FR2302152A1 - Prodn. of hollow bodies with base piece - has circular block first rolled with mandrel and ram and then without - Google Patents

Prodn. of hollow bodies with base piece - has circular block first rolled with mandrel and ram and then without

Info

Publication number
FR2302152A1
FR2302152A1 FR7605695A FR7605695A FR2302152A1 FR 2302152 A1 FR2302152 A1 FR 2302152A1 FR 7605695 A FR7605695 A FR 7605695A FR 7605695 A FR7605695 A FR 7605695A FR 2302152 A1 FR2302152 A1 FR 2302152A1
Authority
FR
France
Prior art keywords
ram
mandrel
prodn
rolled
hollow bodies
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
FR7605695A
Other languages
French (fr)
Other versions
FR2302152B3 (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
Mannesmannroehren Werke 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 Mannesmannroehren Werke AG filed Critical Mannesmannroehren Werke AG
Publication of FR2302152A1 publication Critical patent/FR2302152A1/en
Application granted granted Critical
Publication of FR2302152B3 publication Critical patent/FR2302152B3/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
    • B21B19/04—Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Forging (AREA)

Abstract

Prodn. of hollow bodies with a base piece by means of inclined rolling with mandrel and ram where the heated and centred circular block is first rolled with the mandrel and under the pressure of the ram and is then rolled without the mandrel and without the pressure of the ram. The rolling speed is reduced towards the end of the first rolling. A device to effect this prodn. procedure has equipment to control the ram and to open the mandrel thrust bearing according to the ram path.
FR7605695A 1975-02-26 1976-02-24 Prodn. of hollow bodies with base piece - has circular block first rolled with mandrel and ram and then without Granted FR2302152A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752508816 DE2508816A1 (en) 1975-02-26 1975-02-26 METHOD AND DEVICE FOR MANUFACTURING HOLLOW BODIES WITH A BOTTOM PIECE

Publications (2)

Publication Number Publication Date
FR2302152A1 true FR2302152A1 (en) 1976-09-24
FR2302152B3 FR2302152B3 (en) 1978-11-17

Family

ID=5940120

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7605695A Granted FR2302152A1 (en) 1975-02-26 1976-02-24 Prodn. of hollow bodies with base piece - has circular block first rolled with mandrel and ram and then without

Country Status (2)

Country Link
DE (1) DE2508816A1 (en)
FR (1) FR2302152A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101405096B (en) * 2006-03-31 2010-06-02 住友金属工业株式会社 Method for manufacturing seamless pipe

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109158422A (en) * 2018-08-06 2019-01-08 宁波大学 A kind of forming device for high-speed rail hole-bored axle from end to end

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101405096B (en) * 2006-03-31 2010-06-02 住友金属工业株式会社 Method for manufacturing seamless pipe

Also Published As

Publication number Publication date
FR2302152B3 (en) 1978-11-17
DE2508816A1 (en) 1976-09-09

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Legal Events

Date Code Title Description
ST Notification of lapse