GB1261636A - Method for chrome plating metallic surfaces - Google Patents

Method for chrome plating metallic surfaces

Info

Publication number
GB1261636A
GB1261636A GB00157/69A GB1015769A GB1261636A GB 1261636 A GB1261636 A GB 1261636A GB 00157/69 A GB00157/69 A GB 00157/69A GB 1015769 A GB1015769 A GB 1015769A GB 1261636 A GB1261636 A GB 1261636A
Authority
GB
United Kingdom
Prior art keywords
section
plated
screens
plating
chromium
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
GB00157/69A
Inventor
Aurel Corneliu Radoi
Antoaneta Marinesc Draghicescu
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.)
INST CERCETARI TEHNOLOGICE PEN
Original Assignee
INST CERCETARI TEHNOLOGICE PEN
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 INST CERCETARI TEHNOLOGICE PEN filed Critical INST CERCETARI TEHNOLOGICE PEN
Priority to GB00157/69A priority Critical patent/GB1261636A/en
Publication of GB1261636A publication Critical patent/GB1261636A/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
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C25D17/008—Current shielding devices
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D7/00—Electroplating characterised by the article coated
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D7/00—Electroplating characterised by the article coated
    • C25D7/04—Tubes; Rings; Hollow bodies
    • 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

1,261,636. Chromium plating elongated articles. INSTITUTUL DE CERCETARI TEHNOLOGICE PENTRU CONSTRUCTII DE MASINI. Feb. 26, 1969, No.10157/69. Heading C7B. An elongated metallic surface is chromium plated section by section, each section being plated by arranging it in a plating electrolyte in spaced relation to an anode and disposing a pair of screens at cathode potential at the limits of the section and at equal distances from the anode. Fig.1 shows an elongated rod 1 to be plated the section being plated being sealed in plating tank 2 by sealing members 3. A perforated anode 4 of Pb-Sb or Pb-Sn-Ag alloy surrounds the section, and two screens, one of which 5a, is shown, surround the rod at the ends of the section. Each screen, Fig.2, is made of two semi-annular elements of insulating material which together make an annular member 6 with a thinwalled annular metallic element 8 mounted thereon by screws 7. The tank 4 is filled with chromium plating electrolyte and the article is given anodic treatment for 90 seconds at increasing current density of 12-40 amps/sq. dm. The polarity is reversed and plating is operated at 40-60 amps/sq. dm., the electrolyte containing 200-250 g/l of CrO 3 and 2-2À5 g/l of sulphate ions. The screens ensure a chromium layer of progressively diminishing thickness in the region of the screens, and this is built up to a layer of uniform thickness by operations on successive sections.
GB00157/69A 1969-02-26 1969-02-26 Method for chrome plating metallic surfaces Expired GB1261636A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB00157/69A GB1261636A (en) 1969-02-26 1969-02-26 Method for chrome plating metallic surfaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB00157/69A GB1261636A (en) 1969-02-26 1969-02-26 Method for chrome plating metallic surfaces

Publications (1)

Publication Number Publication Date
GB1261636A true GB1261636A (en) 1972-01-26

Family

ID=9962586

Family Applications (1)

Application Number Title Priority Date Filing Date
GB00157/69A Expired GB1261636A (en) 1969-02-26 1969-02-26 Method for chrome plating metallic surfaces

Country Status (1)

Country Link
GB (1) GB1261636A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000022194A2 (en) * 1998-10-15 2000-04-20 Central Research Laboratories Limited Method of, and apparatus for, electro-plating a structure
GB2439807A (en) * 2006-06-20 2008-01-09 Vetco Gray Inc A localised electroplating system
US8101050B2 (en) 2006-06-20 2012-01-24 Vetco Gray Inc. System, method, and apparatus for continuous electroplating of elongated workpieces

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000022194A2 (en) * 1998-10-15 2000-04-20 Central Research Laboratories Limited Method of, and apparatus for, electro-plating a structure
WO2000022194A3 (en) * 1998-10-15 2000-10-19 Central Research Lab Ltd Method of, and apparatus for, electro-plating a structure
GB2439807A (en) * 2006-06-20 2008-01-09 Vetco Gray Inc A localised electroplating system
GB2476405A (en) * 2006-06-20 2011-06-22 Vetco Gray Inc System, method and apparatus for continuous electroplating of elongated work pieces
GB2439807B (en) * 2006-06-20 2012-01-04 Vetco Gray Inc Apparatus for continuous electroplating of elongated workpieces
GB2476405B (en) * 2006-06-20 2012-01-11 Vetco Gray Inc Apparatus for continuous electroplating of elongated workpieces
US8101050B2 (en) 2006-06-20 2012-01-24 Vetco Gray Inc. System, method, and apparatus for continuous electroplating of elongated workpieces

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