JPS55148799A - Electrolytic chromic-acid-treated steel sheet having low deterioration on standing of adhesive strength and its manufacture - Google Patents

Electrolytic chromic-acid-treated steel sheet having low deterioration on standing of adhesive strength and its manufacture

Info

Publication number
JPS55148799A
JPS55148799A JP5403679A JP5403679A JPS55148799A JP S55148799 A JPS55148799 A JP S55148799A JP 5403679 A JP5403679 A JP 5403679A JP 5403679 A JP5403679 A JP 5403679A JP S55148799 A JPS55148799 A JP S55148799A
Authority
JP
Japan
Prior art keywords
chromate coating
steel sheet
standing
acid
adhesive strength
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
JP5403679A
Other languages
Japanese (ja)
Other versions
JPS5927399B2 (en
Inventor
Yukinobu Higuchi
Yukio Tsukamoto
Minoru Kamata
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 JP54054036A priority Critical patent/JPS5927399B2/en
Publication of JPS55148799A publication Critical patent/JPS55148799A/en
Publication of JPS5927399B2 publication Critical patent/JPS5927399B2/en
Expired legal-status Critical Current

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  • Electrochemical Coating By Surface Reaction (AREA)

Abstract

PURPOSE: The above mentioned steel sheet having the minimum deterioration on standing of adhesive strength at the time of using for adhesion can, made by specifying the atomic ratio of S/O in chromate coating and oxo forming degree of outermost surface of chromate coating.
CONSTITUTION: Amount of chromate coating is adjusted so as 5W50mg/m2 of it calculated in terms of Cr to remain, after metallic Cr and chromate coating, are electrodeposited on the steel sheet. Next, cathode electrolytic treatment is carried out at 50°C or more, especially 60°C or more, in the aqueous solution in which 204 2-/Cr6+ is smaller than 1/75, in case of using the chromate coating as it is or washing in water again. That is, oxo forming degree of the chromate coating is improve by liquating anion, especially SO4 2-, contained in the chromate coating and also, liquating Cr6+. Then, the above mentioned electrolytic chromic-acid-treated steel sheet is obtained by treating the chromate coating after carrying out the above cathode treatment moreover at 65W 100°C for 0.3W10sec by a high temperature water having pH of 4 or more. S/O (atomic ratio) in the chromate coating layer of the steel sheet, is 0.2 or less and also, the oxo forming degree in the chromate coating is 0.90 or more.
COPYRIGHT: (C)1980,JPO&Japio
JP54054036A 1979-05-04 1979-05-04 Method for manufacturing electrolytic chromic acid treated steel sheet with minimal deterioration of adhesive strength over time Expired JPS5927399B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54054036A JPS5927399B2 (en) 1979-05-04 1979-05-04 Method for manufacturing electrolytic chromic acid treated steel sheet with minimal deterioration of adhesive strength over time

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54054036A JPS5927399B2 (en) 1979-05-04 1979-05-04 Method for manufacturing electrolytic chromic acid treated steel sheet with minimal deterioration of adhesive strength over time

Publications (2)

Publication Number Publication Date
JPS55148799A true JPS55148799A (en) 1980-11-19
JPS5927399B2 JPS5927399B2 (en) 1984-07-05

Family

ID=12959354

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54054036A Expired JPS5927399B2 (en) 1979-05-04 1979-05-04 Method for manufacturing electrolytic chromic acid treated steel sheet with minimal deterioration of adhesive strength over time

Country Status (1)

Country Link
JP (1) JPS5927399B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113864833A (en) * 2014-02-28 2021-12-31 Seb公司 Communication induction cooking table and searching and monitoring method of communication cooking equipment on table

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61146669U (en) * 1985-03-04 1986-09-10

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5235618A (en) * 1975-09-16 1977-03-18 Yogo Ito Method and device for tuning five-holed bamboo

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5235618A (en) * 1975-09-16 1977-03-18 Yogo Ito Method and device for tuning five-holed bamboo

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113864833A (en) * 2014-02-28 2021-12-31 Seb公司 Communication induction cooking table and searching and monitoring method of communication cooking equipment on table
CN113864833B (en) * 2014-02-28 2024-02-27 Seb公司 Communication induction cooking station and method for searching and monitoring communication cooking devices on said station

Also Published As

Publication number Publication date
JPS5927399B2 (en) 1984-07-05

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