GB1340737A - Tube manufacture - Google Patents

Tube manufacture

Info

Publication number
GB1340737A
GB1340737A GB1774171A GB1774171A GB1340737A GB 1340737 A GB1340737 A GB 1340737A GB 1774171 A GB1774171 A GB 1774171A GB 1774171 A GB1774171 A GB 1774171A GB 1340737 A GB1340737 A GB 1340737A
Authority
GB
United Kingdom
Prior art keywords
stands
tube
weak points
stretch reducing
welded together
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
GB1774171A
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.)
Friedrich Kocks GmbH and Co
Original Assignee
Friedrich Kocks GmbH and Co
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 Friedrich Kocks GmbH and Co filed Critical Friedrich Kocks GmbH and Co
Publication of GB1340737A publication Critical patent/GB1340737A/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
    • B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
    • B21B17/14—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling without mandrel, e.g. stretch-reducing mills

Landscapes

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

Abstract

1340737 Making tubes; rolling FRIEDRICH KOCKS 28 May 1971 [23 June 1970] 17741/71 Headings B3M and B3A In a method of stretch reducing a tube 18 having weak points 14 where adjacent lengths are butt-welded together, the stretch reducing mill 2 is so controlled that the tension exerted on these weak points is reduced as they pass through the mill. This lessens the risk of fractures in the stretch reducing process. The tube 18 may be formed from lengths of seamless tube welded together, or (as shown) from strips 8 which are butt-welded together, are skelped by rollers 14, and seam welded by an induction welder 16. A heater 20 is followed by a detector 28 which senses the presence of weak points. An output signal from the detector is used to control an auxiliary motor 26 for the stretch reducing stands. The motor 26 modifies the driving speed applied to the stands by a main motor 24. Alternatively in the case where the stands are individually driven, the speeds of the stands can be suitably adjusted as the weak points pass them. A flying shear 22 finally severs desired lengths from the tube.
GB1774171A 1970-06-23 1971-05-28 Tube manufacture Expired GB1340737A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702030802 DE2030802A1 (en) 1970-06-23 1970-06-23 Process for reducing the stretching of pipes

Publications (1)

Publication Number Publication Date
GB1340737A true GB1340737A (en) 1974-01-30

Family

ID=5774651

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1774171A Expired GB1340737A (en) 1970-06-23 1971-05-28 Tube manufacture

Country Status (2)

Country Link
DE (1) DE2030802A1 (en)
GB (1) GB1340737A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5913512A (en) * 1982-07-15 1984-01-24 ウラルスキイ・ナウチノ−イスレドバテルスキイ・インステイチユト・トルブノイ・プロミイシレンノステイ Method of forming inside coating metallic pipe

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2605486C2 (en) * 1976-02-12 1982-11-11 Kocks Technik Gmbh & Co, 4010 Hilden Process for the production of longitudinally welded pipes
DE3028210C2 (en) * 1980-07-25 1990-12-06 Kocks Technik Gmbh & Co, 4010 Hilden Rolling mill for reducing the stretching of tubes
US20060157539A1 (en) * 2005-01-19 2006-07-20 Dubois Jon D Hot reduced coil tubing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5913512A (en) * 1982-07-15 1984-01-24 ウラルスキイ・ナウチノ−イスレドバテルスキイ・インステイチユト・トルブノイ・プロミイシレンノステイ Method of forming inside coating metallic pipe

Also Published As

Publication number Publication date
DE2030802A1 (en) 1971-12-30

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee