GB1318311A - Can stock with differential protective coatings - Google Patents

Can stock with differential protective coatings

Info

Publication number
GB1318311A
GB1318311A GB3347970A GB3347970A GB1318311A GB 1318311 A GB1318311 A GB 1318311A GB 3347970 A GB3347970 A GB 3347970A GB 3347970 A GB3347970 A GB 3347970A GB 1318311 A GB1318311 A GB 1318311A
Authority
GB
United Kingdom
Prior art keywords
current
differential
tinplate
coating
lightly
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.)
Expired
Application number
GB3347970A
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.)
USS Engineers and Consultants Inc
Original Assignee
USS Engineers and Consultants Inc
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 USS Engineers and Consultants Inc filed Critical USS Engineers and Consultants Inc
Publication of GB1318311A publication Critical patent/GB1318311A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/38—Chromatising

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Electrochemical Coating By Surface Reaction (AREA)

Abstract

1318311 Electrolytically coating tinplate with chromium oxide USS ENGS & CONSULTANTS Inc 9 July 1970 [9 July 1969] 33479/70 Heading C7B Differential tinplate having a coating of less than 0À5 pounds per base box (i.e. less than 0À00003 inch thick) on the lightly tinned side is electrolysed as cathode in a Na 2 Cr 2 O 7 solution of 20-30 g/l, having a pH of 3À5-5À5 and temperature 160-200‹F., to provide a differential Cr 2 O 3 coating thereon, supplying 100-170 coulombs/ sq ft. of current to the heavily tinned side to provide thereon 1À0-1À5 mg Cr/sq ft. and no more than 45 coulombs/sq ft. of current to the lightly tinned side to provide thereon 0À4-0À8 mg Cr/sq ft., to maintain good solderability and resistance to sulphide staining and detinning. Differential applied current may be effected by providing a larger anode surface area for the heavy current side, e.g. passing the tinplate strip through separate tanks adjacent pairs of anodes on the heavily tinned side with or without a single anode on the lightly tinned side.
GB3347970A 1969-07-09 1970-07-09 Can stock with differential protective coatings Expired GB1318311A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US84051969A 1969-07-09 1969-07-09

Publications (1)

Publication Number Publication Date
GB1318311A true GB1318311A (en) 1973-05-31

Family

ID=25282584

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3347970A Expired GB1318311A (en) 1969-07-09 1970-07-09 Can stock with differential protective coatings

Country Status (9)

Country Link
JP (1) JPS4927491B1 (en)
BE (1) BE752901A (en)
DE (1) DE2033938A1 (en)
ES (1) ES381599A1 (en)
FR (1) FR2051618B1 (en)
GB (1) GB1318311A (en)
IT (1) IT1036033B (en)
NL (1) NL7010185A (en)
ZA (1) ZA704541B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2738151A1 (en) * 1976-08-25 1978-03-02 Toyo Kohan Co Ltd COATED STEEL SHEET, METHOD OF MANUFACTURING IT AND ITS USE FOR MANUFACTURING TIN CANS
EP3722464A1 (en) * 2019-04-09 2020-10-14 ThyssenKrupp Rasselstein GmbH Method for passivating the surface of a black plate or a tin plate and electrolysis system for carrying out the method
CN115247263A (en) * 2022-06-20 2022-10-28 上海兴赛尔表面材料有限公司 Environment-friendly passivation composition for tin plate and preparation method and application thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5323833A (en) * 1976-08-18 1978-03-04 Toyo Kohan Co Ltd Surface treated steel sheet for coating
JPS56130487A (en) * 1980-03-18 1981-10-13 Toyo Kohan Co Ltd After-treatment for extra-thin tin-plated steel sheet for welding

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2738151A1 (en) * 1976-08-25 1978-03-02 Toyo Kohan Co Ltd COATED STEEL SHEET, METHOD OF MANUFACTURING IT AND ITS USE FOR MANUFACTURING TIN CANS
EP3722464A1 (en) * 2019-04-09 2020-10-14 ThyssenKrupp Rasselstein GmbH Method for passivating the surface of a black plate or a tin plate and electrolysis system for carrying out the method
CN111793815A (en) * 2019-04-09 2020-10-20 蒂森克虏拉塞斯坦有限公司 Method for passivating the surface of a blackplate or tinplate and electrolysis system for carrying out the method
CN115247263A (en) * 2022-06-20 2022-10-28 上海兴赛尔表面材料有限公司 Environment-friendly passivation composition for tin plate and preparation method and application thereof

Also Published As

Publication number Publication date
FR2051618B1 (en) 1974-09-20
NL7010185A (en) 1971-01-12
ES381599A1 (en) 1972-11-16
FR2051618A1 (en) 1971-04-09
JPS4927491B1 (en) 1974-07-18
ZA704541B (en) 1971-08-25
DE2033938A1 (en) 1971-01-28
IT1036033B (en) 1979-10-30
BE752901A (en) 1971-01-04

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees