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WO2000061835A1 - Procede de production d'une tole d'acier traitee en surface, tole d'acier traitee en surface et tole d'acier traitee en surface revetue d'une resine comprenant une tole d'acier traitee en surface et une resine organique revetant la tole d'acier - Google Patents

Procede de production d'une tole d'acier traitee en surface, tole d'acier traitee en surface et tole d'acier traitee en surface revetue d'une resine comprenant une tole d'acier traitee en surface et une resine organique revetant la tole d'acier Download PDF

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Publication number
WO2000061835A1
WO2000061835A1 PCT/JP2000/002356 JP0002356W WO0061835A1 WO 2000061835 A1 WO2000061835 A1 WO 2000061835A1 JP 0002356 W JP0002356 W JP 0002356W WO 0061835 A1 WO0061835 A1 WO 0061835A1
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WO
WIPO (PCT)
Prior art keywords
steel sheet
treated steel
resin
treated
compound
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2000/002356
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English (en)
Japanese (ja)
Inventor
Masao Komai
Masanori Yoshikawa
Jun-Ichi Fujimoto
Takao Nishimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyo Kohan Co Ltd
Original Assignee
Toyo Kohan Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyo Kohan Co Ltd filed Critical Toyo Kohan Co Ltd
Priority to JP2000610880A priority Critical patent/JP4312391B2/ja
Priority to AU36770/00A priority patent/AU3677000A/en
Publication of WO2000061835A1 publication Critical patent/WO2000061835A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/36—Phosphatising
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
    • C23C22/08—Orthophosphates
    • C23C22/22—Orthophosphates containing alkaline earth metal cations
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/40—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates
    • C23C22/42—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates containing also phosphates

