GB518267A - Porous metal objects and method of making same - Google Patents

Porous metal objects and method of making same

Info

Publication number
GB518267A
GB518267A GB24032/38A GB2403238A GB518267A GB 518267 A GB518267 A GB 518267A GB 24032/38 A GB24032/38 A GB 24032/38A GB 2403238 A GB2403238 A GB 2403238A GB 518267 A GB518267 A GB 518267A
Authority
GB
United Kingdom
Prior art keywords
porous metal
aug
tin
zinc
copper
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
GB24032/38A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB518267A publication Critical patent/GB518267A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/72—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material
    • F42B12/74—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the core or solid body
    • 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
    • B22F3/1143—Making porous workpieces or articles involving an oxidation, reduction or reaction step

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Powder Metallurgy (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

518,267. Porous metal bodies. TIETIG, C. Aug. 15, 1938, No. 24032. Convention date, Aug. 30, 1937. [Class 82 (i)] [Also in Groups V and XXI] In a process for making porous metal objects such as bullets, bearings, and bushings, finelydivided metal powder is mixed with an easilyreducible metal oxide; the object is formed from the mixture under high pressure, and is sintered in a reducing atmosphere while its shape is preserved. The oxide may comprise the oxides of copper, tin, zinc, cadmium, and lead (including white-lead) and the metals may be copper, tin, and zinc. Up to 6 per cent. of a lubricant such as oil, graphite, or aluminium may be included. The powdered starting materials should pass through a 200-mesh screen, the forming-pressure may be 12,000- 25,000 lbs. per square inch, and the sintering should take place at a temperature not exceeding 1,700‹C., in hydrogen or natural or artificial city-gas. The object may be machined. before or after being impregnated with hot or cold lubricant, the impregnation being effected, if desired, under reduced pressure. The Specification as open to inspection under Sect. 91 refers also to silver as one of the constituents. This subject-matter does not appear in the Specification as accepted.
GB24032/38A 1937-08-30 1938-08-15 Porous metal objects and method of making same Expired GB518267A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US518267XA 1937-08-30 1937-08-30

Publications (1)

Publication Number Publication Date
GB518267A true GB518267A (en) 1940-02-22

Family

ID=21973595

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24032/38A Expired GB518267A (en) 1937-08-30 1938-08-15 Porous metal objects and method of making same

Country Status (1)

Country Link
GB (1) GB518267A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2434113A (en) * 1945-07-18 1948-01-06 Henry W F Lorenz Selective adsorption of lubricants
US2461410A (en) * 1945-09-24 1949-02-08 Magnavox Co Porous electrode for electrolytic cells
EP0842389A2 (en) * 1995-08-03 1998-05-20 Federal-Hoffman, Inc., D.B.A. Federal Cartridge Co. Non-toxic frangible bullet
EP0908695A1 (en) * 1992-04-02 1999-04-14 Olin Corporation Full metal jacket hollow point bullet

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2434113A (en) * 1945-07-18 1948-01-06 Henry W F Lorenz Selective adsorption of lubricants
US2461410A (en) * 1945-09-24 1949-02-08 Magnavox Co Porous electrode for electrolytic cells
EP0908695A1 (en) * 1992-04-02 1999-04-14 Olin Corporation Full metal jacket hollow point bullet
EP0842389A2 (en) * 1995-08-03 1998-05-20 Federal-Hoffman, Inc., D.B.A. Federal Cartridge Co. Non-toxic frangible bullet
EP0842389A4 (en) * 1995-08-03 2001-03-14 Federal Hoffman Inc D B A Fed Non-toxic frangible bullet

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