GB1079646A - Improvements in or relating to chromium plating - Google Patents

Improvements in or relating to chromium plating

Info

Publication number
GB1079646A
GB1079646A GB31366/64A GB3136664A GB1079646A GB 1079646 A GB1079646 A GB 1079646A GB 31366/64 A GB31366/64 A GB 31366/64A GB 3136664 A GB3136664 A GB 3136664A GB 1079646 A GB1079646 A GB 1079646A
Authority
GB
United Kingdom
Prior art keywords
cro3
sif6
sulphate
proportion
ratio
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
GB31366/64A
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.)
M&T Chemicals Inc
Original Assignee
M&T Chemicals 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 M&T Chemicals Inc filed Critical M&T Chemicals Inc
Publication of GB1079646A publication Critical patent/GB1079646A/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
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/04—Electroplating: Baths therefor from solutions of chromium

Landscapes

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

Abstract

Bright chromium plate is electrodeposited on a cathode, e.g nickel-plated brass panels, at a rate of at least 1.25 microns per minute from a plating bath containing chromic acid and sulphate with optional complex fluorides such as silicofluorides, fluo-aluminates, -zirconates and -titanates, wherein the CrO3 concentration is 100-400 g/1, the ratio CrO3 to (SO4-+SiF6-) is 25-100, the proportion SiF6-: SO4- is 0-4, and the temperature is 27-94 DEG C., at least two of these four variables being within the more specific limits CrO3 150-250 g/1, ratio 25-70, proportion 0-2 and temperature 60-82 DEG C., and the cathode current density being at least 150 amps/sq. dm. The anode may be of lead and the sulphate may be added as sulphuric acid.
GB31366/64A 1963-08-05 1964-08-04 Improvements in or relating to chromium plating Expired GB1079646A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US300107A US3337430A (en) 1963-08-05 1963-08-05 Ultrahigh-speed chromium electrodeposition

Publications (1)

Publication Number Publication Date
GB1079646A true GB1079646A (en) 1967-08-16

Family

ID=23157741

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31366/64A Expired GB1079646A (en) 1963-08-05 1964-08-04 Improvements in or relating to chromium plating

Country Status (5)

Country Link
US (1) US3337430A (en)
JP (1) JPS4927017B1 (en)
DE (1) DE1496903B2 (en)
GB (1) GB1079646A (en)
NL (1) NL6408934A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1521040B2 (en) * 1964-10-28 1971-11-11 Alfred Teves Gmbh, 6000 Frankfurt PROCESS FOR GALVANIC SOFT CHROMING OF METAL OBJECTS, IN PARTICULAR CAST IRON
US3498892A (en) * 1966-05-04 1970-03-03 M & T Chemicals Inc Electrodeposition of chromium upon a continuous metal strip
JPS5339822U (en) * 1976-09-10 1978-04-06
CN103122470B (en) * 2011-11-17 2015-12-09 符士正 Automobile cast iron die plating solution

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1942469A (en) * 1931-10-03 1934-01-09 Timken Axle Co Detroit Chromium plating
US2950234A (en) * 1958-02-26 1960-08-23 Metal & Thermit Corp Chromium plating process and bath
US2952590A (en) * 1959-08-14 1960-09-13 Metal & Thermit Corp Process for chromium plating
US3108933A (en) * 1961-02-28 1963-10-29 M & T Chemicals Inc Process and composition for chromium plating

Also Published As

Publication number Publication date
DE1496903B2 (en) 1976-10-21
DE1496903A1 (en) 1969-08-14
US3337430A (en) 1967-08-22
NL6408934A (en) 1965-02-08
JPS4927017B1 (en) 1974-07-13

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