ATE22242T1 - METALLIC SINTERED BODY AND PROCESS FOR ITS PRODUCTION. - Google Patents

METALLIC SINTERED BODY AND PROCESS FOR ITS PRODUCTION.

Info

Publication number
ATE22242T1
ATE22242T1 AT82304852T AT82304852T ATE22242T1 AT E22242 T1 ATE22242 T1 AT E22242T1 AT 82304852 T AT82304852 T AT 82304852T AT 82304852 T AT82304852 T AT 82304852T AT E22242 T1 ATE22242 T1 AT E22242T1
Authority
AT
Austria
Prior art keywords
polymeric material
cured
sintered metal
impregnated
exterior surfaces
Prior art date
Application number
AT82304852T
Other languages
German (de)
Inventor
Ricardo Gonzalez
Original Assignee
Worcester Controls 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 Worcester Controls Corp filed Critical Worcester Controls Corp
Application granted granted Critical
Publication of ATE22242T1 publication Critical patent/ATE22242T1/en

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
    • 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

Landscapes

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

Abstract

A sintered metal body, having an annular form suitable for use as a valve seat or seal, is impregnated (13) with an uncured polymeric material such as PTFE which is then cured to partially fill the interparticulate spaces in the sintered metal body. The impregnated body is then subjected to applied pressure (16) which preserves the annular shape of the body while collapsing substantially all voids throughout the body to cause the cured polymeric material within the sintered metal body to completely fill the collapsed interparticulate spaces thereby to render the body nonporous throughout. In as much as the interparticulate spaces are completely filled with cured polymeric material, any increases in temperature of the body which result in an expansion of the polymeric material cause a migration of portions of that material from the inferior of the body to the exterior surfaces of the body to lubricate the exterior surfaces. The body may, in addition, be completely covered by another layer of cured polymeric material to give the seat additional initial lubricity (17).
AT82304852T 1982-09-14 1982-09-14 METALLIC SINTERED BODY AND PROCESS FOR ITS PRODUCTION. ATE22242T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP82304852A EP0103056B1 (en) 1982-09-14 1982-09-14 Sintered metal body and method of making same

Publications (1)

Publication Number Publication Date
ATE22242T1 true ATE22242T1 (en) 1986-10-15

Family

ID=8189770

Family Applications (1)

Application Number Title Priority Date Filing Date
AT82304852T ATE22242T1 (en) 1982-09-14 1982-09-14 METALLIC SINTERED BODY AND PROCESS FOR ITS PRODUCTION.

Country Status (3)

Country Link
EP (1) EP0103056B1 (en)
AT (1) ATE22242T1 (en)
DE (1) DE3273359D1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109676141B (en) * 2017-12-06 2020-10-23 全亿大科技（佛山）有限公司 Manufacturing method of special-shaped complex metal product and special-shaped complex metal product

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB674056A (en) * 1948-11-16 1952-06-18 Edras Soc Manufacture of self-lubricating metallic bodies by sintering metallic powders
US2838829A (en) * 1956-09-05 1958-06-17 Toefco Engineering Company Method of making bearings
US3592440A (en) * 1969-10-16 1971-07-13 Hills Mccanna Co Ball valve

Also Published As

Publication number Publication date
DE3273359D1 (en) 1986-10-23
EP0103056A1 (en) 1984-03-21
EP0103056B1 (en) 1986-09-17

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee