GB1437441A - Surface treatment of tinplate - Google Patents

Surface treatment of tinplate

Info

Publication number
GB1437441A
GB1437441A GB3264073A GB3264073A GB1437441A GB 1437441 A GB1437441 A GB 1437441A GB 3264073 A GB3264073 A GB 3264073A GB 3264073 A GB3264073 A GB 3264073A GB 1437441 A GB1437441 A GB 1437441A
Authority
GB
United Kingdom
Prior art keywords
plated steel
steel
tin plated
tin
cathode
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
GB3264073A
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 GB3264073A priority Critical patent/GB1437441A/en
Publication of GB1437441A publication Critical patent/GB1437441A/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
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/04—Electroplating: Baths therefor from solutions of chromium
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/48—After-treatment of electroplated surfaces
    • C25D5/50—After-treatment of electroplated surfaces by heat-treatment
    • C25D5/505—After-treatment of electroplated surfaces by heat-treatment of electroplated tin coatings, e.g. by melting

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)

Abstract

1437441 Electrolytic chromate treatment of tin plated steel KAWASAKI STEEL CORP 9 July 1973 32640/73 Heading C7B Tin plated steel is (a) electrolytically chromate treated by contacting it as cathode with a solution containing hexavalent chromium ions and (b) thereafter heated to a temperature which is greater than the melting point of tin (i.e. 232‹C) and not greater than 400 C. Specified conditions are an aqueous solution of Na 2 Cr 2 O 7 at pH 3.0 to 5.0 and at room temperature to 70‹C, a current density of 0.1 to 10A/dm<SP>2</SP> and a treating time of 0.1 to 3 seconds. The heating may be at 280‹C to 350‹C by resistance heating with an electric current being fed through the tin plated steel. The method may include a further step of contacting the treated steel as cathode with a solution containing hexavalent chromium ions.
GB3264073A 1973-07-09 1973-07-09 Surface treatment of tinplate Expired GB1437441A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3264073A GB1437441A (en) 1973-07-09 1973-07-09 Surface treatment of tinplate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3264073A GB1437441A (en) 1973-07-09 1973-07-09 Surface treatment of tinplate

Publications (1)

Publication Number Publication Date
GB1437441A true GB1437441A (en) 1976-05-26

Family

ID=10341790

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3264073A Expired GB1437441A (en) 1973-07-09 1973-07-09 Surface treatment of tinplate

Country Status (1)

Country Link
GB (1) GB1437441A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2362056A1 (en) * 1976-08-18 1978-03-17 Toyo Kohan Co Ltd STEEL SHEET USEFUL FOR FORMING CANS OF FOOD AND BEVERAGE
EP0069238A2 (en) * 1981-06-10 1983-01-12 Kawasaki Steel Corporation Production of highly rust resistant tinplate sheets for welded cans

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2362056A1 (en) * 1976-08-18 1978-03-17 Toyo Kohan Co Ltd STEEL SHEET USEFUL FOR FORMING CANS OF FOOD AND BEVERAGE
EP0069238A2 (en) * 1981-06-10 1983-01-12 Kawasaki Steel Corporation Production of highly rust resistant tinplate sheets for welded cans
EP0069238A3 (en) * 1981-06-10 1983-07-20 Kawasaki Steel Corporation Production of highly rust resistant tinplate sheets for welded cans

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19930708