CN106903032A - A kind of corrosion-resistant, acid and alkali-resistance colored steel manufacture method - Google Patents
A kind of corrosion-resistant, acid and alkali-resistance colored steel manufacture method Download PDFInfo
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- CN106903032A CN106903032A CN201710123403.9A CN201710123403A CN106903032A CN 106903032 A CN106903032 A CN 106903032A CN 201710123403 A CN201710123403 A CN 201710123403A CN 106903032 A CN106903032 A CN 106903032A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 55
- 239000010959 steel Substances 0.000 title claims abstract description 55
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 238000005260 corrosion Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000007797 corrosion Effects 0.000 title claims abstract description 13
- 239000002253 acid Substances 0.000 title claims abstract description 12
- 239000003973 paint Substances 0.000 claims abstract description 65
- 238000000576 coating method Methods 0.000 claims abstract description 31
- 239000011248 coating agent Substances 0.000 claims abstract description 26
- 239000000758 substrate Substances 0.000 claims abstract description 26
- 230000037452 priming Effects 0.000 claims abstract description 24
- 238000010422 painting Methods 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000004140 cleaning Methods 0.000 claims abstract description 18
- 238000009877 rendering Methods 0.000 claims abstract description 18
- 239000004593 Epoxy Substances 0.000 claims abstract description 14
- 239000002245 particle Substances 0.000 claims abstract description 14
- 150000001845 chromium compounds Chemical class 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000002360 preparation method Methods 0.000 claims abstract description 12
- 238000005238 degreasing Methods 0.000 claims abstract description 11
- 239000000126 substance Substances 0.000 claims abstract description 11
- 229920002635 polyurethane Polymers 0.000 claims abstract description 7
- 239000004814 polyurethane Substances 0.000 claims abstract description 7
- 229920006305 unsaturated polyester Polymers 0.000 claims abstract description 7
- 239000002966 varnish Substances 0.000 claims abstract description 7
- 229910001335 Galvanized steel Inorganic materials 0.000 claims abstract description 6
- 239000008397 galvanized steel Substances 0.000 claims abstract description 6
- 229910018137 Al-Zn Inorganic materials 0.000 claims abstract description 5
- 229910018573 Al—Zn Inorganic materials 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims description 31
- 239000000975 dye Substances 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 12
- 238000005516 engineering process Methods 0.000 claims description 12
- 239000000049 pigment Substances 0.000 claims description 11
- 239000002994 raw material Substances 0.000 claims description 10
- 238000004513 sizing Methods 0.000 claims description 10
- 229910001297 Zn alloy Inorganic materials 0.000 claims description 9
- FJMNNXLGOUYVHO-UHFFFAOYSA-N aluminum zinc Chemical compound [Al].[Zn] FJMNNXLGOUYVHO-UHFFFAOYSA-N 0.000 claims description 9
- 238000010791 quenching Methods 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 238000005246 galvanizing Methods 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 4
- 235000011194 food seasoning agent Nutrition 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 4
- 238000000643 oven drying Methods 0.000 claims description 4
- 238000002203 pretreatment Methods 0.000 claims description 4
- 238000011010 flushing procedure Methods 0.000 claims description 2
- 230000008054 signal transmission Effects 0.000 claims description 2
- 238000007711 solidification Methods 0.000 claims description 2
- 230000008023 solidification Effects 0.000 claims description 2
- 240000007594 Oryza sativa Species 0.000 claims 1
- 235000007164 Oryza sativa Nutrition 0.000 claims 1
- 235000009566 rice Nutrition 0.000 claims 1
- 239000002585 base Substances 0.000 abstract description 15
- 239000002105 nanoparticle Substances 0.000 abstract description 7
- 239000012943 hotmelt Substances 0.000 abstract description 4
- 239000003513 alkali Substances 0.000 abstract description 3
- 238000000227 grinding Methods 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 239000002904 solvent Substances 0.000 abstract description 2
- 239000011800 void material Substances 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 238000000889 atomisation Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 238000002161 passivation Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 238000005269 aluminizing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011437 continuous method Methods 0.000 description 1
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- NVKTUNLPFJHLCG-UHFFFAOYSA-N strontium chromate Chemical compound [Sr+2].[O-][Cr]([O-])(=O)=O NVKTUNLPFJHLCG-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
- B05D5/065—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects having colour interferences or colour shifts or opalescent looking, flip-flop, two tones
- B05D5/066—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects having colour interferences or colour shifts or opalescent looking, flip-flop, two tones achieved by multilayers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
- B05D3/102—Pretreatment of metallic substrates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/54—No clear coat specified
- B05D7/546—No clear coat specified each layer being cured, at least partially, separately
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2202/00—Metallic substrate
- B05D2202/10—Metallic substrate based on Fe
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2451/00—Type of carrier, type of coating (Multilayers)
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2503/00—Polyurethanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2504/00—Epoxy polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2508/00—Polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2601/00—Inorganic fillers
- B05D2601/20—Inorganic fillers used for non-pigmentation effect
- B05D2601/24—Titanium dioxide, e.g. rutile
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Laminated Bodies (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
A kind of corrosion-resistant, acid and alkali-resistance colored steel manufacture method, comprises the following steps：Step 1, pretreatment：With galvanized steel plain sheet or Al-Zn coated steel as substrate, surface preparation is cleaning by degreasing；Step 2, rendering：Chemical painting machine is entered into by the strip after pretreatment, one layer of water base chromium compounds is applied in belt steel surface, entering back into roll coater carries out rendering：Front priming paint anti-corrosion polyurethane primer high, back side priming paint anti-corrosion epoxy primer high；Step 3, essence are applied：Entering smart painting machine by slewing rollers by the strip after rendering carries out smart painting：Front finish paint anti-corrosion unsaturated polyester varnish high, back side finish paint anti-corrosion epoxy back of the body paint high, the inventive method relies on the nano particle of mass production in positive and negative finishing coat, nm regime is reached by grinding technics, ultra-fine nano particle effectively eliminates the void defects that big particle diameter aggregate brings, hot melt self-repair material eliminates solvent duct in conventional coating, forms superpower sealing ability and acidproof alkali ability, extends the service life of colored steel.
Description
Technical field
The invention belongs to colored steel manufacturing technology field, and in particular to be a kind of corrosion-resistant, acid and alkali-resistance colored steel manufacture method.
Background technology
Also known as color steel, Coil Coating Products in colored steel, industry.Color painted steel strip is with cold-rolled steel sheet and galvanized steel plain sheet as base
Plate, by surface preparation (degreasing, cleaning, chemical conversion treatment), applies in continuous method and coats (rolling method), by drying
Product that is roasting and cooling down and be made.Coated steel sheet has lightweight, Corrosion Protection attractive in appearance and good, can directly process again, it
A kind of new raw material are provided to construction industry, shipbuilding industry, vehicle manufacture industry, household electric appliances, electric utility etc., is served with steel
Dai Mu, efficiently construction, energy saving, prevent pollute etc. good result.
Current production technology is：The two common two baking type continuous multicolor coating main production processes of unit technological process of painting
For：--- --- --- --- --- --- --- --- -- alkali cleaning degreasing --- --- is clear for-uncoiling kink for tension machine for pressure roller for-sewing machine for uncoiler
Wash ----drying --- ----passivation --- ----drying --- --- rendering --- ----rendering drying --- --- finish paint essence painting --- ---
--- --- wind cooling temperature lowering --- --- winding kink --- -- winder --- -- (last volume packaging and warehousing) that finish paint is dried.
Existing technology in steel plate baking process, when diluent outwards volatilizees, can form hole in lacquering process is produced
Gap, coating declines to the sealing ability of steel plate, and steel plate is out of doors during use, corrosive gas or liquid inlet handhole
Gap, reaches steel plate, corrodes steel plate, and thus, colored steel hydraulic performance decline is even damaged.
