

Component A is made of the following raw materials in weight percentage: 43g of bisphenol A epoxy resin, 6.5g of glass flakes, 16g of pigment, 6.5g of filler, 2.1g of additive, and 3.6g of diluent;

Component B is made of the following raw materials in weight percentage: 46 g of polyamide curing agent, 16 g of pigment, 6.5 g of filler, 1.1 g of anti-settling agent, and 56 g of solvent;

The mass ratio of component A to component B is 10:1.16;

(4) Preparation of component A of modified 505 epoxy resin: Put bisphenol A epoxy resin, additives and diluents into the disperser for stirring, the stirring time is 28min, the stirring speed is 98r/min, and then Add pigments and fillers, stir for 23 minutes at a stirring speed of 118r/min, transfer the stirred mixture to a sand mill for grinding until the fineness is ≤60μm, transfer the ground mixture to a disperser, and then add Glass flakes and stirred for 36 min, and finally add diluent until the viscosity of the obtained component A is 58s measured with a 4-cup viscometer;

(5) Preparation of component B of modified 505 epoxy resin: Add the raw materials of component B into the mixing tank, stir evenly, and then filter the evenly stirred mixture with a filter to obtain component B;

(6) Stir the component A prepared in step (4) and the component B prepared in step (5) separately, and mix and mix evenly according to the mass ratio to obtain the modified 505 epoxy resin, and then mix the prepared modified Spray 505 epoxy resin on the surface of the laser cladding coating prepared in step (2) to obtain a composite anti-corrosion coating.

The glass flakes are glass flakes treated with a silane coupling agent, and the particle size is 280 mesh.

Step (5) The pigments of component A and component B are both phosphor zinc white and N330 carbon black.

Step (5) The filler of component A and the filler of component B are a mixture of calcium carbonate and 1200 mesh talcum powder, and the mass ratio of talc powder to calcium carbonate is 4:3.

The additive is a mixture of pigment affinity group polymer copolymer dispersant, 606 defoamer, anti-sagging agent and modified urea solution rheology agent, pigment affinity group polymer copolymer dispersant: 606 defoamer Agent: anti-sagging agent: the mass ratio of modified urea solution rheology agent is 0.2:0.4:0.3:0.6.

Pigment affinity group polymer copolymer dispersant is XH-9001 water-based dispersant; anti-sagging agent is byk410; modified urea solution rheological agent is DeuRheo201P.

Others are the same as embodiment 2.

Example 11:

The method for preparing a composite anti-corrosion coating using laser cladding technology, the specific steps are as follows:

(1) Preparation of iron-nickel alloy powder for laser cladding: the iron-nickel alloy powder is made of the following raw materials in parts by weight: Fe48.9g, Ni15.18g, Cr15.18g, W4.4g, Mo5.7g, B2.9 g, Si 5.9g, Co1.4g and Al 2.9g, the raw materials are metal powders of corresponding elements;

(2) Laser cladding: CO ₂ laser is used to carry out laser cladding treatment on the blade substrate under the protection of argon gas. The beam diameter is Φ3.8mm, the laser power is 3.9kW, and the scanning speed is 4.5mm/s. The laser beam is coaxially blown into the argon gas with a pressure of 4MPa to prevent oxidation of the melt, and then use sandpaper to smooth the surface after laser cladding;

(3) Prepare modified 505 epoxy resin: the modified 505 epoxy resin coating includes component A and component B;

Component A is made of the following raw materials in weight percentage: 44g of bisphenol A epoxy resin, 6.8g of glass flakes, 16.5g of pigment, 6.8g of filler, 2.2g of additive, and 3.8g of diluent;

Component B is made of the following raw materials in weight percentage: 48 g of polyamide curing agent, 16.5 g of pigment, 6.8 g of filler, 1.15 g of anti-settling agent, and 58 g of solvent;

The mass ratio of component A to component B is 10:1.18;

