JPS5672195A - Plating method for forming zn-mn double layer with mn sulfate bath by addition of sulfurous acid - Google Patents

Plating method for forming zn-mn double layer with mn sulfate bath by addition of sulfurous acid

Info

Publication number
JPS5672195A
JPS5672195A JP14721979A JP14721979A JPS5672195A JP S5672195 A JPS5672195 A JP S5672195A JP 14721979 A JP14721979 A JP 14721979A JP 14721979 A JP14721979 A JP 14721979A JP S5672195 A JPS5672195 A JP S5672195A
Authority
JP
Japan
Prior art keywords
sulfurous acid
addition
steel sheet
double layer
forming
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
JP14721979A
Other languages
Japanese (ja)
Other versions
JPS639031B2 (en
Inventor
Yoshio Shindo
Mitsuo Tanaka
Koichi Wada
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 Corp
Original Assignee
Nippon 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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP14721979A priority Critical patent/JPS5672195A/en
Publication of JPS5672195A publication Critical patent/JPS5672195A/en
Publication of JPS639031B2 publication Critical patent/JPS639031B2/ja
Granted legal-status Critical Current

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Landscapes

  • Electroplating And Plating Baths Therefor (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

PURPOSE: To form a double layer of Zn-Mn which is excellent in adhesive property between the two layers and in corrosion resistance, by galvanizing the surface of a steel sheet, then by electrodepositing Mn by use of a plating bath having specific concn. of total polyvalent Mn by addition with sulfurous acid.
CONSTITUTION: On the surface of steel sheet is electrodeposited 1W30g/m2 Zn using a bath contg. no cyanic compounds, then 5W30g/m2 Mn is electroplated on said surface using a plating bath composed of ≤0.5g/l sulfurous acid ions, 25W250g/l total sulfuric acid group concn., and ≥10g/l total polyvalent Mn, and contg. ammonium sulfate as a supporting electrolyte. This double-layer plating allows to manufacture a plated steel sheet having metallic luster, causing no deterioration in processability, weldability, and having excellent corrosion resistance.
COPYRIGHT: (C)1981,JPO&Japio
JP14721979A 1979-11-14 1979-11-14 Plating method for forming zn-mn double layer with mn sulfate bath by addition of sulfurous acid Granted JPS5672195A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14721979A JPS5672195A (en) 1979-11-14 1979-11-14 Plating method for forming zn-mn double layer with mn sulfate bath by addition of sulfurous acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14721979A JPS5672195A (en) 1979-11-14 1979-11-14 Plating method for forming zn-mn double layer with mn sulfate bath by addition of sulfurous acid

Publications (2)

Publication Number Publication Date
JPS5672195A true JPS5672195A (en) 1981-06-16
JPS639031B2 JPS639031B2 (en) 1988-02-25

Family

ID=15425257

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14721979A Granted JPS5672195A (en) 1979-11-14 1979-11-14 Plating method for forming zn-mn double layer with mn sulfate bath by addition of sulfurous acid

Country Status (1)

Country Link
JP (1) JPS5672195A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991017884A1 (en) * 1990-05-11 1991-11-28 Bethlehem Steel Corporation Zinc-manganese alloy coated steel sheet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991017884A1 (en) * 1990-05-11 1991-11-28 Bethlehem Steel Corporation Zinc-manganese alloy coated steel sheet

Also Published As

Publication number Publication date
JPS639031B2 (en) 1988-02-25

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