EP2543744A8 - Method and device for treating a steel product and steel product - Google Patents

Method and device for treating a steel product and steel product Download PDF

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Publication number
EP2543744A8
EP2543744A8 EP20120401136 EP12401136A EP2543744A8 EP 2543744 A8 EP2543744 A8 EP 2543744A8 EP 20120401136 EP20120401136 EP 20120401136 EP 12401136 A EP12401136 A EP 12401136A EP 2543744 A8 EP2543744 A8 EP 2543744A8
Authority
EP
European Patent Office
Prior art keywords
steel product
treating
product
tensile strength
yield strength
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Withdrawn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
EP20120401136
Other languages
German (de)
French (fr)
Other versions
EP2543744A1 (en
Inventor
Mario Reichert
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.)
Aicher Max
Original Assignee
Aicher Max
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 Aicher Max filed Critical Aicher Max
Publication of EP2543744A1 publication Critical patent/EP2543744A1/en
Publication of EP2543744A8 publication Critical patent/EP2543744A8/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • C21D1/32—Soft annealing, e.g. spheroidising
    • 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
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/003—Cementite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

Die vorliegende Erfindung betrifft ein Verfahren sowie eine Vorrichtung zum Behandeln eines Stahlprodukts, insbesondere eines Walzprodukts, nach einem Warmumformprozess, insbesondere zur Verbesserung der Streckgrenze und der Zugfestigkeit. Um zu erreichen, dass bei dem Stahlprodukt insbesondere eine verbesserte Streckgrenze und eine verbesserte Zugfestigkeit realisiert werden kann, ist erfindungsgemäß vorgesehen, dass nach der Warmumformung das Stahlprodukt mit hoher Abkühlgeschwindigkeit, insbesondere mittels Wasserkühlung, abgekühlt wird, und dass nach der Abkühlung das Stahlprodukt einer Wärmebehandlung "Glühen auf kugelige Karbide" unterzogen wird.The present invention relates to a method and an apparatus for treating a steel product, in particular a rolled product, after a hot forming process, in particular for improving the yield strength and the tensile strength. In order to achieve that in the steel product, in particular an improved yield strength and an improved tensile strength can be realized, is provided according to the invention that after hot working the steel product with high cooling rate, in particular by means of water cooling, is cooled, and that after cooling, the steel product of a heat treatment "Annealing on spherical carbides" is subjected.

EP12401136A 2011-07-08 2012-07-02 Method and device for treating a steel product and steel product Withdrawn EP2543744A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201110051682 DE102011051682B4 (en) 2011-07-08 2011-07-08 Method and apparatus for treating a steel product and steel product

Publications (2)

Publication Number Publication Date
EP2543744A1 EP2543744A1 (en) 2013-01-09
EP2543744A8 true EP2543744A8 (en) 2013-03-20

Family

ID=46516658

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12401136A Withdrawn EP2543744A1 (en) 2011-07-08 2012-07-02 Method and device for treating a steel product and steel product

Country Status (2)

Country Link
EP (1) EP2543744A1 (en)
DE (1) DE102011051682B4 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ305587B6 (en) * 2014-06-12 2015-12-23 Comtes Fht A.S. Heat treatment process of bearing steel
DE102016208680A1 (en) * 2015-05-25 2016-12-01 Aktiebolaget Skf A method for restoring the structure of a steel component after heating and steel component obtained by the method

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4375378A (en) * 1979-12-07 1983-03-01 Nippon Steel Corporation Process for producing spheroidized wire rod
JP3215891B2 (en) * 1991-06-14 2001-10-09 新日本製鐵株式会社 Manufacturing method of steel rod for cold working
DE69326068T2 (en) * 1993-11-02 2000-04-20 Nippon Steel Corp. Process for producing high-strength steel with excellent resistance to stress corrosion cracking
DE19513314C2 (en) * 1995-04-03 1997-07-03 Mannesmann Ag Process for producing a hot-worked elongated product, in particular rod or tube, from hypereutectoid steel
DE19612818C2 (en) * 1996-03-30 1998-04-09 Schloemann Siemag Ag Process for cooling warm-rolled steel profiles
SE521770C2 (en) * 1999-02-22 2003-12-02 Ovako Steel Ab Spheroidal annealing of undereutectic low alloy steel
JP4086451B2 (en) * 1999-07-21 2008-05-14 本田技研工業株式会社 Cold forging billet processing method and cold continuous forging method
JP4435953B2 (en) * 1999-12-24 2010-03-24 新日本製鐵株式会社 Bar wire for cold forging and its manufacturing method
JP3879459B2 (en) * 2001-08-31 2007-02-14 Ｊｆｅスチール株式会社 Manufacturing method of high hardenability high carbon hot rolled steel sheet

Also Published As

Publication number Publication date
DE102011051682A1 (en) 2013-01-10
EP2543744A1 (en) 2013-01-09
DE102011051682B4 (en) 2013-02-21

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