FR2300642A1 - Sintering metal powders such as iron - using pressure and temp. cycling round structural transformation point to create superplasticity - Google Patents

Sintering metal powders such as iron - using pressure and temp. cycling round structural transformation point to create superplasticity

Info

Publication number
FR2300642A1
FR2300642A1 FR7504168A FR7504168A FR2300642A1 FR 2300642 A1 FR2300642 A1 FR 2300642A1 FR 7504168 A FR7504168 A FR 7504168A FR 7504168 A FR7504168 A FR 7504168A FR 2300642 A1 FR2300642 A1 FR 2300642A1
Authority
FR
France
Prior art keywords
temp
compact
pressure
transformation point
superplasticity
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
FR7504168A
Other languages
French (fr)
Other versions
FR2300642B1 (en
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to FR7504168A priority Critical patent/FR2300642A1/en
Publication of FR2300642A1 publication Critical patent/FR2300642A1/en
Application granted granted Critical
Publication of FR2300642B1 publication Critical patent/FR2300642B1/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
    • 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
    • B22F3/16—Both compacting and sintering in successive or repeated steps

Landscapes

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

Abstract

Process for mfg. a sintered object or compact, the novelty being that a metal powder is sintered with the creating or the control of superplastic phenomena, by subjecting the compact to a temp. cycle which passes through the transformation point of the metal powder while pressure is simultaneously applied to the compact. The process can be employed with a metal powder contg. one or more constituents and sintered below its m. pt. for a short time which can be undertaken in air as a controlled atmos. is not essential to prevent oxidn. The process is used e.g. for the mfr. of heat-exchanger panels, cores for heating pipes, extremely hard gear wheels etc. The porosity of the compact and also its density can be controlled.
FR7504168A 1975-02-11 1975-02-11 Sintering metal powders such as iron - using pressure and temp. cycling round structural transformation point to create superplasticity Granted FR2300642A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7504168A FR2300642A1 (en) 1975-02-11 1975-02-11 Sintering metal powders such as iron - using pressure and temp. cycling round structural transformation point to create superplasticity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7504168A FR2300642A1 (en) 1975-02-11 1975-02-11 Sintering metal powders such as iron - using pressure and temp. cycling round structural transformation point to create superplasticity

Publications (2)

Publication Number Publication Date
FR2300642A1 true FR2300642A1 (en) 1976-09-10
FR2300642B1 FR2300642B1 (en) 1981-02-27

Family

ID=9151034

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7504168A Granted FR2300642A1 (en) 1975-02-11 1975-02-11 Sintering metal powders such as iron - using pressure and temp. cycling round structural transformation point to create superplasticity

Country Status (1)

Country Link
FR (1) FR2300642A1 (en)

Also Published As

Publication number Publication date
FR2300642B1 (en) 1981-02-27

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Legal Events

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