JPS6465272A - Highly corrosion-resistant chromate treatment for galvanized steel sheet - Google Patents

Highly corrosion-resistant chromate treatment for galvanized steel sheet

Info

Publication number
JPS6465272A
JPS6465272A JP22156587A JP22156587A JPS6465272A JP S6465272 A JPS6465272 A JP S6465272A JP 22156587 A JP22156587 A JP 22156587A JP 22156587 A JP22156587 A JP 22156587A JP S6465272 A JPS6465272 A JP S6465272A
Authority
JP
Japan
Prior art keywords
steel sheet
galvanized steel
aqueous solution
elution
chromic acid
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.)
Granted
Application number
JP22156587A
Other languages
Japanese (ja)
Other versions
JPH0637706B2 (en
Inventor
Masaru Suzuki
Takenori Deguchi
Hirobumi Fukatsu
Hiromi Masuhara
Junji Ikeda
Yasutaka Kawaguchi
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.)
Nippon Steel Nisshin Co Ltd
Original Assignee
Nisshin Steel 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 Nisshin Steel Co Ltd filed Critical Nisshin Steel Co Ltd
Priority to JP62221565A priority Critical patent/JPH0637706B2/en
Publication of JPS6465272A publication Critical patent/JPS6465272A/en
Publication of JPH0637706B2 publication Critical patent/JPH0637706B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • C23C22/73—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 characterised by the process
    • C23C22/74—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 characterised by the process for obtaining burned-in conversion coatings

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

PURPOSE:To form a highly corrosion-resistant chromate film hardly causing the elution of sexivalent Cr and the sticking of fingerprints, by applying an aqueous solution of chromic acid which contains SiO2 and PO4<3-> and in which the mole ratio of trivalent Cr to the total Cr is specified to a galvanized steel sheet in the prescribed Cr coating weight and then subjecting the above sheet to drying by heating without water washing. CONSTITUTION:An aqueous solution of chromic acid in high concentration which contains H3BO3 besides SiO2 and PO4<3-> and in which the mole ratio of trivalent Cr to the total Cr is regulated to 0.40-0.55 is applied to a galvanized steel sheet by 30-120mg/m<2> Cr coating weight. Subsequently, the galvanized steel sheet to which the aqueous solution of chromic acid is applied is subjected, without water washing, to drying by heating to 150-250 deg.C sheet temp. By this method, the galvanized steel sheet on which the chromate film improved in the elution of sexivalent Cr and fingerprint sticking characteristic and practically free from elution even if unaged is formed can be obtained.
JP62221565A 1987-09-04 1987-09-04 High corrosion resistance chromate treatment method for galvanized steel sheet Expired - Fee Related JPH0637706B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62221565A JPH0637706B2 (en) 1987-09-04 1987-09-04 High corrosion resistance chromate treatment method for galvanized steel sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62221565A JPH0637706B2 (en) 1987-09-04 1987-09-04 High corrosion resistance chromate treatment method for galvanized steel sheet

Publications (2)

Publication Number Publication Date
JPS6465272A true JPS6465272A (en) 1989-03-10
JPH0637706B2 JPH0637706B2 (en) 1994-05-18

Family

ID=16768722

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62221565A Expired - Fee Related JPH0637706B2 (en) 1987-09-04 1987-09-04 High corrosion resistance chromate treatment method for galvanized steel sheet

Country Status (1)

Country Link
JP (1) JPH0637706B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03219087A (en) * 1989-09-27 1991-09-26 Nippon Parkerizing Co Ltd Chromate coating solution for zinc-plated steel sheet
KR100694587B1 (en) * 2005-06-08 2007-03-13 최동섭 Wall Structure Using Precast Concrete Panel with Multi Rib Rows
JP2007305605A (en) * 2007-08-17 2007-11-22 Ngk Spark Plug Co Ltd Gasket for spark plug, the spark plug and manufacturing method of the gasket for spark plug

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5410531A (en) * 1977-06-27 1979-01-26 Zeniya Kaiyou Saabisu Kk Device for stopping floating garbage at inlet port
JPS59153884A (en) * 1983-02-19 1984-09-01 Nisshin Steel Co Ltd Zinc or zinc alloy plated steel sheet for base metal for coating
JPS60218483A (en) * 1984-03-23 1985-11-01 パーカー・ケミカル・カンパニー Aqueous composition for treating metal surface and treatment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5410531A (en) * 1977-06-27 1979-01-26 Zeniya Kaiyou Saabisu Kk Device for stopping floating garbage at inlet port
JPS59153884A (en) * 1983-02-19 1984-09-01 Nisshin Steel Co Ltd Zinc or zinc alloy plated steel sheet for base metal for coating
JPS60218483A (en) * 1984-03-23 1985-11-01 パーカー・ケミカル・カンパニー Aqueous composition for treating metal surface and treatment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03219087A (en) * 1989-09-27 1991-09-26 Nippon Parkerizing Co Ltd Chromate coating solution for zinc-plated steel sheet
KR100694587B1 (en) * 2005-06-08 2007-03-13 최동섭 Wall Structure Using Precast Concrete Panel with Multi Rib Rows
JP2007305605A (en) * 2007-08-17 2007-11-22 Ngk Spark Plug Co Ltd Gasket for spark plug, the spark plug and manufacturing method of the gasket for spark plug

Also Published As

Publication number Publication date
JPH0637706B2 (en) 1994-05-18

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees