ES472944A1 - Un procedimiento para extruir cuerpos huecos cerrados por unextremo - Google Patents

Un procedimiento para extruir cuerpos huecos cerrados por unextremo

Info

Publication number
ES472944A1
ES472944A1 ES472944A ES472944A ES472944A1 ES 472944 A1 ES472944 A1 ES 472944A1 ES 472944 A ES472944 A ES 472944A ES 472944 A ES472944 A ES 472944A ES 472944 A1 ES472944 A1 ES 472944A1
Authority
ES
Spain
Prior art keywords
hollow members
members sealed
moulding hollow
dolly
mandrel
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
Application number
ES472944A
Other languages
English (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.)
Vodafone GmbH
Original Assignee
Mannesmann 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 Mannesmann AG filed Critical Mannesmann AG
Publication of ES472944A1 publication Critical patent/ES472944A1/es
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/03—Making uncoated products by both direct and backward extrusion

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Press Drives And Press Lines (AREA)
  • Forging (AREA)

Abstract

Un procedimiento para extruir cuerpos huecos cerrados por un extremo con ayuda de un macho o mandril y un contra-macho, caracterizado porque primeramente se forma el fondo con contra-macho, caracterizado porque primeramente se forma el fondo con contra-macho mediante una extrusión hacia atrás en una etapa de trabajo ininterrumpida partiendo de un material en bruto macizo y a continuación se forma el cuerpo o envuelta mediante una etapa de extrusión hacia delante en deformación libre.
ES472944A 1977-09-27 1978-08-30 Un procedimiento para extruir cuerpos huecos cerrados por unextremo Expired ES472944A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2743894A DE2743894C2 (de) 1977-09-27 1977-09-27 Vorrichtung zum Pressen von einendig geschlossenen Hohlkörpern

Publications (1)

Publication Number Publication Date
ES472944A1 true ES472944A1 (es) 1979-02-16

Family

ID=6020240

Family Applications (1)

Application Number Title Priority Date Filing Date
ES472944A Expired ES472944A1 (es) 1977-09-27 1978-08-30 Un procedimiento para extruir cuerpos huecos cerrados por unextremo

Country Status (6)

Country Link
AT (1) AT359359B (es)
DE (1) DE2743894C2 (es)
ES (1) ES472944A1 (es)
FR (1) FR2403845A1 (es)
GB (1) GB2006075B (es)
IT (1) IT1098632B (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102513792A (zh) * 2011-12-28 2012-06-27 上海久丰汽车零件有限公司 一种汽车用油泵轴的冷挤压成型工艺
CN108927416B (zh) * 2018-07-09 2019-07-23 中国兵器工业第五九研究所 一种开放内型正反挤压复合成形方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1102764A (fr) * 1953-06-24 1955-10-25 Kellver A G Procédé et dispositif pour la fabrication de corps creux, sans soudure, ouverts d'un côté
FR1182801A (fr) * 1957-09-16 1959-06-30 Kabel Und Metallwerke Neumeyer Procédé et dispositif de fabrication de cylindres creux pour étançons hydrauliques de mines et étais télescopiques analogues
GB874193A (en) * 1958-07-15 1961-08-02 Hans Joachim Fuchs Method of forming hollow bodies by backward extrusion
US3186209A (en) * 1960-04-14 1965-06-01 Nat Machinery Co Method of cold forming an elongated hollow article
GB959289A (en) * 1960-10-07 1964-05-27 Burgess Norton Mfg Co Improvements in or relating to extrusion apparatus and methods of extrusion
DE1259182B (de) * 1962-01-18 1968-01-18 Bosch Gmbh Robert Vorrichtung zum Kaltpressen doppelnapffoermiger Zuendkerzengehaeuse
DE2107962A1 (de) * 1971-02-19 1972-08-31 Langenstein & Schemann Ag, 8630 Coburg Verfahren und Vorrichtung zur Herstellung einer Hülse aus einem Rohling mittels Vorwärtsfließpressen

Also Published As

Publication number Publication date
FR2403845A1 (fr) 1979-04-20
GB2006075B (en) 1982-03-17
AT359359B (de) 1980-11-10
IT7827611A0 (it) 1978-09-13
ATA515478A (de) 1980-03-15
IT1098632B (it) 1985-09-07
DE2743894C2 (de) 1985-06-27
DE2743894A1 (de) 1979-04-12
GB2006075A (en) 1979-05-02
FR2403845B1 (es) 1983-10-28

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19971201