US1882972A - Production of shaped metallic articles - Google Patents

Production of shaped metallic articles Download PDF

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Publication number
US1882972A
US1882972A US519246A US51924631A US1882972A US 1882972 A US1882972 A US 1882972A US 519246 A US519246 A US 519246A US 51924631 A US51924631 A US 51924631A US 1882972 A US1882972 A US 1882972A
Authority
US
United States
Prior art keywords
production
shaped
articles
shaped metallic
sintered
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 - Lifetime
Application number
US519246A
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English (en)
Inventor
Schlecht Leo
Schubardt Walter
Duftschmid Franz
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Application granted granted Critical
Publication of US1882972A publication Critical patent/US1882972A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the present invention relates to the pro sinter mould, especially when this is construct duction of shaped articles from metal powders by sintering by the action of heat.
  • the greatest longitudinal direction or one of the greatest longitudinal directions of the shaped article is arranged vertically during the sintering according to the present invention.
  • the further advantage is obplace very uniformly throughout the whole mass, while when carrying out the sintering in any other spatial position a great part of the sintered mass lies for example on the bottom of the furnace which is usually cooler, so that the mass is heated non-uniformly or insuficiently.
  • Ewample A mixture of 100 partsof iron owder containing 1.2 per cent of carbon an' 1.5 per cent of oxygen obtained by the thermal decomposition of iron carbonyl and 1 part of flaky ferric oxide obtained by burning iron can bony] is charged into a sheet iron mould having the dimensions 55 by 152 by 220 millimetres which has been painted on the inside with a chamotte powder paste rich in alumina.
  • the filled sheet iron mould, open at the top, is arranged with the longest edge vertical, that is with the surface 55 by 152 millimetres horizontally disposed, in an electrically heat ed annealing furnace and heated to 1000 C. or three hours, whereby vigorous evolution of gas and shrinkage takes place.
  • a sintered block of ahomogeneous nature quite free from cracks, which block may be readily removed from the sheet mould and which by rolling may be worked up into a sheet metal free from objection, is obtained.
  • the step which comprises arranging the uncompressed metal powder to be sintered in such a spatial position that the direction of the shaped article in which the shrinkage during the sintering is greatest, is about vertical.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)
  • Compositions Of Oxide Ceramics (AREA)
US519246A 1930-03-06 1931-02-28 Production of shaped metallic articles Expired - Lifetime US1882972A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE564253T 1930-03-06
GB25026/30A GB354562A (en) 1930-03-06 1930-08-21 Improvements in the manufacture and production of shaped articles from metal powders

Publications (1)

Publication Number Publication Date
US1882972A true US1882972A (en) 1932-10-18

Family

ID=34575196

Family Applications (1)

Application Number Title Priority Date Filing Date
US519246A Expired - Lifetime US1882972A (en) 1930-03-06 1931-02-28 Production of shaped metallic articles

Country Status (3)

Country Link
US (1) US1882972A (de)
DE (1) DE564253C (de)
GB (1) GB354562A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2561583A (en) * 1941-05-15 1951-07-24 Gen Motors Corp Method of making articles from metal powder
US2679683A (en) * 1949-12-15 1954-06-01 Gen Motors Corp Porous metal element
US2798809A (en) * 1952-06-09 1957-07-09 Sintercast Corp America Methods of infiltrating high melting skeleton bodies
US3126294A (en) * 1964-03-24 Mold release material

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126294A (en) * 1964-03-24 Mold release material
US2561583A (en) * 1941-05-15 1951-07-24 Gen Motors Corp Method of making articles from metal powder
US2679683A (en) * 1949-12-15 1954-06-01 Gen Motors Corp Porous metal element
US2798809A (en) * 1952-06-09 1957-07-09 Sintercast Corp America Methods of infiltrating high melting skeleton bodies

Also Published As

Publication number Publication date
GB354562A (en) 1931-08-13
DE564253C (de) 1932-11-17

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