JPS6456878A - Production of chromated steel sheet having superior coatability - Google Patents

Production of chromated steel sheet having superior coatability

Info

Publication number
JPS6456878A
JPS6456878A JP21422587A JP21422587A JPS6456878A JP S6456878 A JPS6456878 A JP S6456878A JP 21422587 A JP21422587 A JP 21422587A JP 21422587 A JP21422587 A JP 21422587A JP S6456878 A JPS6456878 A JP S6456878A
Authority
JP
Japan
Prior art keywords
ions
steel sheet
tervalent
soln
silicofluoride
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.)
Pending
Application number
JP21422587A
Other languages
Japanese (ja)
Inventor
Shingo Nomura
Katsuhiko Tsuji
Mitsutoshi Sakaguchi
Tadayoshi Kamigaki
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP21422587A priority Critical patent/JPS6456878A/en
Publication of JPS6456878A publication Critical patent/JPS6456878A/en
Pending 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
    • 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
    • C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
    • C23C2222/20—Use of solutions containing silanes

Abstract

PURPOSE:To produce a chromated steel sheet having superior coatability by applying an aq. soln. contg. specified amts. of ammonium silicofluoride and a silane coupling agent basing on the total amt. of hexavalent and tervalent Cr ions including a specified amt. of tervalent Cr ions to a steel sheet and by drying this steel sheet. CONSTITUTION:An aq. soln. contg. Cr ions composed of hexavalent and tervalent Cr ions and including tervalent Cr ions in 0.3-about 0.5 ratio to the total amt. of the Cr ions and further contg. one or more among ammonium silicofluoride, magnesium silicofluoride and calcium silicofluoride by >=1.6X10<-2>mol. per 1mol. Cr ins and a silane coupling agent by >=1.6X10<-2>mol. per 1mol. Cr ions is prepd. The aq. soln. is applied to a steel sheet and this steel sheet is dried without washing to remove the water. One or more kinds of epoxysilane coupling agents or aminosilane coupling agents are used as the coupling agent.
JP21422587A 1987-08-28 1987-08-28 Production of chromated steel sheet having superior coatability Pending JPS6456878A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21422587A JPS6456878A (en) 1987-08-28 1987-08-28 Production of chromated steel sheet having superior coatability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21422587A JPS6456878A (en) 1987-08-28 1987-08-28 Production of chromated steel sheet having superior coatability

Publications (1)

Publication Number Publication Date
JPS6456878A true JPS6456878A (en) 1989-03-03

Family

ID=16652272

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21422587A Pending JPS6456878A (en) 1987-08-28 1987-08-28 Production of chromated steel sheet having superior coatability

Country Status (1)

Country Link
JP (1) JPS6456878A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0326539A (en) * 1989-06-26 1991-02-05 Sumitomo Metal Ind Ltd Anti-corrossive painted steel plate excellent in weldability
EP0492306A2 (en) * 1990-12-24 1992-07-01 ARMCO Inc. Steel sheet with enhanced corrosion resistance having a silane treated silicate coating

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0326539A (en) * 1989-06-26 1991-02-05 Sumitomo Metal Ind Ltd Anti-corrossive painted steel plate excellent in weldability
EP0492306A2 (en) * 1990-12-24 1992-07-01 ARMCO Inc. Steel sheet with enhanced corrosion resistance having a silane treated silicate coating
EP0492306A3 (en) * 1990-12-24 1995-10-11 Armco Steel Co Lp Steel sheet with enhanced corrosion resistance having a silane treated silicate coating

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