GB580262A - Improvements in the manufacture of metal articles from powdered materials - Google Patents

Improvements in the manufacture of metal articles from powdered materials

Info

Publication number
GB580262A
GB580262A GB807844A GB807844A GB580262A GB 580262 A GB580262 A GB 580262A GB 807844 A GB807844 A GB 807844A GB 807844 A GB807844 A GB 807844A GB 580262 A GB580262 A GB 580262A
Authority
GB
United Kingdom
Prior art keywords
manufacture
chemical treatment
articles
electro
machining
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
GB807844A
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.)
BRITISH PISTON RING Co LT
JOHN ALAN JUDD
THOMAS RALPH TWIGGER
Original Assignee
BRITISH PISTON RING Co LT
JOHN ALAN JUDD
THOMAS RALPH TWIGGER
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 BRITISH PISTON RING Co LT, JOHN ALAN JUDD, THOMAS RALPH TWIGGER filed Critical BRITISH PISTON RING Co LT
Priority to GB807844A priority Critical patent/GB580262A/en
Publication of GB580262A publication Critical patent/GB580262A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B22F3/26—Impregnating

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)

Abstract

In a method of manufacture of articles by powder metallurgy including pressing and sintering followed by machining, the surface porosity after machining is restored by subjecting the machined surface to chemical or electro - chemical treatment. The electro - chemical treatment may be anodising, whilst the chemical treatment may be etching or pickling with an organic or inorganic acid, followed by neutralising and washing. The article may then be impregnated with an oil either by pressure or by heating and then immersing in a cool impregnating substance. Examples of articles are piston rings, valve and tappet guides, bearing bushes and cylinder inserts.
GB807844A 1944-04-29 1944-04-29 Improvements in the manufacture of metal articles from powdered materials Expired GB580262A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB807844A GB580262A (en) 1944-04-29 1944-04-29 Improvements in the manufacture of metal articles from powdered materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB807844A GB580262A (en) 1944-04-29 1944-04-29 Improvements in the manufacture of metal articles from powdered materials

Publications (1)

Publication Number Publication Date
GB580262A true GB580262A (en) 1946-09-02

Family

ID=9845346

Family Applications (1)

Application Number Title Priority Date Filing Date
GB807844A Expired GB580262A (en) 1944-04-29 1944-04-29 Improvements in the manufacture of metal articles from powdered materials

Country Status (1)

Country Link
GB (1) GB580262A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2561579A (en) * 1947-10-02 1951-07-24 Gen Motors Corp Impregnated ferrous gear

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2561579A (en) * 1947-10-02 1951-07-24 Gen Motors Corp Impregnated ferrous gear

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