GB1248834A - An improved method and apparatus for inserting a mandrel in a tubular metal billet and for feeding the billet with the mandrel therein to a rolling mill - Google Patents

An improved method and apparatus for inserting a mandrel in a tubular metal billet and for feeding the billet with the mandrel therein to a rolling mill

Info

Publication number
GB1248834A
GB1248834A GB43738/69A GB4373869A GB1248834A GB 1248834 A GB1248834 A GB 1248834A GB 43738/69 A GB43738/69 A GB 43738/69A GB 4373869 A GB4373869 A GB 4373869A GB 1248834 A GB1248834 A GB 1248834A
Authority
GB
United Kingdom
Prior art keywords
billet
mandrel
rollers
mill
speed
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
GB43738/69A
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 GB1248834A publication Critical patent/GB1248834A/en
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
    • B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
    • B21C3/16—Mandrels; Mounting or adjusting same
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
    • B21B25/02—Guides, supports, or abutments for mandrels, e.g. carriages or steadiers; Adjusting devices for mandrels

Landscapes

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

Abstract

1,248,834. Rolling mills. MANNESMANN A.G. 4 Sept., 1969 [6 Sept., 1968], No. 43738/69. Heading B3M. A mandrel 1 is rapidly fed by rollers 3 into a hot hollow billet 7 while the billet is moved slowly towards a continuous rolling mill 12. The speed of introduction of the mandrel is controlled so that the mandrel and billet are moving together, at the same speed as the first stand of the mill, as they enter the stand. The degree the mandrel extends from the leading end of the billet as the mandrel enters the mill is controlled according to the reduction to be made to the billet. The billet is intially fed from a lateral conveyer 6 on to rollers 10, the rollers then being raised until the billet is held in driving engagement between rollers 10 and 11. The rapid acceleration of the billet by the rollers 3 is helped by electromagnets 4 which pull the mandrel towards the rollers. Adjacent electromagnets are of reversed polarity, and a demagnetizing ring is provided, in order to prevent magnetization of the billet. The speed of the various rollers is controlled by a computer in response to signals from an infra-red position detector 5, a photo-cell 8, and displacement measuring devices 13 and 14. A lubricant spray device 15 is provided for the mandrel.
GB43738/69A 1968-09-06 1969-09-04 An improved method and apparatus for inserting a mandrel in a tubular metal billet and for feeding the billet with the mandrel therein to a rolling mill Expired GB1248834A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681777104 DE1777104A1 (en) 1968-09-06 1968-09-06 Method and device for inserting a mandrel bar into a tube billet

Publications (1)

Publication Number Publication Date
GB1248834A true GB1248834A (en) 1971-10-06

Family

ID=5703033

Family Applications (1)

Application Number Title Priority Date Filing Date
GB43738/69A Expired GB1248834A (en) 1968-09-06 1969-09-04 An improved method and apparatus for inserting a mandrel in a tubular metal billet and for feeding the billet with the mandrel therein to a rolling mill

Country Status (5)

Country Link
US (1) US3625044A (en)
AT (1) AT304415B (en)
DE (1) DE1777104A1 (en)
FR (1) FR2017474A1 (en)
GB (1) GB1248834A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2559073C1 (en) * 2014-02-21 2015-08-10 Открытое акционерное общество "Электростальский завод тяжелого машиностроения" Device for rod installation with mandrel at pipe mill

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1190843B (en) * 1982-05-28 1988-02-24 Innocenti Santeustacchio Spa EQUIPMENT TO SUPPORT THE LA STANGA DRILL-HOLDER OF A ROLLER AT A PERFORATOR

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2559073C1 (en) * 2014-02-21 2015-08-10 Открытое акционерное общество "Электростальский завод тяжелого машиностроения" Device for rod installation with mandrel at pipe mill

Also Published As

Publication number Publication date
DE1777104A1 (en) 1971-04-01
AT304415B (en) 1973-01-10
FR2017474A1 (en) 1970-05-22
US3625044A (en) 1971-12-07

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