DE69116958D1 - Process for the heat treatment of a steel product - Google Patents

Process for the heat treatment of a steel product

Info

Publication number
DE69116958D1
DE69116958D1 DE69116958T DE69116958T DE69116958D1 DE 69116958 D1 DE69116958 D1 DE 69116958D1 DE 69116958 T DE69116958 T DE 69116958T DE 69116958 T DE69116958 T DE 69116958T DE 69116958 D1 DE69116958 D1 DE 69116958D1
Authority
DE
Germany
Prior art keywords
temperature
product
cooling
steel
stage
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
DE69116958T
Other languages
German (de)
Inventor
Jean-Michel Dengler
Jean-Francois Noville
Carlo Panunzi
Stephan Wilmotte
Albert Zenner
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.)
Centre de Recherches Metallurgiques CRM ASBL
Arcelor Luxembourg SA
Original Assignee
Centre de Recherches Metallurgiques CRM ASBL
Arbed SA
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3884898&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69116958(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Centre de Recherches Metallurgiques CRM ASBL, Arbed SA filed Critical Centre de Recherches Metallurgiques CRM ASBL
Application granted granted Critical
Publication of DE69116958D1 publication Critical patent/DE69116958D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • C21D1/02—Hardening articles or materials formed by forging or rolling, with no further heating beyond that required for the formation
    • 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
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Articles (AREA)
  • Control Of Heat Treatment Processes (AREA)
  • Metal Rolling (AREA)

Abstract

Method of heat treatment of a steel product leaving the rolling mill in which, during a first stage, the product is subjected to cooling with water to a surface temperature which is equal to or lower than the temperature of the onset of the martensite transformation (Ms point) of the steel, with a rate of cooling which is at least equal to the critical rate for quenching the steel; during a second stage the product is first of all subjected, by virtue of the heat released by the unquenched part of the product, to a reheating of the quenched surface layer to a surface temperature, known as the self-annealing temperature, of between 550 DEG C and 650 DEG C, and then to a secondary cooling to a surface temperature of less than 450 DEG C; the final cooling of the product to a temperature of less than 120 DEG C is then performed, for example with the aid of highly agitated water. During the stage which follows the self-annealing, the product may first of all advantageously be allowed to stay in air up to a temperature of approximately 550 DEG C, and then be cooled at high speed to a temperature substantially below 400 DEG C, and be reheated to a temperature of between 400 DEG C and 420 DEG C before being allowed to cool in air. <IMAGE>
DE69116958T 1990-08-14 1991-08-06 Process for the heat treatment of a steel product Expired - Lifetime DE69116958D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE9000787A BE1004526A6 (en) 1990-08-14 1990-08-14 Heat treatment method of steel product.

Publications (1)

Publication Number Publication Date
DE69116958D1 true DE69116958D1 (en) 1996-03-21

Family

ID=3884898

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69116958T Expired - Lifetime DE69116958D1 (en) 1990-08-14 1991-08-06 Process for the heat treatment of a steel product

Country Status (5)

Country Link
EP (1) EP0473561B1 (en)
JP (1) JPH04232206A (en)
AT (1) ATE133996T1 (en)
BE (1) BE1004526A6 (en)
DE (1) DE69116958D1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6264767B1 (en) 1995-06-07 2001-07-24 Ipsco Enterprises Inc. Method of producing martensite-or bainite-rich steel using steckel mill and controlled cooling
IT1295566B1 (en) * 1997-06-05 1999-05-13 Danieli Off Mecc THERMAL TREATMENT PROCESS FOR LAMINATES
KR100505730B1 (en) * 2002-12-13 2005-08-03 두산중공업 주식회사 Heat treatment of high strength and high toughness roll shell
JP4817898B2 (en) * 2006-03-14 2011-11-16 トピー工業株式会社 Heat treatment apparatus and heat treatment method
CZ201786A3 (en) * 2017-02-15 2019-01-30 Západočeská Univerzita V Plzni Method of manufacturing steel parts
CN108285950B (en) * 2018-02-11 2019-08-20 中冶陕压重工设备有限公司 A kind of heat treatment method controlling the quenching distortion of sendzimir mill working roll

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1090143B (en) * 1975-01-29 1985-06-18 Centre Rech Metallurgique PROCESS FOR MANUFACTURING LAMINATED STEEL PRODUCTS
BE834059A (en) * 1975-09-30 1976-01-16 PROCESS FOR TREATING LAMINATED STEEL PRODUCTS
BE854647A (en) * 1977-05-13 1977-09-01 Centre Rech Metallurgique PROCESS FOR THE PRODUCTION OF IMPROVED QUALITY STEEL PROFILES
DE2844331A1 (en) * 1977-10-14 1979-04-19 Centre Rech Metallurgique METHOD FOR TREATMENT OF TUBULAR STEEL PROFILES
BE896347A (en) * 1983-03-31 1983-09-30 Ct De Recheches Metallurg Ct V PROCESS FOR IMPROVING THE QUALITY OF STEEL PROFILES

Also Published As

Publication number Publication date
EP0473561B1 (en) 1996-02-07
JPH04232206A (en) 1992-08-20
ATE133996T1 (en) 1996-02-15
BE1004526A6 (en) 1992-12-08
EP0473561A1 (en) 1992-03-04

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Legal Events

Date Code Title Description
8332 No legal effect for de