FR2411042A1 - Rolled seamless tubes from pierced blanks - pass through multistage and continuous rolling trains for elongation - Google Patents

Rolled seamless tubes from pierced blanks - pass through multistage and continuous rolling trains for elongation

Info

Publication number
FR2411042A1
FR2411042A1 FR7834118A FR7834118A FR2411042A1 FR 2411042 A1 FR2411042 A1 FR 2411042A1 FR 7834118 A FR7834118 A FR 7834118A FR 7834118 A FR7834118 A FR 7834118A FR 2411042 A1 FR2411042 A1 FR 2411042A1
Authority
FR
France
Prior art keywords
rolling
multistage
elongation
pass
seamless tubes
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.)
Withdrawn
Application number
FR7834118A
Other languages
French (fr)
Inventor
Gerd Pfeiffer
Burkhard Schifferings
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 FR2411042A1 publication Critical patent/FR2411042A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B23/00—Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00, e.g. combined processes planetary tube rolling, auxiliary arrangements, e.g. lubricating, special tube blanks, continuous casting combined with tube rolling
    • 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
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
    • B21C1/24—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles by means of mandrels
    • B21C1/26—Push-bench drawing

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Metal Rolling (AREA)

Abstract

The seamless tubes are made of solid blocks by rolling. Hot blocks are pierced and stretched on rolling. The rolling plant has high yield of pipes with specified wall thickness and maximum pipe length. Directly in front of the final rolling machine is placed a multistage continuous longitudinal rolling train. The hot blocks are passed through inclined rolls directly after piercing. Continuous longitudinal rolling takes place directly after rolling plant with inclined rolls.
FR7834118A 1977-12-08 1978-12-04 Rolled seamless tubes from pierced blanks - pass through multistage and continuous rolling trains for elongation Withdrawn FR2411042A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772755058 DE2755058A1 (en) 1977-12-08 1977-12-08 METHOD OF MANUFACTURING SEAMLESS TUBES ON A BUTTON

Publications (1)

Publication Number Publication Date
FR2411042A1 true FR2411042A1 (en) 1979-07-06

Family

ID=6025770

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7834118A Withdrawn FR2411042A1 (en) 1977-12-08 1978-12-04 Rolled seamless tubes from pierced blanks - pass through multistage and continuous rolling trains for elongation

Country Status (4)

Country Link
JP (1) JPS5483664A (en)
DE (1) DE2755058A1 (en)
FR (1) FR2411042A1 (en)
IT (1) IT1099432B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0430909A2 (en) * 1989-11-30 1991-06-05 DALMINE S.p.A. Improved hot-rolling process for sealess tubes with preliminary diameter reduction of the semifinished products

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0430909A2 (en) * 1989-11-30 1991-06-05 DALMINE S.p.A. Improved hot-rolling process for sealess tubes with preliminary diameter reduction of the semifinished products
EP0430909A3 (en) * 1989-11-30 1991-10-02 Dalmine S.P.A. Improved hot-rolling process for sealess tubes with preliminary diameter reduction of the semifinished products

Also Published As

Publication number Publication date
IT1099432B (en) 1985-09-18
DE2755058A1 (en) 1979-06-13
IT7829046A0 (en) 1978-10-24
JPS5483664A (en) 1979-07-03

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Legal Events

Date Code Title Description
ST Notification of lapse