GB1099836A - Process for treating electrolytically chromated metal surfaces - Google Patents

Process for treating electrolytically chromated metal surfaces

Info

Publication number
GB1099836A
GB1099836A GB2906465A GB2906465A GB1099836A GB 1099836 A GB1099836 A GB 1099836A GB 2906465 A GB2906465 A GB 2906465A GB 2906465 A GB2906465 A GB 2906465A GB 1099836 A GB1099836 A GB 1099836A
Authority
GB
United Kingdom
Prior art keywords
metal
chromated
chromated metal
treatment
aqueous solution
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
GB2906465A
Inventor
Taro Oyama
Tsuneo Inui
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.)
Toyo Kohan Co Ltd
Original Assignee
Toyo Kohan Co Ltd
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 Toyo Kohan Co Ltd filed Critical Toyo Kohan Co Ltd
Publication of GB1099836A publication Critical patent/GB1099836A/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)
  • Chemical Treatment Of Metals (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Abstract

A process for treatment of an electrolytically chromated metal before the chromate coating thereon is allowed to dry comprises rinsing with water; immersing in an aqueous solution containing a total of from 1 to 100 gms/1 of at least one of ammonium hydroxide, alkali metal hydroxides, alkaline earth metal hydroxides, and alkali metal and ammonium acetates, borates, carbonates, bicarbonates, chromates, dichromates, formates, oxalates, phosphates, pyrophosphates, hypophosphates, phosphites, hypophosphites and silicates; further rinsing with water and thereafter drying of the chromated metal. The temperature of the aqueous solution is preferably 30 DEG to 70 DEG C., and the immersion time therein is preferably 1 to 30 secs. The chromated metal may be cathodically treated in said solution, preferably using a current density of less than 10 A/dm2. The treatment may be applied to chromate coatings formed on iron, steel, aluminium, zinc, tin, nickel, chromium or an alloy thereof.
GB2906465A 1965-07-12 1965-07-08 Process for treating electrolytically chromated metal surfaces Expired GB1099836A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET0028975 1965-07-12

Publications (1)

Publication Number Publication Date
GB1099836A true GB1099836A (en) 1968-01-17

Family

ID=7554556

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2906465A Expired GB1099836A (en) 1965-07-12 1965-07-08 Process for treating electrolytically chromated metal surfaces

Country Status (2)

Country Link
DE (1) DE1521044C3 (en)
GB (1) GB1099836A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2001274A1 (en) * 1969-01-13 1970-07-30 Nippon Kokan Kk Process for the electrolytic treatment of sheet steel in a chromium salt solution
US4071416A (en) * 1976-02-13 1978-01-31 The International Nickel Company, Inc. Treatment of chromium-containing iron alloys

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2001274A1 (en) * 1969-01-13 1970-07-30 Nippon Kokan Kk Process for the electrolytic treatment of sheet steel in a chromium salt solution
US4071416A (en) * 1976-02-13 1978-01-31 The International Nickel Company, Inc. Treatment of chromium-containing iron alloys

Also Published As

Publication number Publication date
DE1521044B2 (en) 1973-05-30
DE1521044A1 (en) 1969-12-11
DE1521044C3 (en) 1974-01-03

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