(4) Preparation of component A of modified 505 epoxy resin: put bisphenol A type epoxy resin, additives and diluents into the disperser for stirring, the stirring time is 29min, the stirring speed is 99r/min, and then Add pigments and fillers, stir for 24 min at a stirring speed of 119r/min, transfer the stirred mixture to a sand mill for grinding until the fineness is ≤60μm, transfer the ground mixture to a disperser, and then add Glass flakes and stirred for 38 min, and finally add diluent until the viscosity of the obtained component A is 59s measured with a 4-cup viscometer;

(5) Preparation of component B of modified 505 epoxy resin: Add the raw materials of component B into the mixing tank, stir evenly, and then filter the evenly stirred mixture with a filter to obtain component B;

(6) Stir the component A prepared in step (4) and the component B prepared in step (5) separately, and mix and mix evenly according to the mass ratio to obtain the modified 505 epoxy resin, and then mix the prepared modified Spray 505 epoxy resin on the surface of the laser cladding coating prepared in step (2) to obtain a composite anti-corrosion coating.

The glass flakes are glass flakes treated with a silane coupling agent, and the particle size is 290 mesh.

Step (5) The pigment of component A and the pigment of component B are epoxy iron red and titanium dioxide.

Step (5) The filler of component A and the filler of component B are a mixture of calcium carbonate and 1225 mesh talcum powder, and the mass ratio of talc powder to calcium carbonate is 4:3.

The additive is a mixture of pigment affinity group polymer copolymer dispersant, 606 defoamer, anti-sagging agent and modified urea solution rheology agent, pigment affinity group polymer copolymer dispersant: 606 defoamer Agent: anti-sagging agent: the mass ratio of modified urea solution rheology agent is 0.2:0.4:0.3:0.6.

The pigment affinity group polymer copolymer dispersant is SP-712 water-based dispersant; the anti-sagging agent is NUVIS BEZ75; the modified urea solution rheology agent is DeuRheo201P.

Others are the same as embodiment 2.

Example 12:

The method for preparing a composite anti-corrosion coating using laser cladding technology, the specific steps are as follows:

(1) Preparation of iron-nickel alloy powder for laser cladding: the iron-nickel alloy powder is made of the following raw materials in parts by weight: Fe49g, Ni 15.2g, Cr 15.2g, W 4.5g, Mo 5.8g, B 3.0g, Si 6.0g, Co1.5g and Al 3.0g, the raw materials are metal powders of corresponding elements;

(2) Laser cladding: CO ₂ laser is used to carry out laser cladding treatment on the blade substrate under the protection of argon gas. The beam diameter is Φ4.0mm, the laser power is 4kW, and the scanning speed is 5mm/s. Coaxial blowing pressure is 5MPa argon protection to prevent melt oxidation, and then use sandpaper to smooth the surface after laser cladding;

(3) Prepare modified 505 epoxy resin: the modified 505 epoxy resin coating includes component A and component B;

Component A is made of the following raw materials in weight percentage: 45g of bisphenol A epoxy resin, 7g of glass flakes, 17g of pigment, 7g of filler, 1.35g of additive, and 4g of diluent;

Component B is made of the following raw materials in weight percentage: polyamide curing agent 50 g, pigment 17 g, filler 7 g, anti-settling agent 1.2 g, solvent 60 g;

The mass ratio of component A to component B is 10:1.2;

(4) Preparation of component A of modified 505 epoxy resin: Put bisphenol A epoxy resin, additives and diluents into the disperser for stirring, stirring time is 30min, stirring speed is 100r/min, and then Add pigments and fillers, stir for 25 min at a stirring speed of 120r/min, transfer the stirred mixture to a sand mill for grinding until the fineness is ≤60μm, transfer the ground mixture to a disperser, and then add Glass flakes and stirred for 40 min, and finally add diluent until the viscosity of the obtained component A is 60s measured with a Tu-4 cup viscometer;

(5) Preparation of component B of modified 505 epoxy resin: Add the raw materials of component B into the mixing tank, stir evenly, and then filter the evenly stirred mixture with a filter to obtain component B;

(6) Stir the component A prepared in step (4) and the component B prepared in step (5) separately, and mix and mix evenly according to the mass ratio to obtain the modified 505 epoxy resin, and then mix the prepared modified Spray 505 epoxy resin on the surface of the laser cladding coating prepared in step (2) to obtain a composite anti-corrosion coating.

The glass flakes are glass flakes treated with a silane coupling agent, and the particle size is 300 mesh.

Step (5) The pigments of component A and component B are epoxy iron red and zinc phosphate.

Step (5) The filler of component A and the filler of component B are a mixture of calcium carbonate and 1250 mesh talcum powder, and the mass ratio of talc powder to calcium carbonate is 4:3.

The additive is a mixture of pigment affinity group polymer copolymer dispersant, 606 defoamer, anti-sagging agent and modified urea solution rheology agent, pigment affinity group polymer copolymer dispersant: 606 defoamer Agent: anti-sagging agent: the mass ratio of modified urea solution rheology agent is 0.2:0.4:0.3:0.6.

Pigment affinity group polymer copolymer dispersant is XH-9001 water-based dispersant; anti-sagging agent is byk410; modified urea solution rheology agent is DeuRheo 211F.

Others are the same as embodiment 2.

Embodiment 13:

The pigments are epoxy iron red and N330 carbon black. Others are the same as in Example 12.

Embodiment 14:

The pigments are titanium dioxide and zinc phosphate. Others are the same as in Example 12.

Embodiment 15:

The pigments are titanium dioxide and N330 carbon black. Others are the same as in Example 12.

Embodiment 16:

The pigments are zinc phosphate and N330 carbon black. Others are the same as in Example 12.

Embodiment 17:

The pigments are phosphorus zinc white, epoxy iron red and titanium dioxide. Others are the same as in Example 12.

Embodiment 18:

The pigments are phosphorus zinc white, epoxy iron red and zinc phosphate. Others are the same as in Example 12.

Embodiment 19:

The pigments are phosphorus zinc white, epoxy iron red and N330 carbon black. Others are the same as in Example 12.

Embodiment 20:

The pigments are phosphorus zinc white, titanium dioxide and zinc phosphate. Others are the same as in Example 12.

Embodiment 21:

The pigments are phosphorus zinc white, titanium dioxide and N330 carbon black. Others are the same as in Example 12.

Embodiment 22:

The pigments are phosphorus zinc white, zinc phosphate and N330 carbon black. Others are the same as in Example 12.

Embodiment 23:

The pigments are epoxy iron red, titanium dioxide and zinc phosphate. Others are the same as in Example 12.

Embodiment 24:

The pigments are epoxy iron red, titanium dioxide and N330 carbon black. Others are the same as in Example 12.

Embodiment 25:

The pigments are epoxy iron red, zinc phosphate and N330 carbon black. Others are the same as in Example 12.

Embodiment 26:

The pigments are titanium dioxide, zinc phosphate and N330 carbon black. Others are the same as in Example 12.

Embodiment 27:

The pigments are phosphorus zinc white, epoxy iron red, titanium dioxide and zinc phosphate. Others are the same as in Example 12.

Embodiment 28:

The pigments are phosphorus zinc white, epoxy iron red, titanium dioxide and N330 carbon black. Others are the same as in Example 12.

Example 29:

The pigments are phosphorus zinc white, titanium dioxide, zinc phosphate and N330 carbon black. Others are the same as in Example 12.

Example 30:

The pigments are phosphorus zinc white, epoxy iron red, zinc phosphate and N330 carbon black. Others are the same as in Example 12.

Example 31:

The pigments are epoxy iron red, titanium dioxide, zinc phosphate and N330 carbon black. Others are the same as in Example 12.

Example 32:

The pigments are phosphorus zinc white, epoxy iron red, titanium dioxide, zinc phosphate and N330 carbon black. Others are the same as in Example 12.

Example 33:

The method for preparing a composite anti-corrosion coating using laser cladding technology, the specific steps are as follows:

(1) Preparation of iron-nickel alloy powder for laser cladding: the iron-nickel alloy powder is made of the following raw materials in parts by weight: Fe49g, Ni 15g, Cr 15g, W 4g, Mo 5.5g, B 2.5g, Si 5.5 g, Co1 g and Al 2.5 g, the raw materials are metal powders of corresponding elements;

(2) Laser cladding: CO ₂ laser is used to carry out laser cladding treatment on the blade substrate under the protection of argon gas. The beam diameter is Φ3 mm, the laser power is 4kW, and the scanning speed is 3 mm/s. Coaxial blowing pressure is 0.45MPa argon protection to prevent melt oxidation, and then use sandpaper to smooth the surface after laser cladding;

(3) Prepare modified 505 epoxy resin: the modified 505 epoxy resin coating includes component A and component B;

Component A is made of the following raw materials in parts by weight: 40 g of bisphenol A epoxy resin, 5 g of glass flakes, 15 g of pigment, 5 g of filler, 2 g of additive, and 3 g of diluent;

Component B is made of the following raw materials in parts by weight: 40 g of polyamide curing agent, 15 g of pigment, 5 g of filler, 0.8 g of anti-settling agent, and 50 g of solvent;

The mass ratio of component A to component B is 10:1.1;

(4) Preparation of component A of modified 505 epoxy resin: put bisphenol A type epoxy resin, additives and diluents into the disperser for stirring, the stirring time is 25min, the stirring speed is 95r/min, and then Add pigments and fillers, stir for 20 minutes at a stirring speed of 115r/min, transfer the stirred mixture to a sand mill for grinding until the fineness is ≤60μm, transfer the ground mixture to a disperser, and then add glass Scale and stir for 30 min, and finally add diluent until the viscosity of the obtained component A is 55s measured with a Tu-4 cup viscometer;

(5) Preparation of component B of modified 505 epoxy resin: Add the raw materials of component B into the mixing tank, stir evenly, and then filter the evenly stirred mixture with a filter to obtain component B;

(6) Stir the component A prepared in step (4) and the component B prepared in step (5) separately, and mix and mix evenly according to the mass ratio to obtain the modified 505 epoxy resin, and then mix the prepared modified Spray 505 epoxy resin on the surface of the laser cladding coating prepared in step (2) to obtain a composite anti-corrosion coating.

Others are the same as in Example 12.

Example 34:

The method for preparing a composite anti-corrosion coating using laser cladding technology, the specific steps are as follows:

(1) Preparation of iron-nickel alloy powder for laser cladding: the iron-nickel alloy powder is made of the following raw materials in parts by weight: Fe49 g, Ni 15.2 g, Cr 15.2 g, W 4.5 g, Mo 5.8 g, B 3.0 g , Si 6.0 g, Co1.5 g and Al 3.0 g, the raw materials are metal powders of corresponding elements;

(2) Laser cladding: CO ₂ laser is used to carry out laser cladding treatment on the blade substrate under the protection of argon gas. The beam diameter is Φ4 mm, the laser power is 4kW, and the scanning speed is 5 mm/s. The coaxial blowing pressure is 5MPa argon protection to prevent the oxidation of the melt, and then use sandpaper to smooth the surface after laser cladding;

(3) Prepare modified 505 epoxy resin: the modified 505 epoxy resin coating includes component A and component B;

Component A is made of the following raw materials in parts by weight: 43 g of bisphenol A epoxy resin, 7 g of glass flakes, 17 g of pigment, 7 g of filler, 2.2 g of additive, and 4 g of diluent;

Component B is made of the following raw materials in parts by weight: polyamide curing agent 50 g, pigment 17 g, filler 7 g, anti-settling agent 1.2 g, solvent 60 g;

The mass ratio of component A to component B is 10:1.2;

(4) Preparation of component A of modified 505 epoxy resin: Put bisphenol A epoxy resin, additives and diluents into the disperser for stirring, stirring time is 30min, stirring speed is 100r/min, and then Add pigments and fillers, stir for 25 minutes at a stirring speed of 120r/min, transfer the stirred mixture to a sand mill for grinding until the fineness is ≤60μm, transfer the ground mixture to a disperser, and then add glass Scale and stir for 40 min, and finally add diluent until the viscosity of the obtained component A is 60s measured with a Tu-4 cup viscometer;

(5) Preparation of component B of modified 505 epoxy resin: Add the raw materials of component B into the mixing tank, stir evenly, and then filter the evenly stirred mixture with a filter to obtain component B;

(6) Stir the component A prepared in step (4) and the component B prepared in step (5) separately, and mix and mix evenly according to the mass ratio to obtain the modified 505 epoxy resin, and then mix the prepared modified Spray 505 epoxy resin on the surface of the laser cladding coating prepared in step (2) to obtain a composite anti-corrosion coating.

