GB382878A - Process and apparatus for the production of metal tubes with inwardly thickened ends - Google Patents

Process and apparatus for the production of metal tubes with inwardly thickened ends

Info

Publication number
GB382878A
GB382878A GB11105/32A GB1110532A GB382878A GB 382878 A GB382878 A GB 382878A GB 11105/32 A GB11105/32 A GB 11105/32A GB 1110532 A GB1110532 A GB 1110532A GB 382878 A GB382878 A GB 382878A
Authority
GB
United Kingdom
Prior art keywords
rolled
stop
mandrel
tube
blank
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
GB11105/32A
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
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 Mannesmannroehren Werke AG, Mannesmann AG filed Critical Mannesmannroehren Werke AG
Publication of GB382878A publication Critical patent/GB382878A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B21/00—Pilgrim-step tube-rolling, i.e. pilger mills

Abstract

382,878. Rolling tubes. MANNESMANNRÍHRENWERKE, 1B, Berger Ufer, D³sseldorf, Germany. April 18, 1932, No. 11105. Convention date, April 20, 1931. [Class 83 (iv).] Mandrels.-In rolling a tube with an internally thickened portion at one end, the rear end of the hollow blank bears against a detachable stop while the thickened portion is rolled on a reduced portion of the mandrel, the stop being removed while the transitional and thinner portions of the tube are rolled. A blank b bears against a stop c comprising a number of segments while the thicker portion is rolled by pilger rolls e on the reduced end a<1> of the mandrel, the stop being removed and the end of the blank allowed to move into contact with the holder d while the transitional portion j and the thinner portion of the tube are rolled. The stop c may be replaced by a collar which may be secured at an intermediate portion of the mandrel while the thicker portion is being rolled, and then released to move back against the holder d during the subsequent steps of the operation.
GB11105/32A 1931-04-20 1932-04-18 Process and apparatus for the production of metal tubes with inwardly thickened ends Expired GB382878A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE382878X 1931-04-20

Publications (1)

Publication Number Publication Date
GB382878A true GB382878A (en) 1932-11-03

Family

ID=6361536

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11105/32A Expired GB382878A (en) 1931-04-20 1932-04-18 Process and apparatus for the production of metal tubes with inwardly thickened ends

Country Status (1)

Country Link
GB (1) GB382878A (en)

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