GB812659A - Improvements in or relating to the coating of metal articles with aluminium - Google Patents

Improvements in or relating to the coating of metal articles with aluminium

Info

Publication number
GB812659A
GB812659A GB23731/57A GB2373157A GB812659A GB 812659 A GB812659 A GB 812659A GB 23731/57 A GB23731/57 A GB 23731/57A GB 2373157 A GB2373157 A GB 2373157A GB 812659 A GB812659 A GB 812659A
Authority
GB
United Kingdom
Prior art keywords
valves
inches
article
induction
aluminium
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
GB23731/57A
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.)
Motors Liquidation Co
Original Assignee
Motors Liquidation Co
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 Motors Liquidation Co filed Critical Motors Liquidation Co
Publication of GB812659A publication Critical patent/GB812659A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/18—After-treatment
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material
    • C23C4/067—Metallic material containing free particles of non-metal elements, e.g. carbon, silicon, boron, phosphorus or arsenic

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • General Induction Heating (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

812,659. Coating with aluminium; alloys. GENERAL MOTORS CORPORATION. July 26, 1957 [Aug. 13, 1956], No. 23731/57. Classes 82(1) and 82(2) At least part of a metal article (e.g. a poppet valve for an I.C. engine) is preheated (e.g. to a temperature of 200‹-600‹F.) by induction heating, the heated part is sprayed with molten Al (or an alloy containing at least 80 per cent Al), and the coated part is then heated (e.g. to a temperature of 1425‹- 1625‹F.) by induction heating so as to cause diffusion of the Al into the metal of the article to a depth not greater than 0.0015 inches (preferably 0.00005-0.0015 inches). The thickness of the coated layer is preferably not greater than 0.004 inches, and during the initial and final heatings the article may be rotated (e.g. at 400- 600 r.p.m.). As shown, a conveyer rotates and simultaneously moves a row of poppet valves 10 past an induction preheater 30, an oxy-acetylene spray gun 35 for Al wire 36, and an induction heater 32. The heaters 30, 32 preferably operate at 9,600-45,000 cycles per second, and they comprise bar-type coils having portions 34, 40 above the heads of the valves and a pair of portions 37, 42 below the heads of the valves and on opposite sides of the valve stems. The valves may be of the following compositions in percentages by weight:
GB23731/57A 1956-08-13 1957-07-26 Improvements in or relating to the coating of metal articles with aluminium Expired GB812659A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US812659XA 1956-08-13 1956-08-13

Publications (1)

Publication Number Publication Date
GB812659A true GB812659A (en) 1959-04-29

Family

ID=22163100

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23731/57A Expired GB812659A (en) 1956-08-13 1957-07-26 Improvements in or relating to the coating of metal articles with aluminium

Country Status (1)

Country Link
GB (1) GB812659A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2313382A (en) * 1996-05-23 1997-11-26 Vidal Henri Brevets Metal coating

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2313382A (en) * 1996-05-23 1997-11-26 Vidal Henri Brevets Metal coating

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