JPS6436795A - Surface-treated steel material excellent in adhesive strength and corrosion resistance and its production - Google Patents

Surface-treated steel material excellent in adhesive strength and corrosion resistance and its production

Info

Publication number
JPS6436795A
JPS6436795A JP19239387A JP19239387A JPS6436795A JP S6436795 A JPS6436795 A JP S6436795A JP 19239387 A JP19239387 A JP 19239387A JP 19239387 A JP19239387 A JP 19239387A JP S6436795 A JPS6436795 A JP S6436795A
Authority
JP
Japan
Prior art keywords
steel material
corrosion resistance
adhesive strength
treated steel
material excellent
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
JP19239387A
Other languages
Japanese (ja)
Inventor
Hajime Kimura
Kazuo Mochizuki
Chikako Ishikawa
Toshiro Ichida
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 JP19239387A priority Critical patent/JPS6436795A/en
Publication of JPS6436795A publication Critical patent/JPS6436795A/en
Pending legal-status Critical Current

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  • Chemical Treatment Of Metals (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

PURPOSE:To manufacture a surface-treated steel material excellent in adhesive strength and corrosion resistance, by successively forming a primary layer of Co-Zn alloy plating and a secondary layer of electrolytic chromating under respectively specified conditions on the surface of a galvanized steel material. CONSTITUTION:Co-Zn alloy plating is applied to the surface of a galvanized steel material by using this steel material as a cathode in >=1A/dm<2> current density, by which a Co-Zn alloy plating film as formed as the primary layer. Subsequently, an electrolytic chromate film as the secondary layer is formed by using a bath containing 2.6-78g/l of Cr<6+>, 0.5-75g/l, expressed in terms of SiO2 and/or Al2O3, of colloidal silica and/or slumina sol, and 0.05-5g/l, expressed in terms of F, of fluoride under the electrolytic chromating conditions of 1-50A/dm<2> current density and 1-100C/dm<2> quantity of electricity. By this method, whether painted or unpainted, the surface-treated steel material excellent in adhesive strength and corrosion resistance can be obtained.
JP19239387A 1987-07-31 1987-07-31 Surface-treated steel material excellent in adhesive strength and corrosion resistance and its production Pending JPS6436795A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19239387A JPS6436795A (en) 1987-07-31 1987-07-31 Surface-treated steel material excellent in adhesive strength and corrosion resistance and its production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19239387A JPS6436795A (en) 1987-07-31 1987-07-31 Surface-treated steel material excellent in adhesive strength and corrosion resistance and its production

Publications (1)

Publication Number Publication Date
JPS6436795A true JPS6436795A (en) 1989-02-07

Family

ID=16290559

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19239387A Pending JPS6436795A (en) 1987-07-31 1987-07-31 Surface-treated steel material excellent in adhesive strength and corrosion resistance and its production

Country Status (1)

Country Link
JP (1) JPS6436795A (en)

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