The content of the invention
One kind of the invention is corrosion-resistant, acid and alkali-resistance colored steel manufacture method, for colored steel front and back coating, by coating
Middle nano-particle and hot melt self-repair material-polyethylene, nano-particle are formation in grinding coatings manufacturing process；Hot melt is reviewed one's lessons by oneself
Multiple material is moderately heated and closes paint film breakage when running into hot environment during colored steel use, so that paint film possesses holding
Continuous protective capability, in a corrosive environment, colored steel prepared by the inventive method can apply more than 30 years.Precoated substrate passes through
After surface clean and Passivation Treatment, into roller coat unit, technique is applied using three rollers are inverse；Coating is coated to band using roll coating model
Steel surface, after toasted solidification, obtains colored steel finished product, possesses corrosion-resistant, acid-proof alkaline.
A kind of corrosion-resistant, acid and alkali-resistance colored steel manufacture method, comprises the following specific steps that：
Step 1, pretreatment：With galvanized steel plain sheet or Al-Zn coated steel as substrate, strip through uncoiler feeding, by tensioning
Strip feeding pre-treatment section is carried out surface preparation to belt steel surface by machine, improves plate face adhesive force, and surface preparation is degreasing
Cleaning；
Step 2, rendering：Chemical painting machine is entered into by the strip after pretreatment, one layer of water base chromium is applied in belt steel surface
Compound, the cold wind drier after stove is arranged in by strip after going out chemical painting machine into drying oven drying, 70-90 DEG C of drying temperature
Less than 40 DEG C are cooled to, rendering is carried out into roll coater：
Front priming paint uses anti-corrosion polyurethane primer high, the production technology and prior art phase of described polyurethane primer
Together, when raw material prepares, after paint material is ground, particle diameter is made less than 500 nano dyes accounting 50% in priming paint pigment,
Particle diameter is less than 1000 nano dye accountings 80%, priming paint film thickness >=6 micron；
Back side priming paint uses anti-corrosion epoxy primer high, and the production technology of described epoxy primer is same as the prior art,
When raw material prepares, after paint material is ground, particle diameter is set to be less than 500 nano dyes accounting 50%, particle diameter in priming paint pigment
Less than 1000 nano dye accountings 80%, priming paint film thickness >=6 micron；
Into the drying of hanging type curing oven after the completion of front, the coating of back side priming paint, 210-230 DEG C of drying temperature, strip goes out
Enter watch-quench tank after curing oven, then dried by cold wind；
Step 3, essence are applied：Entering smart painting machine by slewing rollers by the strip after rendering carries out smart painting：
Front finish paint uses anti-corrosion unsaturated polyester varnish high, the production technology and prior art of described unsaturated polyester varnish
It is identical, when raw material prepares, after paint material is ground, particle diameter is reached less than 500 nano dyes accounting in priming paint pigment
60%, particle diameter is less than 1000 nano dye accountings 90%, finish paint film thickness >=20 micron；
Back side finish paint is using anti-corrosion epoxy back of the body paint high, and the production technology of described epoxy back of the body paint is same as the prior art,
When raw material prepares, after paint material is ground, make particle diameter less than 500 nano dyes in priming paint pigment accounting up to 50%, grain
Footpath is less than 1000 nano dye accountings 80%, back of the body paint film thickness >=6 micron；
Front, back side finish paint enter the curing oven of essence painting by paint drying after being painted with, drying temperature is 215-235 DEG C, is gone out
Strip after stove enters back into watch-quench tank cooling, then dries；
Step 4, last strip are cut by inspection desk, outlet, and strip is cut into the rouleau of requirement, then will be into by coil stripping car
Product volume is transported on outlet strip coil base.
Further, described cleaning by degreasing temperature control is in 55 ± 10 DEG C, cleaning fluid pH value control range 6-8, to protect
The thoroughly cleaning to belt steel surface impurity is demonstrate,proved, after clear water is rinsed, through hot-air seasoning.
