FR2398567A1 - Metal powder prodn. - by atomising molten metal stream through pressurised agent jets and collecting droplets in reducing fluid - Google Patents

Metal powder prodn. - by atomising molten metal stream through pressurised agent jets and collecting droplets in reducing fluid

Info

Publication number
FR2398567A1
FR2398567A1 FR7722704A FR7722704A FR2398567A1 FR 2398567 A1 FR2398567 A1 FR 2398567A1 FR 7722704 A FR7722704 A FR 7722704A FR 7722704 A FR7722704 A FR 7722704A FR 2398567 A1 FR2398567 A1 FR 2398567A1
Authority
FR
France
Prior art keywords
metal powder
reducing fluid
molten metal
pressurised
collecting droplets
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.)
Granted
Application number
FR7722704A
Other languages
French (fr)
Other versions
FR2398567B1 (en
Inventor
Ulf Rutger Larson
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.)
Rutger Larson Konsult AB
Original Assignee
Rutger Larson Konsult 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
Application filed by Rutger Larson Konsult AB filed Critical Rutger Larson Konsult AB
Priority to FR7722704A priority Critical patent/FR2398567A1/en
Publication of FR2398567A1 publication Critical patent/FR2398567A1/en
Application granted granted Critical
Publication of FR2398567B1 publication Critical patent/FR2398567B1/fr
Granted 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • B22F2009/086—Cooling after atomisation
    • B22F2009/0864—Cooling after atomisation by oil, other non-aqueous fluid or fluid-bed cooling
    • 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

Abstract

Metal powder is produced in an enclosed granulation chamber with a reducing liquid in the lower part and a reducing gas atmosphere filling the upper part. Metal is poured in the molten state and intersected by streams of pressurised atomising agents. The metal particles are chilled in the gas atmosphere and collected in the reducing liquid. This enables a fine-grained product to be produced which has an extremely low oxygen content. The process is much cheaper than one using nitrogen or argon for the atomisation.
FR7722704A 1977-07-25 1977-07-25 Metal powder prodn. - by atomising molten metal stream through pressurised agent jets and collecting droplets in reducing fluid Granted FR2398567A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7722704A FR2398567A1 (en) 1977-07-25 1977-07-25 Metal powder prodn. - by atomising molten metal stream through pressurised agent jets and collecting droplets in reducing fluid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7722704A FR2398567A1 (en) 1977-07-25 1977-07-25 Metal powder prodn. - by atomising molten metal stream through pressurised agent jets and collecting droplets in reducing fluid

Publications (2)

Publication Number Publication Date
FR2398567A1 true FR2398567A1 (en) 1979-02-23
FR2398567B1 FR2398567B1 (en) 1982-12-31

Family

ID=9193733

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7722704A Granted FR2398567A1 (en) 1977-07-25 1977-07-25 Metal powder prodn. - by atomising molten metal stream through pressurised agent jets and collecting droplets in reducing fluid

Country Status (1)

Country Link
FR (1) FR2398567A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2500483A1 (en) * 1981-02-24 1982-08-27 Sumitomo Metal Ind OIL-ATOMIZED LOW-ALLOY STEEL POWDER AND PROCESS FOR PRODUCING THE SAME
FR2705261A1 (en) * 1993-05-14 1994-11-25 Norsk Hydro As Method and apparatus for producing granules of a reactive metal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2500483A1 (en) * 1981-02-24 1982-08-27 Sumitomo Metal Ind OIL-ATOMIZED LOW-ALLOY STEEL POWDER AND PROCESS FOR PRODUCING THE SAME
FR2705261A1 (en) * 1993-05-14 1994-11-25 Norsk Hydro As Method and apparatus for producing granules of a reactive metal

Also Published As

Publication number Publication date
FR2398567B1 (en) 1982-12-31

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Legal Events

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