JPS6456877A - Production of chromated galvanized steel sheet - Google Patents

Production of chromated galvanized steel sheet

Info

Publication number
JPS6456877A
JPS6456877A JP21422787A JP21422787A JPS6456877A JP S6456877 A JPS6456877 A JP S6456877A JP 21422787 A JP21422787 A JP 21422787A JP 21422787 A JP21422787 A JP 21422787A JP S6456877 A JPS6456877 A JP S6456877A
Authority
JP
Japan
Prior art keywords
steel sheet
ions
galvanized steel
tervalent
amt
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
JP21422787A
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 JP21422787A priority Critical patent/JPS6456877A/en
Publication of JPS6456877A publication Critical patent/JPS6456877A/en
Pending legal-status Critical Current

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  • Chemical Treatment Of Metals (AREA)

Abstract

PURPOSE:To provide superior corrosion resistance to the titled steel sheet by applying an aq. soln. contg. a specified amt. of SiO2 basing on the total amt. of hexa- and tervalent Cr ions including a specified amt. of tervalent Cr ions to a galvanized steel sheet and by drying this steel sheet. CONSTITUTION:An aq. soln. contg. Cr ions composed of hexa- 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. SiO2 as colloidal silica in 0.01-0.20 ratio to the total amt. of the Cr ions [expressed in terms of chromic acid (CrO3)] is prepd. The aq. soln. is applied to a hot dip galvanized steel sheet and this steel sheet is dried without washing to remove the water. Thus, a chromated hot dip galvanized steel sheet having improved corrosion resistance is obtd.
JP21422787A 1987-08-28 1987-08-28 Production of chromated galvanized steel sheet Pending JPS6456877A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21422787A JPS6456877A (en) 1987-08-28 1987-08-28 Production of chromated galvanized steel sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21422787A JPS6456877A (en) 1987-08-28 1987-08-28 Production of chromated galvanized steel sheet

Publications (1)

Publication Number Publication Date
JPS6456877A true JPS6456877A (en) 1989-03-03

Family

ID=16652299

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21422787A Pending JPS6456877A (en) 1987-08-28 1987-08-28 Production of chromated galvanized steel sheet

Country Status (1)

Country Link
JP (1) JPS6456877A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0716163A1 (en) * 1994-12-07 1996-06-12 ATOTECH Deutschland GmbH Chromating bath and process for finishing surfaces of zinc, zinc alloys or cadmium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0716163A1 (en) * 1994-12-07 1996-06-12 ATOTECH Deutschland GmbH Chromating bath and process for finishing surfaces of zinc, zinc alloys or cadmium
FR2727983A1 (en) * 1994-12-07 1996-06-14 Atotech France CHROMATION BATH AND PROCESS FOR FINISHING ZINC, ZINC ALLOY, OR CADMIUM SURFACES

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