FR2435309A2 - Procede pour la fabrication de tubes en acier inoxydable ou d'articles similaires - Google Patents

Procede pour la fabrication de tubes en acier inoxydable ou d'articles similaires

Info

Publication number
FR2435309A2
FR2435309A2 FR7922250A FR7922250A FR2435309A2 FR 2435309 A2 FR2435309 A2 FR 2435309A2 FR 7922250 A FR7922250 A FR 7922250A FR 7922250 A FR7922250 A FR 7922250A FR 2435309 A2 FR2435309 A2 FR 2435309A2
Authority
FR
France
Prior art keywords
cold
stainless steel
prodn
product
cold working
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
FR7922250A
Other languages
English (en)
Other versions
FR2435309B2 (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.)
Granges Nyby AB
Original Assignee
Granges Nyby 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 Granges Nyby AB filed Critical Granges Nyby AB
Publication of FR2435309A2 publication Critical patent/FR2435309A2/fr
Application granted granted Critical
Publication of FR2435309B2 publication Critical patent/FR2435309B2/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
    • B22F3/1208—Containers or coating used therefor
    • 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
    • B22F3/20—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by extruding

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)
  • Lubricants (AREA)
  • Powder Metallurgy (AREA)

Abstract

Procédé de post-traitement de tubes extrudés en acier inoxydable fabriqués par un procédé de métallurgie des poudres. On traite par l'acide sulfurique aqueux les tubes extrudés encore enveloppés de la capsule afin d'éliminer pratiquement le verre encore présent à leur surface, on les travaille ensuite à froid par étirage ou laminage à pas de pèlerin et, seulement après le travail à froid, on les recuit en atmosphère oxydante. Application à une fabrication plus simple et moins coûteuse de tubes extrudés, notamment en acier inoxydable.
FR7922250A 1978-09-06 1979-09-05 Procede pour la fabrication de tubes en acier inoxydable ou d'articles similaires Granted FR2435309A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782838850 DE2838850C2 (de) 1978-09-06 1978-09-06 Verfahren zum Herstellen kaltverformter Rohre aus auf pulvermetallurgischem Weg erzeugten stranggepreßten rostfreien Stahlrohren

Publications (2)

Publication Number Publication Date
FR2435309A2 true FR2435309A2 (fr) 1980-04-04
FR2435309B2 FR2435309B2 (fr) 1983-06-03

Family

ID=6048817

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7922250A Granted FR2435309A2 (fr) 1978-09-06 1979-09-05 Procede pour la fabrication de tubes en acier inoxydable ou d'articles similaires

Country Status (5)

Country Link
BE (1) BE878611R (fr)
DE (1) DE2838850C2 (fr)
ES (1) ES483952A2 (fr)
FR (1) FR2435309A2 (fr)
RO (1) RO78382A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2533468A1 (fr) * 1982-09-23 1984-03-30 Nyby Uddeholm Ab Capsule pour ebauches servant a l'extrusion de pieces, notamment de tubes
FR2542228A1 (fr) * 1983-03-10 1984-09-14 Cegedur Procede de frittage sous pression de poudres d'alliages d'aluminium

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104741612A (zh) * 2014-11-26 2015-07-01 内蒙古北方重工业集团有限公司 粉末高温合金棒挤压方法
CN114273500B (zh) * 2021-12-09 2023-09-29 中航贵州飞机有限责任公司 一种橡皮囊液压成形用柔性增压块的使用方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE553992A (fr) *
FR2168401A1 (fr) * 1972-01-17 1973-08-31 Int Nickel Ltd
US3798740A (en) * 1972-10-02 1974-03-26 Davy Ashmore Ltd Method of extruding a porous compacted mass of metal powder having a sealed outer surface

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2419014C3 (de) * 1974-04-19 1985-08-01 Nyby Bruks AB, Nybybruk Verfahren zum Herstellen von Rohren aus rostfreiem Stahl und Anwendung des Verfahrens auf das Herstellen von Verbundrohren

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE553992A (fr) *
FR2168401A1 (fr) * 1972-01-17 1973-08-31 Int Nickel Ltd
US3798740A (en) * 1972-10-02 1974-03-26 Davy Ashmore Ltd Method of extruding a porous compacted mass of metal powder having a sealed outer surface

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2533468A1 (fr) * 1982-09-23 1984-03-30 Nyby Uddeholm Ab Capsule pour ebauches servant a l'extrusion de pieces, notamment de tubes
FR2542228A1 (fr) * 1983-03-10 1984-09-14 Cegedur Procede de frittage sous pression de poudres d'alliages d'aluminium
EP0119939A1 (fr) * 1983-03-10 1984-09-26 Cegedur Societe De Transformation De L'aluminium Pechiney Procédé de frittage sous pression de poudres d'alliages d'aluminium

Also Published As

Publication number Publication date
BE878611R (fr) 1979-12-31
DE2838850C2 (de) 1983-12-15
FR2435309B2 (fr) 1983-06-03
ES483952A2 (es) 1980-10-01
DE2838850A1 (de) 1980-03-27
RO78382A (fr) 1982-02-26

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