Definitions

  • the present invention relates to a method for producing a surface-treated steel sheet in which a zinc-coated steel sheet or the like is coated with a protective film having excellent barrier properties and film adhesion, a surface-treated steel sheet, and the surface-treated steel sheet coated with an organic resin. And a resin-coated surface-treated steel sheet.
  • phosphate-chromic acid has been used to improve the protection against corrosion and the adhesion to coating films and resin layers formed thereon.
  • the surface is treated in a solution containing salt to form a protective is film such as a phosphate film or a chromate film.
  • a protective is film such as a phosphate film or a chromate film.
  • steel sheets on which a phosphate film has been formed have poor corrosion resistance, and are likely to produce ⁇ when not coated with a film or an organic resin. Also, when coated with a coating film or an organic resin, the adhesion, especially during processing, is insufficient.
  • a chromate film is formed on a steel sheet using a method such as immersion treatment, coating treatment, or electrolytic treatment that does not involve electrolysis, and is not coated with a coating film or organic resin rather than a phosphate film.
  • the steel sheet with the chromate film is excellent in corrosion resistance and processing adhesion. Although it is widely used in many fields, it has the potential to adversely affect the human body and the environment.Therefore, a treatment film is required to replace the chromate film, which has excellent corrosion resistance and processing adhesion. ing.
  • Japanese Patent Publication No. 62-30265 discloses phosphoric acid, zinc oxide as an acid-soluble zinc compound, heavy metal promoter and / or crystal refiner, and aminotris (phosphonate corrosion inhibitor). It discloses a composition comprising methylene monophosphonic acid) and water, and the coating of metal parts with the composition, and describes that corrosion resistance and paint adhesion are improved.
  • Examples include titanium, titanium, zirconium, tungsten, and molybdenum compounds, and specifically, use of ammonium molybdate or ammonium metavanadate.
  • nickel, cobalt, An acid-soluble salt of magnesium or calcium is mentioned. Specifically, use of nickel nitrate, calcium nitrate, or cobalt nitrate is described. However, it is described in the above-mentioned Japanese Patent Publication No. Sho 62-302565.
  • the present invention provides a method for producing a surface-treated steel sheet having excellent corrosion resistance and excellent processing adhesion of an organic resin film, which is an alternative to the surface-treated steel sheet subjected to a chromate treatment, a surface-treated steel sheet, and an organic resin for the surface-treated steel sheet. It is an object of the present invention to provide a resin-coated surface-treated steel sheet coated. Disclosure of the invention
  • the method for producing a surface-treated steel sheet according to the present invention includes immersing or electrolytically immersing the steel sheet in an aqueous solution containing at least one of oxysulfates of Mo, Ti, V, and Zr, a P compound, and a Zn compound. Processing.
  • the method for producing a surface-treated steel sheet according to the present invention comprises the steps of: preparing a steel sheet in an aqueous solution containing at least one of oxysulfates of Mo, Ti, V, and Zr, a P compound, a Zn compound, and a phosphonate. Characterized by immersion or electrolytic treatment
  • the method for producing a surface-treated steel sheet of the present invention includes one or more of oxysulfates of Mo, Ti, V, and Zr, a P compound, a Zn compound, and one or more of sulfates of Mg and A1.
  • the steel sheet is immersed or electrolytically treated in an aqueous solution having ⁇ .
  • the method for producing a surface-treated steel sheet of the present invention comprises the steps of: at least one of oxysulfates of Mo, Ti, V, and Zr; a P compound; a Zn compound; and at least one of sulfates of Mg and A1;
  • the steel sheet is subjected to immersion treatment or electrolytic treatment in an aqueous solution containing sulphonate.
  • the oxysulfate is molybdenum oxysulfate or vanadyl sulfate.
  • the P compound is composed of at least one of phosphoric acid, ammonium biphosphate, sodium biphosphate, calcium biphosphate, magnesium biphosphate, and aluminum biphosphate.
  • the phosphonate is preferably aminotri (methylene monophosphonic acid).
  • the surface-treated steel sheet of the present invention is characterized in that a material containing at least one of Mo, Ti, V, and Zr, a substance containing P, and a substance containing Zn by using any one of the methods for producing a surface-treated steel sheet described above It is a surface-treated steel sheet obtained by coating a steel sheet with a protective film mainly composed of
  • a protective film containing at least one of Mg and A1 is coated on the steel sheet. It is desirable that the surface-treated steel sheet be composed of:
  • the steel sheet is a Zn-plated steel sheet or a steel sheet with an alloy containing Zn.
  • the steel plate is a steel plate plated by electrolytic treatment.
  • the alloy-plated steel sheet containing Zn is a Zn-Co_Mo-plated steel sheet.
  • the resin-coated surface-treated steel sheet of the present invention is a resin-coated surface-treated steel sheet obtained by coating any one of the above-mentioned surface-treated steel sheets with an organic resin.
  • the organic resin is desirably any one of a polyester resin, a urethane resin, an acrylic resin, a polyolefin resin, a polycarbonate resin, a polyamide resin, and a polyvinyl chloride resin.
  • the organic resin contains at least one of colloidal silica, polytetrafluoroethylene, polyethylene wax, a silane coupling agent, and a chromium-free antioxidant.
  • oxysulfates of Mo, Ti, V, and Zr, a P compound, and a Zn compound are used as main components for forming a film.
  • a surface treatment bath to which at least one of the sulfates of Mg and A1 and / or phosphonate is positively added is used.
  • the oxysulfate is characterized by being molybdenum oxysulfate or vanadyl sulphate
  • the P compound is phosphoric acid, ammonium biphosphate, sodium biphosphate, calcium biphosphate, magnesium biphosphate , Characterized by comprising at least one of aluminum biphosphate.
  • At least one of Mo, Ti, V, and Zr as a metal replacing Cr is contained in the treatment solution together with the P compound and the Zn compound in the form of oxysulfate, and the treatment bath is used.
  • the steel sheet is a Zn-plated steel sheet or a steel sheet with a Zn-based alloy
  • P and P are combined with one or more of Mo, Ti, V, and Zr in association with Zn and alloy elements in the plating film.
  • Zn is mainly a component of the skeleton of the film, and it is considered that this film has excellent protection properties.
  • high valence states of Mo, Ti, V, and Zr are preferred in these films. It is considered to be oxidized to promote the formation of oxide film by oxidizing other substances and to be reduced to lower valence state. This reaction is considered to be similar to the oxidizing function of chromate ions, and is considered to exhibit excellent protection because the film has self-healing properties.
  • the treatment bath of the present invention comprises molybdenum oxysulfate, titanyl sulfate, vanadyl sulfate, zirconyl sulfate, and at least one of the oxysulfates of Mo, Ti, V, and Zr, and phosphoric acid and ammonium biphosphate. It consists of an aqueous solution containing P compounds such as ammonium dihydrogen phosphate, sodium biphosphate (sodium dihydrogen phosphate), and Zn compounds such as zinc oxide, and sulfuric acid that improves heat resistance.
  • P compounds such as ammonium dihydrogen phosphate, sodium biphosphate (sodium dihydrogen phosphate), and Zn compounds such as zinc oxide, and sulfuric acid that improves heat resistance.
  • sulfate salts of Mg or A1 such as magnesium and aluminum sulfate, and / or a phosphonate salt such as aminotri (methylene monophosphonic acid) may be added.
  • salts such as sodium sulfate and ammonium sulfate may be added.
  • the total content of molybdenum oxysulfate, titanyl sulfate, vanadyl sulfate, zirconyl sulfate, etc. is 3 to 150 gZl, preferably 5 to 50 gZl. Less than 50 gZ 1
  • any of the above metal oxysulfates can be applied to the present invention.
  • molybdenum oxysulfate and vanadyl sulfate are used, a stable treatment bath can be obtained, which is preferable.
  • the content of the compound is 3 to 150 gZl, preferably 5 to 50 gZl. If it is less than 32 3gZl, the amount of film formed is small and good film properties cannot be obtained. If it exceeds 150 g / 1, the processing adhesion of the film will decrease. In addition, it adheres to the steel sheet during processing The amount taken out increases and it is not economical.
  • the P compound at least one kind of compounds such as orthophosphoric acid, condensed phosphoric acid, phosphorous acid, hypophosphorous acid, and other P-containing oxyacids and oxyacid salts can be applied.
  • compounds such as orthophosphoric acid, condensed phosphoric acid, phosphorous acid, hypophosphorous acid, and other P-containing oxyacids and oxyacid salts
  • ammonium biphosphate, ammonium biphosphate, sodium biphosphate, calcium biphosphate, magnesium biphosphate, or aluminum biphosphate, which is a biphosphate compound is preferred because a stable treatment bath can be obtained.
  • the content of the Zn compound is 1 to 101, preferably 2 to 8 g / 1. If it is less than 1 g, the amount of film formed is small and good whiteness resistance cannot be obtained. If it exceeds 10 g / 1, the processing adhesion of the film will decrease. Furthermore, it adheres to the steel plate during processing and
  • the above-mentioned Zn compound may be any as long as it is soluble in an acid. However, when zinc oxide is used, a stable treatment bath can be obtained, which is preferable.
  • a surface-treated steel sheet is prepared using a treatment bath containing one or more of the above-mentioned metal oxysulfates, a P compound, and a Zn compound.
  • the treatment bath further contains one or more Mg or A1 sulfates such as magnesium sulfate and aluminum sulfate, and phosphorus or phosphonate.
  • Mg or A1 sulfates such as magnesium sulfate and aluminum sulfate, and phosphorus or phosphonate.
  • the content of the sulfate of 20 A 1 is preferably 3 to 50 g Z 1 in total. If the content is less than 3 g Zl, no effect is obtained, and if the content exceeds 50 g Z1, a sufficient effect is obtained, and it is not necessary to contain more.
  • the total content of phosphonate is preferably 1 to 80 g / 1.
  • magnesium biphosphate or aluminum biphosphate containing Mg or A1 as the P compound when magnesium biphosphate or aluminum biphosphate containing Mg or A1 as the P compound is used, the same effect as when Mg or A1 sulfate is contained is obtained.
  • salts such as sodium sulfate and ammonium sulfate may be contained in an amount of 50 g / 1 or less.
  • the pH of the treatment bath is preferably 1 to 5, more preferably 2 to 4. If the pH is less than 1, a non-uniform film is formed, and if the pH exceeds 5, the treatment bath becomes unstable and the corrosion resistance of the film decreases with S.
  • the pH is adjusted by adding an alkali such as ammonia or caustic soda and an acid such as sulfuric acid or phosphoric acid.
  • the temperature of the treatment bath is preferably in the range of 20 to 50.
  • a treatment film is formed on the steel sheet.
  • both immersion treatment and electrolytic treatment are possible.
  • a treatment film having a sufficient thickness can be obtained in 1 to 60 seconds, preferably 2 to 10 seconds. Even if immersed for 60 seconds or more, the thickness of the film does not increase so much.
  • a thick film can be obtained in a short time, and either cathodic treatment or anodizing can be applied.
  • a current at a current density of 0.5 to 30 A / dm 2 , preferably 1 to 10 A Z dm 2 for 0.1 to 10 seconds. If it is less than 0.5 A / dm 2 , it takes too much time to grow the film, and a thick film cannot be obtained in a short time.If it exceeds 3 OA / dm 2 , burns occur and a uniform film can be obtained. Absent. If a current is applied for more than 10 seconds, the film becomes too thick, and when a resin film such as an organic resin film is coated on the treated film, the processing adhesion of the resin film decreases.
  • the steel sheet 20 examples include a hot-rolled steel sheet obtained by removing the scale formed on the surface by hot-rolling a normal aluminum-killed continuous forged steel, a cold-rolled steel sheet obtained by cold-rolling and annealing a hot-rolled steel sheet, It is possible to use a single-layer plated steel sheet made of any one of Sn, Ni, Co, Mo, and Zn, or a plated steel sheet that has been subjected to multi-layer plating or alloy plating made of two or more kinds.
  • the most versatile Zn-plated steel sheet is hot-dip Zn-plated steel sheet, hot-dip Zn alloyed steel sheet containing A ⁇ 1 or Mg, electric Zn-plated steel sheet, or Zn-one Ni, Zn-Fe, Zn-Co, etc.
  • the surface treatment of the present invention is performed as follows. That is, the hot-rolled steel sheet and the cold-rolled steel sheet are subjected to a pickling treatment and a degreasing treatment by a conventional method.
  • any one of the above-mentioned platings is applied to obtain a plated steel sheet.
  • the steel sheet or the plated steel sheet is immersed or electrolytically treated in the above-mentioned treatment bath under the above-mentioned conditions to form a surface treatment film.
  • the surface-treated steel sheet of the present invention can be obtained.
  • the resin-coated surface-treated steel sheet of the present invention is obtained by coating the surface-treated steel sheet prepared as described above with an organic resin.
  • organic resin any resin can be applied as long as it can coat the surface-treated steel sheet, but any of polyester resin, polyolefin resin, polyvinyl chloride resin, polycarbonate resin, urethane resin, and acrylic resin can be used. It is preferable to use Further, by including at least one of colloidal silica, polytetrafluoroethylene, polyethylene wax, a silane coupling agent, and a chromium-free antioxidant in the organic resin, lubricity, adhesion, and corrosion resistance are improved. It can be further improved.
  • polyester resin examples include polyethylene terephthalate, polybutylene terephthalate, a copolymerized polyester resin in which part of the polyhydric acid component and / or polyhydric alcohol component of these resins is replaced with another component, and butylene terephthalate monolithic resin.
  • polyester resins mainly composed of two units examples thereof include copolymerized polyester resins mainly composed of two units, and resins obtained by blending these polyester resins.
  • polyolefin resins examples include homopolymers such as polyethylene, polypropylene, polybutene, and polymethylpentene, ethylene / propylene copolymer, ethylene / propylene / gen copolymer, ethylene / vinyl acetate copolymer, and ethylene / propylene copolymer.
  • Copolymers such as ethyl acrylate copolymer and olefin polymer can be used.
  • a polyvinyl chloride resin containing 10 to 50 parts by weight of a plasticizer such as di- (2-ethylhexyl) phthalate, dibutyl phthalate, and octyl adipate. Is preferred.
  • polycarbonate resin bisphenol A-polycarbonate resin is preferable.
  • polyamide resin examples include 6-nylon, 6,6-nylon, 6,10-nylon, and 12-nylon.
  • urethane resin an aqueous resin that can be dissolved or dispersed in water is preferable to an organic solvent resin from the viewpoint of environmental protection.
  • a urethane resin modified with acryl, olefin, polyester, fluorine, or the like is used.
  • acrylic resin an aqueous resin is preferable.
  • an acrylic resin modified with urethane, olefin, polyester, fluorine or the like is suitable.
  • colloidal silica may be contained in the organic resin for the purpose of increasing the hardness of the entire resin layer, and improving scratch resistance, abrasion resistance, and corrosion resistance.
  • Lubricant powder such as a mixture may be contained.
  • the corrosion resistance is further improved.
  • providing an organic resin layer containing a silane coupling agent further improves corrosion resistance and adhesion.
  • Known methods for forming an organic resin on the surface-treated steel sheet of the present invention include lamination methods such as film lamination and extrusion lamination, powder coating methods, roll coating methods, spraying methods, and electrostatic coating methods. The method is applicable.
  • these resins may be formed into a stretched film or an unstretched film, and the resin film may be laminated on the surface-treated steel sheet of the present invention by a heat bonding method, or a polyester or acrylic resin. It may be bonded to the surface-treated steel sheet by using an adhesive such as a base, urethane, epoxy or melamine. Furthermore, heat and melt the resin, and directly onto the surface It may be extruded and laminated on a treated steel sheet.
  • a polymer and a plasticizer dissolved in a solvent and made into a sol such as a polyvinyl chloride resin, may be applied to a surface-treated steel sheet, and then heated to gel.
  • an aqueous resin that is more soluble or dispersible in water than an organic solvent-based resin is used, and the thickness of the organic resin layer may be relatively thin. Therefore, it is preferable to adopt a method in which the surface-treated steel sheet of the present invention is immersed in an aqueous solution in which a resin is dissolved, excess resin solution is removed using a squeezing roll or the like, and then dried. Drying method is hot air drying, gas oven, electric oven,
  • ⁇ Either means such as an induction heating furnace may be used, and the most advantageous method may be adopted from the viewpoint of the throughput and economy.
  • UV irradiation or electron beam irradiation may be used in combination.
  • the resin-coated surface-treated steel sheet of the present invention of the present invention can be obtained.
  • a 0.3 mm thick cold-rolled steel sheet is subjected to alkaline electrolytic degreasing and sulfuric acid pickling using a standard method, and then Zn plating, ⁇ —Co—Mo plating, or 00Zn—N under the following conditions.
  • An i-alloy plating was performed to prepare a zinc-plated steel sheet, a Zn_Co-Mo-plated steel sheet, or a Zn-Ni alloy-plated steel sheet.
  • the Zn-coated steel sheet, Zn-Co-Mo-plated steel sheet, or Zn-Ni alloy-plated steel sheet prepared as described above was treated with a surface treatment bath having the bath composition shown in Tables 1 to 4, Surface treatment was performed under the conditions to create a surface-treated steel sheet. 1
  • Treatment conditions Bath temperature ⁇ Treatment method Electron density Treatment time
  • the corrosion resistance of the surface-treated steel sheet prepared as described above was evaluated in the following manner.
  • comparative material 1 chromic acid anhydride: 25 1, sulfate: 0. 1 gZ 1 and electrolytic chromate treatment as a treatment bath, electric Z n-C o-Mo-plated steel sheet on the total chromium content and to 30MgZm 2 chromium
  • An electrical Zn—Co—Mo metal sheet having a hydrated oxide film formed thereon was used.
  • An electrical Zn—Co—Mo plated steel plate without chromate treatment was also used as Comparative Material 2. Evaluation of corrosion resistance of surface treated steel sheet
  • Rating 4 Slight whiteness that does not cause a practical problem is observed on the surface. Rating 3: Whiteness that causes a practical problem is observed on the surface.
  • Table 5 shows the iJD results. Sample No.Corrosion resistance classification Flat plate part
  • Comparative material 1 5 3 Comparative material Comparative material Comparative material 2 1 1 Comparative material
  • Comparative Material 4 was prepared by coating an organic resin on an electrical Zn—Co—Mo plated steel sheet (Comparative Material 2) without chromate treatment.
  • a conventional electrolytic chromate treatment was performed to form an electrical Zn—Co—Mo plated steel sheet with a chromium hydrated oxide film with a total chromium content of 3 OmgZm 2 formed on an electrolytic Zn—Co—Mo plated steel sheet (comparative material 1).
  • a comparative material 3 in which an organic resin was coated on was prepared.
  • the resin-coated surface-treated steel sheet was drawn into a cylindrical cup shape with a drawing ratio of 2.2, the film on the side of the cup was forcibly peeled off with adhesive tape, and the degree of film peeling was visually observed. evaluated.
  • Rating 4 Slight peeling is observed, which is not a problem in practical use. Rating 3: Peeling to a degree that is problematic in practical use is recognized.
  • Table 8 shows the results of the above characteristic evaluations.
  • the resin-coated surface-treated steel sheet in which the surface-treated steel sheet of the present invention was coated with an organic resin was coated with an organic resin on a Zn—Co—Mo plated steel sheet without electrolytic chromate.
  • the comparative material 3 in which the organic resin is coated on the conventional electrolytic chromate it has the same or better corrosion resistance and film adhesion than the comparative material 3 in which the organic resin is coated on the conventional electrolytic chromate.
  • the present invention is characterized by immersing or electrolytically treating a steel sheet in an aqueous solution containing at least one of oxysulfates of Mo, Ti, V, and Zr, a P compound, and a Zn compound.
  • the oxysulfate is molybdenum oxysulfate or vanadyl sulfate.
  • the present invention relates to a surface-treated steel sheet obtained by using the production method, and a resin-coated surface-treated steel sheet obtained by coating the surface-treated steel sheet with an organic resin.
  • the method for producing the surface-treated steel sheet of the present invention is excellent in the preservation of the working environment, and the surface-treated steel sheet obtained by using the production method has excellent corrosion resistance.
  • the treated steel sheet is excellent not only in corrosion resistance but also in film adhesion.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Electrochemistry (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Laminated Bodies (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

