DE3273359D1 - Sintered metal body and method of making same - Google Patents

Sintered metal body and method of making same

Info

Publication number
DE3273359D1
DE3273359D1 DE8282304852T DE3273359T DE3273359D1 DE 3273359 D1 DE3273359 D1 DE 3273359D1 DE 8282304852 T DE8282304852 T DE 8282304852T DE 3273359 T DE3273359 T DE 3273359T DE 3273359 D1 DE3273359 D1 DE 3273359D1
Authority
DE
Germany
Prior art keywords
polymeric material
sintered metal
metal body
cured
impregnated
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
DE8282304852T
Other languages
German (de)
Inventor
Ricardo Gonzalez
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.)
Worcester Controls Corp
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 DE3273359D1 publication Critical patent/DE3273359D1/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
    • 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).
DE8282304852T 1982-09-14 1982-09-14 Sintered metal body and method of making same Expired DE3273359D1 (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
DE3273359D1 true DE3273359D1 (en) 1986-10-23

Family

ID=8189770

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8282304852T Expired DE3273359D1 (en) 1982-09-14 1982-09-14 Sintered metal body and method of making same

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
EP0103056A1 (en) 1984-03-21
ATE22242T1 (en) 1986-10-15
EP0103056B1 (en) 1986-09-17

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee