KR960034463A - Electrolytic chromate bath for zinc-based plated steel sheet and method for producing electrolytic chromate-treated zinc-based plated steel sheet excellent in corrosion resistance, fingerprint resistance and chrome elution resistance - Google Patents

Electrolytic chromate bath for zinc-based plated steel sheet and method for producing electrolytic chromate-treated zinc-based plated steel sheet excellent in corrosion resistance, fingerprint resistance and chrome elution resistance Download PDF

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KR960034463A
KR960034463A KR1019950053750A KR19950053750A KR960034463A KR 960034463 A KR960034463 A KR 960034463A KR 1019950053750 A KR1019950053750 A KR 1019950053750A KR 19950053750 A KR19950053750 A KR 19950053750A KR 960034463 A KR960034463 A KR 960034463A
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electrolytic chromate
zinc
steel sheet
terms
resistance
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KR1019950053750A
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Korean (ko)
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KR100292366B1 (en
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겐지 다까오
노부오 도쓰까
노부유끼 모리또
세지 나까지마
지까꼬 가와사끼
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에모또 간지
가와사끼세이데쓰 가부시끼가이샤
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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D21/00—Processes for servicing or operating cells for electrolytic coating
    • C25D21/12—Process control or regulation
    • C25D21/14—Controlled addition of electrolyte components
    • 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
    • C25D11/38—Chromatising
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D15/00—Electrolytic or electrophoretic production of coatings containing embedded materials, e.g. particles, whiskers, wires

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Automation & Control Theory (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

본 발명은 아연계 도금강판용의 전해형 크로메이트욕 및 그것을 사용한 내식성, 내지문성 및 내크롬 용출성이 우수한 전해 크로메이트처리 아연계 도금강판의 제조방법을 개시하여, 이 아연계 도금강판용의 전해 크로메이트욕은 6가 크롬이온을 금속 Cr 환산으로 1~50g/1 , 3가 크롬이온을 금속 Cr 환산으로 0.1~2.0g/1, 2가 니켈이온 및 2가 코발트이온으로 이루어지는 군으로부터 선택되는 적어도 1종을 0.1~20g/1, 실리카졸을 그 고형분 환산으로 50~300g/1, 인산이온을 PO4 3-환산으로 0.05~1.0g/1, 황산이온을 1~50g/1함유하고, 또한 3가 크롬이온농도/전체 크롬이온 농도의 비가 0.1미만이며, 실리카졸 고형분농도/3가 크롬이온 농도의 비가 70초과이며, pH가 2.5~3.8이 범위일 것을 특징으로 하며, 또한 이를 사용한 전해 크로메이트처리 아연제 도금강판의 제조방법은 적어도 편면에 아연제 도금을 실시한 강판을 음극으로 하고, 상기 전해 크로메이트욕중에서, 욕은 30~70℃ 전류밀도 1~50A/dm2의 조건 하에서 전해 크로메이트 처리하는 것을 특징으로 한다.The present invention discloses an electrolytic chromate bath for zinc-based galvanized steel and a method for producing an electrolytic chromate treated zinc-based galvanized steel sheet having excellent corrosion resistance, fingerprint resistance and chromium elution resistance. At least one member selected from the group consisting of hexavalent chromium ions in the range of 1 to 50 g / 1 in terms of metal Cr, and 0.1 to 2.0 g / 1 in the form of trivalent chromium ions, divalent nickel ions and divalent cobalt ions; 0.1 to 20 g / 1, silica sol containing 50 to 300 g / 1 in terms of its solid content, 0.05 to 1.0 g / 1 in terms of PO 4 3- and 1 to 50 g / 1 for sulfate ions, and further trivalent chromium The ratio of the ion concentration / total chromium ion concentration is less than 0.1, the silica sol solid content concentration / trivalent chromium ion concentration ratio is more than 70, the pH is 2.5 ~ 3.8 range, characterized in that the electrolytic chromate zinc Less manufacturing method of plated steel sheet Among the steel sheets subjected to the zinc plating on one side used as a cathode, said electrolytic chromate bath, the bath is characterized in that the electrolytic chromate treatment under the conditions of a current density of 30 ~ 70 ℃ 1 ~ 50A / dm 2.

Description

아연계 도금강판용의 전해 크로메이트욕 및 그것을 사용한 내식성, 내지문성 및 내크롬 용출성이 우수한 전해 크로메이트처리 아연계 도금강판의 제조방법Electrolytic chromate bath for zinc-based plated steel sheet and method for producing electrolytic chromate-treated zinc-based plated steel sheet excellent in corrosion resistance, fingerprint resistance and chrome elution resistance

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims (3)

아연계 도금강판용의 전해 크로메이트욕에 있어서, a) 6가 크롬이온을 금속 Cr 환산으로 1~50g/1, b) 3가 크롬이온을 금속 Cr 환산으로 0.1~2.0g/1, c) 2가 니켈이온 및 2가 코발트이온으로 이루어지는 군으로부터 선택되는 적어도 1종을 0.1~20g/1, d)실리카졸을 그 고형분 환산으로 50~300g/1, e) 인산이온을 PO4 3-환산으로 0.05~1.0g/1, f) 황산이온을 1~50g/1함유하고, 또한 g) 3가 크롬이온농도/전체 크롬이온 농도의 비가 0.1미만이며, h) 실리카졸 고형분농도/3가 크롬이온 농도의 비가 70초과이며, i) pH가 2.5~3.8의 범위일 것을 특징으로 하는 아연계 도금강판용의 전해 크로메이트욕.In an electrolytic chromate bath for galvanized steel sheets, a) 1 to 50 g / 1 in terms of hexavalent chromium ions in terms of metal Cr, b) 0.1 to 2.0 g / 1 in terms of metal chromium, and c) divalent At least one selected from the group consisting of nickel ions and divalent cobalt ions is from 0.1 to 20 g / 1, d) from 50 to 300 g / 1 in terms of solids thereof, e) from 0.05 to PO 4 3-in terms of solids. ~ 1.0g / 1, f) containing 1-50g / 1 of sulfate ions, and g) the ratio of trivalent chromium ion concentration / total chromium ion concentration is less than 0.1, h) silica sol solid content concentration / trivalent chromium ion concentration The ratio is greater than 70, i) The electrolytic chromate bath for zinc-based galvanized steel sheet, characterized in that the pH ranges from 2.5 to 3.8. 제1항에 있어서, 이 실리카졸 고형분의 평균 입자경이 3nm 이상에서 100mn 미만인 것을 특징으로 하는 아연계 도금강판용의 전해 크로메이트욕.The electrolytic chromate bath for zinc-based galvanized steel sheet according to claim 1, wherein the silica sol solid content has an average particle diameter of less than 100 mn at 3 nm or more. 적어도 편면에 아연계 도금을 실시한 강판을 음극으로 하고, 상기 청구범위 제1항 또는 제2항에 기재된 전해 크로메이트욕중에서, 욕온 30~70℃, 전류밀도 1~50A/dm2의 조건하에서 전해 크로메이트 처리하는 것을 특징으로 하는 내식성, 내크롬 용출성 및 내지문성이 우수한 전해 크로메이트처리 아연계 도금강판 제조방법.Electrolytic chromate is carried out under the conditions of a bath temperature of 30-70 degreeC and a current density of 1-50 A / dm <2> in the electrolytic chromate bath of Claim 1 or 2 as a negative electrode at least the steel plate which zinc-plated on one side was used as a cathode. A process for producing an electrolytic chromate-plated zinc-based plated steel sheet excellent in corrosion resistance, chromium elution and anti-fingerprint, characterized in that the treatment. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950053750A 1995-03-29 1995-12-21 Electrolytic chromate bath for zinc-based plated steel sheet and method for producing electrolytic chromate-treated zinc-based plated steel sheet excellent in corrosion resistance, fingerprint resistance and chrome elution resistance KR100292366B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP9624395 1995-03-29
JP95-96243 1995-03-29
JP95-96244 1995-03-29
JP9624495 1995-03-29

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KR960034463A true KR960034463A (en) 1996-10-22
KR100292366B1 KR100292366B1 (en) 2001-06-01

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CN106133206B (en) * 2014-04-16 2018-09-11 杰富意钢铁株式会社 Electrolytic chromate handles the manufacturing method of steel plate
TWI551435B (en) 2014-05-05 2016-10-01 國立臺灣大學 Steel sheet and fabrication method thereof
CN107860803B (en) * 2017-10-25 2019-12-13 三峡大学 Solid phosphate ion selective electrode based on chromium wire, preparation method and application
CN112647101B (en) * 2020-08-31 2021-10-19 诺森威尔(天津)实业有限公司 Tire vertical side support, molding composition thereof, and method for repairing fastener

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