Others are the same as in Example 12.

Example 35:

The method for preparing a composite anti-corrosion coating using laser cladding technology, the specific steps are as follows:

(1) Preparation of iron-nickel alloy powder for laser cladding: the iron-nickel alloy powder is made of the following raw materials in parts by weight: Fe48g, Ni 14.8g, Cr 14.8g, W 3.5g, Mo 5.2g, B 2.0g, Si 5.0 g, Co0.5 g and Al 2.0 g, the raw materials are metal powders of corresponding elements;

(2) Laser cladding: CO ₂ laser is used to carry out laser cladding treatment on the blade substrate under the protection of argon gas. The beam diameter is Φ2 mm, the laser power is 3kW, and the scanning speed is 2 mm/s. Coaxial blowing pressure is 0.4MPa argon protection to prevent melt oxidation, and then use sandpaper to smooth the surface after laser cladding;

(3) Prepare modified 505 epoxy resin: the modified 505 epoxy resin coating includes component A and component B;

Component A is made of the following raw materials in parts by weight: 33 g of bisphenol A epoxy resin, 4 g of glass flakes, 13 g of pigment, 4 g of filler, 1.3 g of additive, and 2 g of diluent;

Component B is made of the following raw materials in parts by weight: polyamide curing agent 35 g, pigment 13 g, filler 4 g, anti-settling agent 0.7 g, solvent 40 g;

The mass ratio of component A to component B is 10:1;

(4) Preparation of component A of modified 505 epoxy resin: put bisphenol A epoxy resin, additives and diluents into the disperser for stirring, the stirring time is 20min, the stirring speed is 90r/min, and then Add pigments and fillers, stir for 15 minutes at a stirring speed of 110r/min, transfer the stirred mixture to a sand mill for grinding until the fineness is ≤60 μm, transfer the ground mixture to a disperser, and then add glass Scale and stir for 20 min, and finally add diluent until the viscosity of the obtained component A is 50s measured with a Tu-4 cup viscometer;

(5) Preparation of component B of modified 505 epoxy resin: Add the raw materials of component B into the mixing tank, stir evenly, and then filter the evenly stirred mixture with a filter to obtain component B;

(6) Stir the component A prepared in step (4) and the component B prepared in step (5) separately, and mix and mix evenly according to the mass ratio to obtain the modified 505 epoxy resin, and then mix the prepared modified Spray 505 epoxy resin on the surface of the laser cladding coating prepared in step (2) to obtain a composite anti-corrosion coating.

Others are the same as in Example 12.

Example 36:

The method for preparing a composite anti-corrosion coating using laser cladding technology, the specific steps are as follows:

(1) Preparation of iron-nickel alloy powder for laser cladding: the iron-nickel alloy powder is made of the following raw materials in parts by weight: Fe49g, Ni 15g, Cr 15g, W 4g, Mo 5.5g, B 2.5g, Si 5.5 g, Co1 g and Al 2.5 g, the raw materials are metal powders of corresponding elements;

(2) Laser cladding: CO ₂ laser is used to carry out laser cladding treatment on the blade substrate under the protection of argon gas. The beam diameter is Φ3 mm, the laser power is 4kW, and the scanning speed is 3 mm/s. Coaxial blowing pressure is 0.45MPa argon protection to prevent melt oxidation, and then use sandpaper to smooth the surface after laser cladding;

(3) Prepare modified 505 epoxy resin: the modified 505 epoxy resin coating includes component A and component B;

Component A is made of the following raw materials in parts by weight: 40 g of bisphenol A epoxy resin, 5 g of glass flakes, 15 g of pigment, 5 g of filler, 2 g of additive, and 3 g of diluent;

