GB391155A - Porous metal and process of producing same - Google Patents

Porous metal and process of producing same

Info

Publication number
GB391155A
GB391155A GB2845131A GB2845131A GB391155A GB 391155 A GB391155 A GB 391155A GB 2845131 A GB2845131 A GB 2845131A GB 2845131 A GB2845131 A GB 2845131A GB 391155 A GB391155 A GB 391155A
Authority
GB
United Kingdom
Prior art keywords
stearic acid
briquettes
moulded
article
electric current
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
GB2845131A
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.)
Manganese Bronze & Brass Compa
Original Assignee
Manganese Bronze & Brass Compa
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 Manganese Bronze & Brass Compa filed Critical Manganese Bronze & Brass Compa
Priority to GB2845131A priority Critical patent/GB391155A/en
Publication of GB391155A publication Critical patent/GB391155A/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
    • B22F3/10—Sintering only
    • B22F3/11—Making porous workpieces or articles
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

Porous metal articles such as bearings, brake linings, and brushes for dynamo-electric machines, are made from briquettes, moulded from an intimate mixture of powdered sponge iron and a volatile lubricant, and sintered by an electric current in a reducing or inert atmosphere such as hydrogen, helium, or illuminating gas. In an example, sponge iron produced by the reduction of ferric oxide, is mixed with 2-5 per cent of stearic acid, preferably dissolved in volatile solvent such as ether which is allowed to volatilize prior to briquetting. The article to be produced is moulded at high pressure and then heated by passing an electric current, primary or induced, through the article. The stearic acid which prevents the formation of metallic oxides and reduces the push-out pressure from the mould is driven off before the sintering temperature is reached. Palmitic, oleic, or other fatty acids, or lubricating oil may be used in place of stearic acid. To cool the briquettes after sintering, and prevent their oxidation, they are removed from the heating furnace and immediately quenched in oil. Specification 365,068 is referred to.
GB2845131A 1931-10-13 1931-10-13 Porous metal and process of producing same Expired GB391155A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2845131A GB391155A (en) 1931-10-13 1931-10-13 Porous metal and process of producing same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2845131A GB391155A (en) 1931-10-13 1931-10-13 Porous metal and process of producing same

Publications (1)

Publication Number Publication Date
GB391155A true GB391155A (en) 1933-04-13

Family

ID=10275825

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2845131A Expired GB391155A (en) 1931-10-13 1931-10-13 Porous metal and process of producing same

Country Status (1)

Country Link
GB (1) GB391155A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741535C (en) * 1936-11-01 1943-11-12 Hans Vogt Hardening of sliding bodies pressed from iron powder by treatment with gaseous diffusion substances
US3031990A (en) * 1957-07-03 1962-05-01 Anker Phoenix Nahmaschinen Ag Self lubricating needle bar oscillator frame
CN106660118A (en) * 2014-05-23 2017-05-10 霍加纳斯股份有限公司 New product

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741535C (en) * 1936-11-01 1943-11-12 Hans Vogt Hardening of sliding bodies pressed from iron powder by treatment with gaseous diffusion substances
US3031990A (en) * 1957-07-03 1962-05-01 Anker Phoenix Nahmaschinen Ag Self lubricating needle bar oscillator frame
CN106660118A (en) * 2014-05-23 2017-05-10 霍加纳斯股份有限公司 New product
CN106660118B (en) * 2014-05-23 2019-05-21 霍加纳斯股份有限公司 New product

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