Further, described zinc-plated substrate is hot dip galvanizing substrate, zinc-plated amount Z：≥100g/m2, described zinc-base of aluminizing
Plate, aluminum-zinc alloy amount Az：≥80g/m2,。
Further, described water base chromium compounds is inorganic chromium compounds, and the water base chromium compounds of belt steel surface contains after coating drying
Amount 20-35mg/ ㎡ (one side)..
Further, described each layer film thickness be by pressure sensor control, coating machine with support roller, applicator roll,
Sizing roller, metering roll, and coating pan, sizing roller are drive roll, and support roller is driven voller, on sizing roller and support roller respectively
The pressure of pressure sensor, pressure sensor sensing sizing roller and support roller is provided with, by pressure signal transmission to master controller,
Master controller feedback signal makes the gap between sizing roller and support roller be adjusted by fine pitch leading screw, the film thickness model of control
Enclose is ± 1 micron.
Beneficial effects of the present invention：
The product of the inventive method production, relies on the nano particle of mass production in the coating of positive and negative, there is nanometer in primers
Titanium dioxide, nanometer strontium chromate rust resisting pigment has nanometer titanium dioxide, nanometer phthalocyanine blue, nanometer DPP reds etc. in finish paint, pass through
Grinding technics reaches nm regime, and nano particle distribution proportion is tested by laser particle analyzer；All raw materials are first in above-mentioned coating
All it is first unresponsive with the general chemical inertia such as soda acid, ultra-fine nano particle effectively eliminates big particle diameter aggregate and brings
Void defects, hot melt self-repair material-polyethylene eliminates solvent duct in conventional coating well, so that comprehensive form super
Strong sealing ability and acidproof alkali ability, extend the service life of colored steel.
Specific embodiment
Embodiment 1
Step 1, pretreatment：With galvanized steel plain sheet or Al-Zn coated steel as substrate, strip through uncoiler feeding, by tensioning
Strip feeding pre-treatment section is carried out surface preparation to belt steel surface by machine, improves plate face adhesive force, and surface preparation is degreasing
Cleaning；Described zinc-plated substrate is hot dip galvanizing substrate, zinc-plated amount Z：≥100g/m2, described aluminum-zinc alloy substrate, aluminum-zinc alloy amount
Az：≥80g/m2,；The purpose of pretreatment is removal substrate surface foreign matter, and subsequent processing is entered after substrate surface cleaning；Degreasing is clear
Temperature control is washed at 65 DEG C, cleaning fluid pH value control range 6.5-7.5, to ensure the thoroughly cleaning to belt steel surface impurity, clearly
After water is rinsed, through hot-air seasoning；
Step 2, rendering：Coating processes are entered by the way of rolling method continuously coating by the strip after pretreatment
To chemical painting machine, one layer of water base chromium compounds is applied in belt steel surface, applying water base chromium compounds can improve the adhesive force of coating and substrate,
The water base chromium compounds content 30-35mg/ ㎡ (one side) of belt steel surface after coating drying.Dried into drying oven after going out chemical painting machine,
70-80 DEG C of drying temperature, is arranged in the cold wind drier after stove and strip is cooled into less than 40 DEG C, is carried out just into roll coater
Apply, front priming paint uses polyurethane primer, 7 microns of film thickness；Back side priming paint uses epoxy primer, 7 microns of film thickness, then
By the strip feeding hanging type curing oven drying after rendering, 210-220 DEG C of drying temperature, baking time 30-35 seconds；Strip goes out solid
Enter watch-quench tank after changing stove, atomization cooling is carried out first, then carry out water quick cooling, then dried by cold wind, cold wind is by strip table
Face moisture drying, into subsequent processing；
Step 3, essence are applied：Coating processes pass through to turn to by the way of rolling method continuously coating by the strip after rendering
Roller enters smart painting machine carries out smart painting, and essence applies front finish paint material therefor and uses unsaturated polyester varnish, 20 microns of film thickness；The back side
Finish paint carries on the back paint, 6 microns of film thickness using epoxy；By paint drying in finish oven, drying temperature is 220-230 DEG C,
Baking time 40-45 seconds；The strip gone out after curing oven enters back into watch-quench tank cooling, and atomization cooling is carried out first, then enters water-filling
Chilling, then dried up belt steel surface moisture by cold wind, coating layer thickness controlled using pressure sensor, thickness control scope for ±
1 micron；
Step 4, last strip are cut by inspection desk, outlet, and strip is cut into the rouleau of requirement, then will be into by coil stripping car
Product volume is transported on outlet strip coil base.
Embodiment 2
Step 1, pretreatment：With galvanized steel plain sheet or Al-Zn coated steel as substrate, strip through uncoiler feeding, by tensioning
Strip feeding pre-treatment section is carried out surface preparation to belt steel surface by machine, improves plate face adhesive force, and surface preparation is degreasing
Cleaning；Described zinc-plated substrate is hot dip galvanizing substrate, zinc-plated amount Z：≥100g/m2, described aluminum-zinc alloy substrate, aluminum-zinc alloy amount
Az：≥80g/m2,；The purpose of pretreatment is removal substrate surface foreign matter, and subsequent processing is entered after substrate surface cleaning；Degreasing is clear
Temperature control is washed in 50 DEG C, cleaning fluid pH value control range 7.5-8, to ensure the thoroughly cleaning to belt steel surface impurity, clear water
After flushing, through hot-air seasoning；
Step 2, rendering：Coating processes are entered by the way of rolling method continuously coating by the strip after pretreatment
To chemical painting machine, one layer of water base chromium compounds is applied in belt steel surface, applying water base chromium compounds can improve the adhesive force of coating and substrate,
The water base chromium compounds content 20-30mg/ ㎡ (one side) of belt steel surface after coating drying.
The cold wind drier after stove is arranged in by band into drying oven drying, 80-85 DEG C of drying temperature after going out chemical painting machine
Steel is cooled to less than 40 DEG C, and rendering is carried out into roll coater, and front priming paint uses polyurethane primer, 6 microns of film thickness；The back side
Priming paint uses epoxy primer, 6 microns of film thickness, then the strip feeding hanging type curing oven after rendering is dried, drying temperature
220-230 DEG C, baking time 30-35 seconds；Strip enters watch-quench tank after going out curing oven, and atomization cooling is carried out first, then carries out
Water quick cooling, then dried by cold wind, cold wind dries up belt steel surface moisture, into subsequent processing；
Step 3, essence are applied：Coating processes pass through to turn to by the way of rolling method continuously coating by the strip after rendering
Roller enters smart painting machine carries out smart painting, and essence applies front finish paint material therefor and uses unsaturated polyester varnish, 21 microns of film thickness；The back side
Finish paint carries on the back paint, 7 microns of film thickness using epoxy；By paint drying in finish oven, drying temperature is 215-225 DEG C,
Baking time 45-50 seconds；The strip gone out after curing oven enters back into watch-quench tank cooling, and atomization cooling is carried out first, then enters water-filling
Chilling, then dried up belt steel surface moisture by cold wind, coating layer thickness controlled using pressure sensor, thickness control scope for ±
1 micron；
Step 4, last strip are cut by inspection desk, outlet, and strip is cut into the rouleau of requirement, then will be into by coil stripping car
Product volume is transported on outlet strip coil base.