Component B is made of the following raw materials in parts by weight: 40 g of polyamide curing agent, 15 g of pigment, 5 g of filler, 0.8 g of anti-settling agent, and 50 g of solvent;

The mass ratio of component A to component B is 10:1.1;

(4) Preparation of component A of modified 505 epoxy resin: put bisphenol A type epoxy resin, additives and diluents into the disperser for stirring, the stirring time is 25min, the stirring speed is 95r/min, and then Add pigments and fillers, stir for 20 minutes at a stirring speed of 115r/min, transfer the stirred mixture to a sand mill for grinding until the fineness is ≤60μm, transfer the ground mixture to a disperser, and then add glass Scale and stir for 30 min, and finally add diluent until the viscosity of the obtained component A is 55s measured with a Tu-4 cup viscometer;

(5) Preparation of component B of modified 505 epoxy resin: Add the raw materials of component B into the mixing tank, stir evenly, and then filter the evenly stirred mixture with a filter to obtain component B;

(6) Stir the component A prepared in step (4) and the component B prepared in step (5) separately, and mix and mix evenly according to the mass ratio to obtain the modified 505 epoxy resin, and then mix the prepared modified Spray 505 epoxy resin on the surface of the laser cladding coating prepared in step (2) to obtain a composite anti-corrosion coating.

Others are the same as in Example 12.

Comparative example:

(1) Prepare modified 954 epoxy resin: the modified 954 epoxy resin includes component A and component B;

Component A is made of the following raw materials in parts by weight: epoxy silicone resin 35g, glass flakes 14g, pigment 13g, filler 4g, additive 1.3g, diluent 2g;

Component B is made of the following raw materials in parts by weight: polyamide curing agent 35g, pigment 13g, filler 4g, anti-settling agent 0.7g, solvent 40g;

The mass ratio of component A to component B is 10:1;

(2) Preparation of component A: Put epoxy silicone resin, additives and diluents into the disperser and stir for 20 minutes at a stirring speed of 90 r/min, then add pigments and fillers, stir for 15 minutes, and stir The speed is 110r/min. Transfer the stirred mixture to a sand mill for grinding until the fineness is ≤60μm. Transfer the ground mixture to a disperser, then add glass flakes and stir for 20 minutes, and finally add diluent The viscosity of the obtained component A is measured as 50s with a coating-4 cup viscometer;

(3) Preparation of component B: Add the ingredients of component B into the mixing tank, stir evenly, and then filter the well-stirred mixture with a strainer to obtain component B;

(4) Stir the components A and B separately, and mix them evenly according to the mass ratio to obtain the modified 954 epoxy resin, and then spray the prepared modified 954 epoxy resin on the surface of the device to be sprayed, An anti-corrosion coating can be prepared.

The glass flakes are glass flakes treated with a silane coupling agent, and the particle size is 200 mesh.

In the step (1), both the pigment of component A and the pigment of component B are phosphor zinc white.

In step (1), the filler of component A and the filler of component B are mixtures of calcium carbonate and 1000-mesh talcum powder, and the mass ratio of talc powder to calcium carbonate is 4:3.

The additive is a mixture of pigment affinity group polymer copolymer dispersant, 606 defoamer, anti-sagging agent and modified urea solution rheology agent, pigment affinity group polymer copolymer dispersant: 606 defoamer Agent: anti-sagging agent: the mass ratio of modified urea solution rheology agent is 0.2:0.4:0.3:0.6.

Pigment affinity group polymer copolymer dispersant is XH-9001 water-based dispersant; anti-sagging agent is NUVIS BEZ75; modified urea solution rheology agent is DeuRheo201P.

The diluent is composed of the following raw materials in parts by weight: 5 parts of xylene, 4 parts of n-butanol, and 1 part of propylene glycol methyl ether acetate; the solvent is composed of the following raw materials in parts by weight: 7 parts of xylene, 3 parts of butanol; The anti-settling agent is polyamide wax anti-settling agent 6900.

Each performance index reference value of the present invention is as follows:

It can be seen from the above table that the invention has excellent impact resistance and adhesion performance, which reduces the bump damage of mechanical equipment, and its anti-corrosion performance far exceeds that of similar commercially available products. It is an ideal epoxy anti-corrosion coating. It can be applied to the coating application of various mechanical equipment products.

