FR2258239A1 - Iron, nickel or cobalt alloy semi-finished prods. - obtd. by power compaction in presence of oxygen getter - Google Patents

Iron, nickel or cobalt alloy semi-finished prods. - obtd. by power compaction in presence of oxygen getter

Info

Publication number
FR2258239A1
FR2258239A1 FR7501052A FR7501052A FR2258239A1 FR 2258239 A1 FR2258239 A1 FR 2258239A1 FR 7501052 A FR7501052 A FR 7501052A FR 7501052 A FR7501052 A FR 7501052A FR 2258239 A1 FR2258239 A1 FR 2258239A1
Authority
FR
France
Prior art keywords
oxygen
obtd
alloy
nickel
iron
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.)
Withdrawn
Application number
FR7501052A
Other languages
French (fr)
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.)
Uddeholms AB
Original Assignee
Uddeholms AB
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
Priority claimed from GB2274/74A external-priority patent/GB1479312A/en
Application filed by Uddeholms AB filed Critical Uddeholms AB
Publication of FR2258239A1 publication Critical patent/FR2258239A1/en
Withdrawn legal-status Critical Current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
    • 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
    • B22F3/12—Both compacting and sintering
    • B22F3/1208—Containers or coating used therefor
    • B22F3/1216—Container composition
    • 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
    • B22F3/17—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by forging
    • B22F3/172—Continuous compaction, e.g. rotary hammering

Landscapes

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

Abstract

Rods and semi-finished products of Fe, Ni or Co based alloy are made by a powder metallurgy method by providing adjacent the inner walls of a hollow container a reducing material which has the capacity to bind with oxygen to form a solid compound greater than the material of the alloy. The container is filled with alloy powder in which there is included an oxygen carrier and hermetically sealed. The container is heated to 900-1200 degrees C and forged. During this stage the oxygen carrier combines with oxygen in the alloy powders, diffuses into the layer of reducing material and there gives up its oxygen to the reducing material. A non-porous coherent product is obtd. without recourse to vacuum apparatus or the need to use a starting powder of very low oxygen content.
FR7501052A 1974-01-17 1975-01-15 Iron, nickel or cobalt alloy semi-finished prods. - obtd. by power compaction in presence of oxygen getter Withdrawn FR2258239A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2274/74A GB1479312A (en) 1974-01-17 1974-01-17 Method of forging alloy powders
GB1461074 1974-04-02

Publications (1)

Publication Number Publication Date
FR2258239A1 true FR2258239A1 (en) 1975-08-18

Family

ID=26237412

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7501052A Withdrawn FR2258239A1 (en) 1974-01-17 1975-01-15 Iron, nickel or cobalt alloy semi-finished prods. - obtd. by power compaction in presence of oxygen getter

Country Status (3)

Country Link
DE (1) DE2501409A1 (en)
FR (1) FR2258239A1 (en)
SE (1) SE7500469L (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2598949A1 (en) * 1986-05-23 1987-11-27 Centre Nat Rech Scient PROCESS FOR THE PREPARATION OF FINALLY DIVIDED CRYSTALS FROM A METAL ALLOY, IN PARTICULAR FOR THE PREPARATION OF PERMANENT MAGNETS
EP0250322A2 (en) * 1986-06-17 1987-12-23 Sumitomo Electric Industries Limited Method for producing an elongated sintered article
WO1992001526A1 (en) * 1990-07-20 1992-02-06 Carpenter Technology Corporation Process for making clad articles and article made thereby
US5252288A (en) * 1986-06-17 1993-10-12 Sumitomo Electric Industries, Inc. Method for producing an elongated sintered article

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2598949A1 (en) * 1986-05-23 1987-11-27 Centre Nat Rech Scient PROCESS FOR THE PREPARATION OF FINALLY DIVIDED CRYSTALS FROM A METAL ALLOY, IN PARTICULAR FOR THE PREPARATION OF PERMANENT MAGNETS
WO1987007425A1 (en) * 1986-05-23 1987-12-03 Centre National De La Recherche Scientifique (Cnrs Method for the preparation of permanent magnets by division of crystals
US5055142A (en) * 1986-05-23 1991-10-08 Centre National De La Recherche Scientifique Process for preparing permanent magnets by division of crystals
EP0250322A2 (en) * 1986-06-17 1987-12-23 Sumitomo Electric Industries Limited Method for producing an elongated sintered article
EP0250322A3 (en) * 1986-06-17 1989-11-15 Sumitomo Electric Industries Limited Method for producing an elongated sintered article
US5252288A (en) * 1986-06-17 1993-10-12 Sumitomo Electric Industries, Inc. Method for producing an elongated sintered article
WO1992001526A1 (en) * 1990-07-20 1992-02-06 Carpenter Technology Corporation Process for making clad articles and article made thereby

Also Published As

Publication number Publication date
SE7500469L (en) 1975-07-18
DE2501409A1 (en) 1975-07-24

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Legal Events

Date Code Title Description
ST Notification of lapse