L'invention concerne un procédé de production d'une tôle d'acier traitée en surface consistant à soumettre la tôle d'acier à un traitement par immersion ou un traitement par électrolyse dans une solution aqueuse contenant un ou plusieurs des oxysulfates de Mo, Ti, V et Zr, un composé P et un composé Zn, ou, dans une solution aqueuse contenant également une quantité significative d'un ou de plusieurs des sulfates de Mg et Al et/ou un phosphonate en plus du reste. L'invention concerne également une tôle d'acier traitée en surface ainsi qu'une tôle d'acier traitée en surface revêtue d'une résine comprenant une tôle d'acier traitée en surface ainsi qu'une résine revêtant la tôle d'acier, laquelle est produire par revêtement de la tôle d'acier traitée en surface produite selon le procédé précité avec une résine organique. La tôle d'acier traitée en surface présente une résistance suffisante à la corrosion et une force d'adhésion suffisante avec une résine afin de remplacer une tôle d'acier traitée en surface ayant été soumise à un traitement au chromate.
PCT/JP2000/002356 1999-04-12 2000-04-11 Procede de production d'une tole d'acier traitee en surface, tole d'acier traitee en surface et tole d'acier traitee en surface revetue d'une resine comprenant une tole d'acier traitee en surface et une resine organique revetant la tole d'acier Ceased WO2000061835A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2000610880A JP4312391B2 (ja) 1999-04-12 2000-04-11 表面処理鋼板の製造方法、表面処理鋼板、および表面処理鋼板に有機樹脂を被覆してなる樹脂被覆表面処理鋼板
AU36770/00A AU3677000A (en) 1999-04-12 2000-04-11 Method for production of surface treated steel sheet, surface treated steel sheet, and surface treated steel sheet coated with resin comprising surface treated steel sheet and organic resin coating the steel sheet

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11/104592 1999-04-12
JP10459299 1999-04-12

Publications (1)

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WO2000061835A1 true WO2000061835A1 (fr) 2000-10-19

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PCT/JP2000/002356 Ceased WO2000061835A1 (fr) 1999-04-12 2000-04-11 Procede de production d'une tole d'acier traitee en surface, tole d'acier traitee en surface et tole d'acier traitee en surface revetue d'une resine comprenant une tole d'acier traitee en surface et une resine organique revetant la tole d'acier

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JP (2) JP4312391B2 (fr)
AU (1) AU3677000A (fr)
WO (1) WO2000061835A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
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JP2004076024A (ja) * 2002-08-09 2004-03-11 Nippon Paint Co Ltd アルミニウム系基材の処理方法及び製品
WO2005010235A1 (fr) * 2003-07-29 2005-02-03 Jfe Steel Corporation Tole d'acier traitee en surface et procede de production de celle-ci
JP2007284789A (ja) * 2006-03-24 2007-11-01 Nippon Steel Corp 製缶加工性に優れた容器用鋼板
WO2008029916A1 (fr) * 2006-09-08 2008-03-13 Nippon Steel Corporation Plaque d'acier pour contenant et son procédé de fabrication
US7531051B2 (en) 2001-06-15 2009-05-12 Nihon Parkerizing Co., Ltd. Treating solution for metal surface treatment and a method for surface treatment
JP2019188743A (ja) * 2018-04-27 2019-10-31 国立大学法人広島大学 修復性めっき基材

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KR101490564B1 (ko) * 2012-12-21 2015-02-05 주식회사 포스코 내식성이 우수한 열간 프레스 성형품 및 이의 제조방법
JP2018028115A (ja) * 2016-08-15 2018-02-22 国立大学法人広島大学 めっき基材の修復剤および修復方法ならびにめっき基材

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JP2002047576A (ja) * 2000-08-01 2002-02-15 Sumitomo Metal Ind Ltd 電磁鋼板の絶縁皮膜形成用処理液と処理方法
US7531051B2 (en) 2001-06-15 2009-05-12 Nihon Parkerizing Co., Ltd. Treating solution for metal surface treatment and a method for surface treatment
JP2004076024A (ja) * 2002-08-09 2004-03-11 Nippon Paint Co Ltd アルミニウム系基材の処理方法及び製品
WO2005010235A1 (fr) * 2003-07-29 2005-02-03 Jfe Steel Corporation Tole d'acier traitee en surface et procede de production de celle-ci
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JP2007284789A (ja) * 2006-03-24 2007-11-01 Nippon Steel Corp 製缶加工性に優れた容器用鋼板
WO2008029916A1 (fr) * 2006-09-08 2008-03-13 Nippon Steel Corporation Plaque d'acier pour contenant et son procédé de fabrication
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JP2019188743A (ja) * 2018-04-27 2019-10-31 国立大学法人広島大学 修復性めっき基材
JP7077121B2 (ja) 2018-04-27 2022-05-30 Ｎｏｆメタルコーティングス株式会社 修復性めっき基材

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