What has been described above is only the preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, some changes and improvements can be made without departing from the overall concept of the present invention, and these should also be regarded as the present invention. scope of protection.

Claims (8)

1. the method that composite anti-corrosive coating is prepared using laser melting and coating technique, it is characterised in that：Comprise the following steps that：

（1）Prepare the Fe-Ni Alloy Powder of laser melting coating：The Fe-Ni Alloy Powder is made up of the raw material of following weight portion：Fe 48-49 parts, Ni 14.8-15.2 parts, Cr 14.8-15.2 parts, W 3.5-4.5 parts, Mo 5.2-5.8 parts, B 2.0-3.0 parts, Si 5.0-6.0 parts, Co0.5-1.5 parts and Al 2.0-3.0 parts, raw material chooses the metal dust of respective element；

（2）Laser melting coating：Using CO₂Laser carries out Laser Cladding Treatment, light beam under argon gas guard mode to blade base A diameter of Φ 2-4 mm, laser power is 3-4 kW, and sweep speed is 2-5 mm/s, and pressure is coaxially blown into laser beam is 0.40-5.0MPa argon gas is protected, and to prevent melt oxidation, the surface after laser melting coating is polished flat with sand paper then；

（3）Prepare modified 505 epoxy resin：Modified 505 epoxy coatings include first component and component B；

The first component is prepared from the following raw materials in parts by weight：Bisphenol A type epoxy resin 32-45 parts, glass flake 4-7 parts, Pigment 13-17 parts, filler 4-7 parts, auxiliary agent 1.3-2.2 parts, diluent 2-4 parts；

The component B is prepared from the following raw materials in parts by weight：Polyamide curing agent 35-50 parts, pigment 13-17 parts, filler 4- 7 parts, anti-settling agent 0.7-1.2 parts, solvent 40-60 parts；

The first component is 10 with the mass ratio of component B：（1-1.2）；

（4）The preparation of the first component of modified 505 epoxy resin：Bisphenol A type epoxy resin, auxiliary agent and diluent are put into dispersion machine In be stirred, mixing time is 20-30min, and mixing speed is 90-100r/min, is subsequently adding pigment and filler, stirring 15-25 min, mixing speed 110-120r/min, the mixture after stirring are transferred in sand mill and are ground, and are ground to Fineness≤60 μm, the mixture after grinding is transferred in dispersion machine, is added glass flake and is stirred 20-40 min, finally Add diluent to the viscosity of gained first component be with apply -4 glasss of viscosity meters be 50-60s；

（5）The preparation of the component B of modified 505 epoxy resin：By in each raw material addition agitator tank of component B, stir, so Afterwards by the mixture strainer filtering for stirring, you can obtain component B；

（6）By step（4）The first component and step of preparation（5）The component B of preparation stirs respectively, and mixes in mass ratio Allotment uniformly obtains final product modified 505 epoxy resin, then deployed modified 505 epoxy resin are sprayed on into step（2）What is prepared swashs Light cladding coating surface, you can obtain composite anti-corrosive coating.

2. the method that utilization laser melting and coating technique according to claim 1 prepares composite anti-corrosive coating, it is characterised in that：Tool Body step is as follows：

（1）Prepare the Fe-Ni Alloy Powder of laser melting coating：The Fe-Ni Alloy Powder is made up of the raw material of following weight portion：Fe 49 parts, 15 parts of Ni, 15 parts of Cr, 4 parts of W, 5.5 parts of Mo, 2.5 parts of B, 5.5 parts of Si, Co1 parts and 2.5 parts of Al, raw material is chosen The metal dust of respective element；

（2）Laser melting coating：Using CO₂Laser carries out Laser Cladding Treatment, light beam under argon gas guard mode to blade base The mm of a diameter of Φ 3, laser power is 4kW, and sweep speed is 3 mm/s, and pressure is coaxially blown into laser beam for 0.45MPa argons Gas shielded, to prevent melt oxidation, then polishes flat the surface after laser melting coating with sand paper；

