GB277295A - Improvements in chromium plating - Google Patents

Improvements in chromium plating

Info

Publication number
GB277295A
GB277295A GB16876/27A GB1687627A GB277295A GB 277295 A GB277295 A GB 277295A GB 16876/27 A GB16876/27 A GB 16876/27A GB 1687627 A GB1687627 A GB 1687627A GB 277295 A GB277295 A GB 277295A
Authority
GB
United Kingdom
Prior art keywords
finish
chromium
plated
electrolyte
temperature
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
GB16876/27A
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.)
METALS PROT CORP
Original Assignee
METALS PROT 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 METALS PROT CORP filed Critical METALS PROT CORP
Publication of GB277295A publication Critical patent/GB277295A/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
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/10—Electroplating with more than one layer of the same or of different metals
    • C25D5/12—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium
    • C25D5/14—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium two or more layers being of nickel or chromium, e.g. duplex or triplex layers
    • 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
    • C25D5/627—Electroplating characterised by the visual appearance of the layers, e.g. colour, brightness or mat appearance

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)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

277,295. Metals Protection Corporation, (Assignees of Humphries, C. H.). Sept. 9, 1926, [Convention date]. Chromium, depositing.-Iron, steel, or other metal is plated with chromium at a temperature e.g. 20‹ C at which the current efficiency is high, the deposit having a dull finish; it is then further plated at a higher temperature e.g. 40‹ C. so as to obtain a bright finish. The second coating may be thin; a '' satin " finish is thereby produced. Both platings may take place in the same electrolyte. The electrolyte may consist of a solution of chromic acid together with small amounts of hydrated chromic hydroxide and ammonium sulphate. The current density for the first plating is 25 amps. per sq. ft.
GB16876/27A 1926-09-09 1927-06-24 Improvements in chromium plating Expired GB277295A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US134577A US1836598A (en) 1926-09-09 1926-09-09 Process of chromium plating

Publications (1)

Publication Number Publication Date
GB277295A true GB277295A (en) 1927-12-01

Family

ID=22463988

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16876/27A Expired GB277295A (en) 1926-09-09 1927-06-24 Improvements in chromium plating

Country Status (4)

Country Link
US (1) US1836598A (en)
DE (1) DE513742C (en)
FR (1) FR640913A (en)
GB (1) GB277295A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2714088A (en) * 1952-01-08 1955-07-26 Harshaw Chem Corp Electrodeposited coatings
DE946401C (en) * 1954-04-14 1956-08-02 Autoyre Company Process for increasing the corrosion resistance of a finished chrome-plated metal object
US3157585A (en) * 1959-12-18 1964-11-17 Gen Motors Corp Chromium plating
JP6126852B2 (en) * 2012-02-21 2017-05-10 ハウメット コーポレイションＨｏｗｍｅｔ Ｃｏｒｐｏｒａｔｉｏｎ Gas turbine component coating and coating method

Also Published As

Publication number Publication date
DE513742C (en) 1930-12-02
FR640913A (en) 1928-07-24
US1836598A (en) 1931-12-15

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