JPS55125279A - Chromate-treating method for zinc-plated steel sheet - Google Patents

Chromate-treating method for zinc-plated steel sheet

Info

Publication number
JPS55125279A
JPS55125279A JP3305379A JP3305379A JPS55125279A JP S55125279 A JPS55125279 A JP S55125279A JP 3305379 A JP3305379 A JP 3305379A JP 3305379 A JP3305379 A JP 3305379A JP S55125279 A JPS55125279 A JP S55125279A
Authority
JP
Japan
Prior art keywords
steel sheet
chromate
plated steel
zinc
corrosion resistance
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
JP3305379A
Other languages
Japanese (ja)
Other versions
JPS5756554B2 (en
Inventor
Hideo Takamura
Minoshige Goto
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.)
JFE Steel Corp
Original Assignee
Kawasaki Steel Corp
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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP3305379A priority Critical patent/JPS55125279A/en
Publication of JPS55125279A publication Critical patent/JPS55125279A/en
Publication of JPS5756554B2 publication Critical patent/JPS5756554B2/ja
Granted 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
    • C23C22/05—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
    • C23C22/34—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 fluorides or complex fluorides
    • C23C22/37—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 fluorides or complex fluorides containing also hexavalent chromium compounds

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)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

PURPOSE:To form a coating excellent in corrosion resistance and excellently suitable for ground coat, by chromate-treating the surface of zinc-plated steel sheet with aq. fluid contg. prescribed quantities of a water-soluble Cr<6+> cpd., and an Al-F cpd. CONSTITUTION:Zn-plated steel sheet is chromate-treated by dipping it into an aq. treating fluid contg. 3-50g/l at least one member selected from the group comprising Cr<6+> cpds., e.g., CrO3, Na2Cr2O7 etc., and 0.1-10g/l at least one member selected from the group comprising Al-F cpds., e.g., Na3AlF6 etc. Hereby steel sheet is improved in corrosion resistance as it is uncoated compared with that treated by conventional method, and in adhesive property to the coating as it is, and in corrosion resistance after coated.
JP3305379A 1979-03-19 1979-03-19 Chromate-treating method for zinc-plated steel sheet Granted JPS55125279A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3305379A JPS55125279A (en) 1979-03-19 1979-03-19 Chromate-treating method for zinc-plated steel sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3305379A JPS55125279A (en) 1979-03-19 1979-03-19 Chromate-treating method for zinc-plated steel sheet

Publications (2)

Publication Number Publication Date
JPS55125279A true JPS55125279A (en) 1980-09-26
JPS5756554B2 JPS5756554B2 (en) 1982-11-30

Family

ID=12376015

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3305379A Granted JPS55125279A (en) 1979-03-19 1979-03-19 Chromate-treating method for zinc-plated steel sheet

Country Status (1)

Country Link
JP (1) JPS55125279A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6013079A (en) * 1983-07-04 1985-01-23 Kawasaki Steel Corp Method for chromating galvanized steel sheet
JPS6086282A (en) * 1983-10-15 1985-05-15 Kawasaki Steel Corp Chromate treated zinc plated steel plate excellent in corrosion resistance and paintability

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4929407A (en) * 1972-07-20 1974-03-15

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4929407A (en) * 1972-07-20 1974-03-15

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6013079A (en) * 1983-07-04 1985-01-23 Kawasaki Steel Corp Method for chromating galvanized steel sheet
JPS6086282A (en) * 1983-10-15 1985-05-15 Kawasaki Steel Corp Chromate treated zinc plated steel plate excellent in corrosion resistance and paintability
JPH0349990B2 (en) * 1983-10-15 1991-07-31 Kawasaki Steel Co

Also Published As

Publication number Publication date
JPS5756554B2 (en) 1982-11-30

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