Embodiment 1 is tested with the products obtained therefrom of embodiment 2, it is as a result as shown in the table：
Product service life is tested：
Claims (5)
1. a kind of corrosion-resistant, acid and alkali-resistance colored steel manufacture method, it is characterised in that comprise the following specific steps that：
Step 1, pretreatment：With galvanized steel plain sheet or Al-Zn coated steel as substrate, strip, will by tensioning device through uncoiler feeding
Strip feeding pre-treatment section, surface preparation is carried out to belt steel surface, improves plate face adhesive force, and surface preparation is that degreasing is clear
Wash；Described zinc-plated substrate is hot dip galvanizing substrate, zinc-plated amount Z：≥100g/m2, described aluminum-zinc alloy substrate, aluminum-zinc alloy amount Az：
≥80g/m2,；
Step 2, rendering：Chemical painting machine is entered into by the strip after pretreatment, one layer of water base chromium compounds is applied in belt steel surface,
It is arranged in the cold wind drier after stove and is cooled to strip into drying oven drying, 70-90 DEG C of drying temperature after goes out chemical painting machine
Less than 40 DEG C, rendering is carried out into roll coater：
Front priming paint uses anti-corrosion polyurethane primer high, and the production technology of described polyurethane primer is same as the prior art,
When raw material prepares, after paint material is ground, particle diameter is set to be less than 500 nano dyes accounting 50%, 1000 in priming paint pigment
Nano dye accounting 80%, priming paint film thickness >=6 micron；
Back side priming paint uses anti-corrosion epoxy primer high, and the production technology of described epoxy primer is same as the prior art, in raw material
During preparation, after paint material is ground, make particle diameter less than 500 nano dyes accounting 50% in priming paint pigment, 1000 nanometers
Pigment accounting 80%, priming paint film thickness >=6 micron；
Go out solidification into the drying of hanging type curing oven, 210-230 DEG C of drying temperature, strip after the completion of front, the coating of back side priming paint
Enter watch-quench tank after stove, then dried by cold wind；
Step 3, essence are applied：Entering smart painting machine by slewing rollers by the strip after rendering carries out smart painting：
Front finish paint uses anti-corrosion unsaturated polyester varnish high, the production technology and prior art phase of described unsaturated polyester varnish
Together, when raw material prepares, after paint material is ground, particle diameter is made to be reached less than 500 nano dyes accounting in priming paint pigment
60%, 1000 nano dye accountings 90%, finish paint film thickness >=20 micron；
, using anti-corrosion epoxy back of the body paint high, the production technology of described epoxy back of the body paint is same as the prior art, in raw material for back side finish paint
During preparation, after paint material is ground, particle diameter is set to be received up to 50%, 1000 less than 500 nano dyes accounting in priming paint pigment
Rice pigment accounting 80%, back of the body paint film thickness >=6 micron；
Front, back side finish paint enter the curing oven of essence painting by paint drying after being painted with, drying temperature is 215-235 DEG C, after coming out of the stove
Strip enter back into watch-quench tank cooling, then dry；
Step 4, last strip are cut by inspection desk, outlet, strip are cut into the rouleau of requirement, then rolled up finished product by coil stripping car
Transport on outlet strip coil base.
2. corrosion-resistant, acid and alkali-resistance colored steel manufacture method according to claim 1, it is characterised in that described cleaning by degreasing
Temperature control is in 55 ± 10 DEG C, cleaning fluid pH value control range 6-8, to ensure the thoroughly cleaning to belt steel surface impurity, clear water
After flushing, through hot-air seasoning.
3. corrosion-resistant, acid and alkali-resistance colored steel manufacture method according to claim 1, it is characterised in that described zinc-plated substrate
It is hot dip galvanizing substrate, zinc-plated amount Z：≥100g/m2, described aluminum-zinc alloy substrate, aluminum-zinc alloy amount Az：≥80g/m2,。
4. corrosion-resistant, acid and alkali-resistance colored steel manufacture method according to claim 1, it is characterised in that described water base chromaking
Thing coats the water base chromium compounds content 20-35mg/ ㎡ of strip monoplanar surface after drying to choose inorganic chromium compounds.
5. corrosion-resistant, acid and alkali-resistance colored steel manufacture method according to claim 1, it is characterised in that described each layer paint film
By pressure sensor control, coating machine carries support roller, applicator roll, sizing roller, metering roll, and coating pan, sizing roller to thickness
It is drive roll, support roller is driven voller, pressure sensor, pressure sensor sensing is respectively arranged with sizing roller and support roller
The pressure of sizing roller and support roller, by pressure signal transmission to master controller, master controller feedback signal makes sizing roller with support
Gap between roller is adjusted by fine pitch leading screw, and the film thickness scope for controlling is ± 1 micron.
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