（3）Prepare modified 505 epoxy resin：Modified 505 epoxy coatings include first component and component B；

The first component is prepared from the following raw materials in parts by weight：40 parts of bisphenol A type epoxy resin, 5 parts of glass flake, pigment 15 Part, 5 parts of filler, 2 parts of auxiliary agent, 3 parts of diluent；

The component B is prepared from the following raw materials in parts by weight：It is 40 parts of polyamide curing agent, 15 parts of pigment, 5 parts of filler, anti-settling 0.8 part of agent, 50 parts of solvent；

The first component is 10 with the mass ratio of component B：1.1；

（4）The preparation of the first component of modified 505 epoxy resin：Bisphenol A type epoxy resin, auxiliary agent and diluent are put into dispersion machine In be stirred, mixing time is 25min, and mixing speed is 95r/min, is subsequently adding pigment and filler, stirs 20 min, is stirred Speed 115r/min is mixed, the mixture after stirring is transferred in sand mill and is ground, be ground to fineness≤60 μm, will ground Mixture afterwards is transferred in dispersion machine, is added glass flake and is stirred 30 min, is eventually adding diluent to gained first group Part viscosity be with apply -4 glasss of viscosity meters be 55s；

（5）The preparation of the component B of modified 505 epoxy resin：By in each raw material addition agitator tank of component B, stir, so Afterwards by the mixture strainer filtering for stirring, you can obtain component B；

（6）By step（4）The first component and step of preparation（5）The component B of preparation stirs respectively, and mixes in mass ratio Allotment uniformly obtains final product modified 505 epoxy resin, then deployed modified 505 epoxy resin are sprayed on into step（2）What is prepared swashs Light cladding coating surface, you can obtain composite anti-corrosive coating.

3. the method that utilization laser melting and coating technique according to claim 1 and 2 prepares composite anti-corrosive coating, its feature exists In：The glass flake is the glass flake being surface-treated by silane coupler, and granularity is 200-300 mesh.

4. the method that utilization laser melting and coating technique according to claim 1 and 2 prepares composite anti-corrosive coating, its feature exists In：The step（5）The pigment of component A and the pigment of B component are phosphorus zinc white, epoxy iron red shop, titanium dioxide, trbasic zinc phosphate, N330 One or more in carbon black.

5. the method that utilization laser melting and coating technique according to claim 1 and 2 prepares composite anti-corrosive coating, its feature exists In：The step（5）The filler of component A and the filler of B component are the mixture of 1000-1250 mesh talcum powder and calcium carbonate, Talcum powder is 4 with the mass ratio of calcium carbonate:3.

6. the method that utilization laser melting and coating technique according to claim 1 and 2 prepares composite anti-corrosive coating, its feature exists In：The auxiliary agent is pigment affinity groups polymer copolymerization body dispersant, 606 defoamers, anti-sagging agent and modified urea solution stream Become the mixture of agent, pigment affinity groups polymer copolymerization body dispersant：606 defoamers：Anti-sagging agent：Modified urea solution rheology The mass ratio of agent is 0.2:0.4:0.3:0.6.

7. the method that utilization laser melting and coating technique according to claim 1 and 2 prepares composite anti-corrosive coating, its feature exists In：The pigment affinity groups polymer copolymerization body dispersant be XH-9001 aqueous dispersions, SP-712 aqueous dispersions, One or more in DP490 aqueous dispersions；Anti-sagging agent is NUVIS BEZ 75, byk410, the one kind or several in AT720 Kind；Modified urea solution rheological agent is DeuRheo201P, one or more in DeuRheo 202P, DeuRheo 211F.

8. the method that utilization laser melting and coating technique according to claim 1 and 2 prepares composite anti-corrosive coating, its feature exists In：The diluent is made up of the raw material of following weight portion：5 parts of dimethylbenzene, 4 parts of n-butanol, 1 part of propylene glycol methyl ether acetate； The solvent is made up of the raw material of following weight portion：7 parts of dimethylbenzene, 3 parts of butanol；The anti-settling agent is polyamide wax anti-settling agent 6900。