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ES2039933T3 - PROCEDURE FOR HOT STRAIGHTENING OF STEEL PIPES. - Google Patents

PROCEDURE FOR HOT STRAIGHTENING OF STEEL PIPES.

Info

Publication number
ES2039933T3
ES2039933T3 ES198989730188T ES89730188T ES2039933T3 ES 2039933 T3 ES2039933 T3 ES 2039933T3 ES 198989730188 T ES198989730188 T ES 198989730188T ES 89730188 T ES89730188 T ES 89730188T ES 2039933 T3 ES2039933 T3 ES 2039933T3
Authority
ES
Spain
Prior art keywords
straightening
rolling stock
procedure
steel pipes
hot straightening
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 - Lifetime
Application number
ES198989730188T
Other languages
Spanish (es)
Inventor
Ingo Dr. Ing. Von Hagen
Karlheinz Dr. Kutzenberger
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
Application granted granted Critical
Publication of ES2039933T3 publication Critical patent/ES2039933T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Metal Rolling (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

The invention relates to a method of heat-straightening extended steel rolling stock in a roller straightening machine, in which method the rolling stock has a temperature below Ar1 or Ac1 and of at least 300 DEG C and is cooled down to room temperature after the straightening. In order to improve the mechanical-technological properties, it is proposed according to the invention that the rolling stock, accelerated immediately after reaching the required geometry, be cooled down at least to such a temperature at which distortion due to cooling stresses no longer occurs as a result of further cooling.
ES198989730188T 1988-09-27 1989-08-16 PROCEDURE FOR HOT STRAIGHTENING OF STEEL PIPES. Expired - Lifetime ES2039933T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3833163 1988-09-27

Publications (1)

Publication Number Publication Date
ES2039933T3 true ES2039933T3 (en) 1993-10-01

Family

ID=6364031

Family Applications (1)

Application Number Title Priority Date Filing Date
ES198989730188T Expired - Lifetime ES2039933T3 (en) 1988-09-27 1989-08-16 PROCEDURE FOR HOT STRAIGHTENING OF STEEL PIPES.

Country Status (4)

Country Link
EP (1) EP0362122B1 (en)
AT (1) ATE87515T1 (en)
DE (1) DE58903947D1 (en)
ES (1) ES2039933T3 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19828785C2 (en) * 1998-06-27 2000-08-03 Sms Demag Ag Process for straightening rolled section steel
DE19828784A1 (en) * 1998-06-27 1999-12-30 Schloemann Siemag Ag Process for straightening section steel while minimizing residual stresses
TW200811492A (en) 2006-07-12 2008-03-01 Nitto Denko Corp Polarizing plate with optical compensation layer, method of producing the same, and liquid crystal panel, liquid crystal display, and image display including the same
CN104668316B (en) * 2015-02-25 2017-03-08 成都易态科技有限公司 The method and apparatus of aligning outside sintering blank stove
CN113996888B (en) * 2021-11-24 2023-05-30 中冶陕压重工设备有限公司 Welding repair method for machining deformation of supporting roller bearing seat

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE914862C (en) * 1942-12-29 1954-08-09 Hohenlimburger Walzwerke Ag Continuous process and device for hardening, tempering and bending profile bars
DE888401C (en) * 1943-07-20 1953-08-31 Administration Sequestre Des R Process for straightening workpieces
GB748357A (en) * 1953-06-01 1956-05-02 Somerset Wire Company Ltd Improvements in the manufacture of wire and the like
GB1038359A (en) * 1964-05-27 1966-08-10 Drever Co Roller pressure quench system
DE2262140A1 (en) * 1972-12-19 1974-06-20 Lasalle Steel Co Deforming steels - without reducing their strength

Also Published As

Publication number Publication date
EP0362122B1 (en) 1993-03-31
EP0362122A1 (en) 1990-04-04
DE58903947D1 (en) 1993-05-06
ATE87515T1 (en) 1993-04-15

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