EP0980914A3 - Process and device for manufacturing very ductile profiled steel pipes - Google Patents

Process and device for manufacturing very ductile profiled steel pipes Download PDF

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Publication number
EP0980914A3
EP0980914A3 EP99250175A EP99250175A EP0980914A3 EP 0980914 A3 EP0980914 A3 EP 0980914A3 EP 99250175 A EP99250175 A EP 99250175A EP 99250175 A EP99250175 A EP 99250175A EP 0980914 A3 EP0980914 A3 EP 0980914A3
Authority
EP
European Patent Office
Prior art keywords
steel pipes
rolled
ductile
manufacturing
hot
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Withdrawn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
EP99250175A
Other languages
German (de)
French (fr)
Other versions
EP0980914A2 (en
Inventor
Kurt Dr.-Ing. Niederhoff
Michael Dr.-Ing. Brensing
Ingo Dr.-Ing. Von Hagen
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 EP0980914A2 publication Critical patent/EP0980914A2/en
Publication of EP0980914A3 publication Critical patent/EP0980914A3/en
Withdrawn legal-status Critical Current

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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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
    • 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)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

Die Erfindung betrifft ein Verfahren und eine Anlage zur Herstellung von hochfesten und hochzähen Stahlprofilrohren, die von der runden Querschnittsform abweichen, aus warmgewalzten nahtlosen Stahlrohren mit kreisförmigem Querschnitt. Dabei werden die warmgewalzten Stahlrohre nach Erreichen ihrer Endabmessung als Rundrohr in an sich bekannter Weise gehärtet und anschließend angelassen und die Stahlrohre werden danach bei Anlaßtemperatur (500 °C bis < Ac1) in ein Rohrprofilwalzwerk eingesetzt und in ihre endgültige Form gewalzt und anschließend an Luft abgekühlt.The invention relates to a method and a plant for the production of high-strength and high-toughness steel profile tubes, which differ from the round cross-sectional shape, from hot-rolled seamless steel tubes with a circular cross-section. The hot-rolled steel pipes are hardened in a manner known per se and then tempered after they have reached their final dimensions as a round pipe, and the steel pipes are then inserted at a tempering temperature (500 ° C. to <Ac 1 ) in a pipe profile rolling mill and rolled into their final form and then in air cooled.

EP99250175A 1998-08-20 1999-06-03 Process and device for manufacturing very ductile profiled steel pipes Withdrawn EP0980914A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19838673 1998-08-20
DE1998138673 DE19838673C1 (en) 1998-08-20 1998-08-20 Process for the production of high-strength and tough steel profile tubes and plant for its implementation

Publications (2)

Publication Number Publication Date
EP0980914A2 EP0980914A2 (en) 2000-02-23
EP0980914A3 true EP0980914A3 (en) 2003-06-11

Family

ID=7878696

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99250175A Withdrawn EP0980914A3 (en) 1998-08-20 1999-06-03 Process and device for manufacturing very ductile profiled steel pipes

Country Status (2)

Country Link
EP (1) EP0980914A3 (en)
DE (1) DE19838673C1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10138443A1 (en) * 2001-08-03 2003-02-27 Mannesmann Roehren Werke Ag Use of an elongated, hot-worked hollow profile for a telescopic boom of a lifting device
RU2252972C1 (en) * 2004-06-07 2005-05-27 Закрытое акционерное общество Научно-производственное объединение "ПОЛИМЕТАЛЛ" Pipe for gas- and product pipelines and a method of its production

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2348152A1 (en) * 1972-09-25 1974-03-28 Uss Eng & Consult PROCESS FOR MANUFACTURING STEEL HOLLOW BODY WITH POLYGONAL CROSS SECTION
EP0345205A1 (en) * 1988-06-01 1989-12-06 MANNESMANN Aktiengesellschaft Method for tempering a hollow cylindrical steel product
EP0576107A1 (en) * 1992-06-10 1993-12-29 MANNESMANN Aktiengesellschaft Use of a steel for the manufacture of constructiontubes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2348152A1 (en) * 1972-09-25 1974-03-28 Uss Eng & Consult PROCESS FOR MANUFACTURING STEEL HOLLOW BODY WITH POLYGONAL CROSS SECTION
EP0345205A1 (en) * 1988-06-01 1989-12-06 MANNESMANN Aktiengesellschaft Method for tempering a hollow cylindrical steel product
EP0576107A1 (en) * 1992-06-10 1993-12-29 MANNESMANN Aktiengesellschaft Use of a steel for the manufacture of constructiontubes

Also Published As

Publication number Publication date
EP0980914A2 (en) 2000-02-23
DE19838673C1 (en) 2000-04-20

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