DE50208550D1 - A method for producing a pearlite-free hot rolled steel strip and hot strip produced by this method - Google Patents

A method for producing a pearlite-free hot rolled steel strip and hot strip produced by this method

Info

Publication number
DE50208550D1
DE50208550D1 DE50208550T DE50208550T DE50208550D1 DE 50208550 D1 DE50208550 D1 DE 50208550D1 DE 50208550 T DE50208550 T DE 50208550T DE 50208550 T DE50208550 T DE 50208550T DE 50208550 D1 DE50208550 D1 DE 50208550D1
Authority
DE
Germany
Prior art keywords
hot
degreesc
strip
rolled
pearlite
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
DE50208550T
Other languages
German (de)
Inventor
Andreas Nuss
Thomas Dr Ing Heller
Guenter Dipl Ing Stich
Hasz Udo Van
Ulrich Dr Rudolphi
Eberhard Dr Ing Sowka
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.)
ThyssenKrupp Steel Europe AG
Original Assignee
ThyssenKrupp Steel 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 ThyssenKrupp Steel AG filed Critical ThyssenKrupp Steel AG
Application granted granted Critical
Publication of DE50208550D1 publication Critical patent/DE50208550D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/008—Heat treatment of ferrous alloys containing Si
    • 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
    • C21D8/021—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular fabrication or treatment of ingot or slab
    • C21D8/0215—Rapid solidification; Thin strip casting
    • 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
    • C21D8/0278—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular surface treatment
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • 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
    • C21D2211/009—Pearlite
    • 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
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—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
    • 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

Landscapes

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

Abstract

A steel melt of specified composition is cast to thin steel slab, annealed, descaled, finish rolled to hot rolled strip and subjected to controlled cooling. A steel melt is cast to thin steel slab which contains iron, inevitable impurities and the following, all expressed as wt%. carbon (C): 0.06-3, silicon (Si): 0.1-3.0 and manganese (Mn) 0.3-1.1. The sum of Si and Mn contents is 1.5-3.5. At least titanium (Ti) or niobium (Nb) is present at a level of 0.005 - 0.15. The following maximum percentages are also contained: chromium (Cr): 0.8, molybdenum (Mo): 0.8, copper (Cu): 1, nickel (Ni): 1. The thin slab is annealed from an entry temperature at 850 -1050 degreesC, at 1000 -1200 degreesC for 10 - 60 minutes. The slabs are descaled in a washer, the spray being at 300 bar or more. The slabs are finish-rolled to hot-rolled strip or sheet at temperatures of 750 - 1000 degreesC. Controlled cooling brings the sheet to a suitable temperature for winding onto rolls.
DE50208550T 2002-08-28 2002-08-28 A method for producing a pearlite-free hot rolled steel strip and hot strip produced by this method Expired - Lifetime DE50208550D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02019314A EP1396549B1 (en) 2002-08-28 2002-08-28 Process for manufacturing hot rolled pearlite-free steel strip and hot strip obtained thereby

Publications (1)

Publication Number Publication Date
DE50208550D1 true DE50208550D1 (en) 2006-12-07

Family

ID=31502704

Family Applications (1)

Application Number Title Priority Date Filing Date
DE50208550T Expired - Lifetime DE50208550D1 (en) 2002-08-28 2002-08-28 A method for producing a pearlite-free hot rolled steel strip and hot strip produced by this method

Country Status (3)

Country Link
EP (1) EP1396549B1 (en)
AT (1) ATE343649T1 (en)
DE (1) DE50208550D1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8444780B2 (en) * 2009-02-20 2013-05-21 Nucor Corporation Hot rolled thin cast strip product and method for making the same
CN101717890B (en) * 2009-11-26 2012-09-05 三一重工股份有限公司 Cast low alloy steel for grader blade and preparation method
CN109536686A (en) * 2018-12-12 2019-03-29 贵阳市白云区科创生产力促进中心 The preparation method of manganese TRIP steel in a kind of Nb-microalloying
KR102209552B1 (en) 2018-12-19 2021-01-28 주식회사 포스코 High strength hot-rolled steel sheet having excellent hole expansion ratio and manufacturing method for the same
CN112522595B (en) * 2019-09-19 2022-10-21 宝山钢铁股份有限公司 High-strength thin-specification fire-resistant weather-resistant steel plate/steel belt and production method thereof
KR102404770B1 (en) 2019-12-20 2022-06-07 주식회사 포스코 High strength hot-rolled steel sheet having excellent yield ratio and manufactueing method for the same
KR102403648B1 (en) 2020-11-17 2022-05-30 주식회사 포스코 High strength hot-rolled steel sheet and hot-rolled plated steel sheet, and manufacturing method for thereof
KR102487759B1 (en) 2020-12-18 2023-01-12 주식회사 포스코 High strength hot-rolled steel sheet and hot-rolled plated steel sheet, and manufacturing method for thereof

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0295500B2 (en) * 1987-06-03 2003-09-10 Nippon Steel Corporation Hot rolled steel sheet with a high strength and a distinguished formability
JP3390584B2 (en) * 1995-08-31 2003-03-24 川崎製鉄株式会社 Hot rolled steel sheet and method for producing the same
US6190469B1 (en) * 1996-11-05 2001-02-20 Pohang Iron & Steel Co., Ltd. Method for manufacturing high strength and high formability hot-rolled transformation induced plasticity steel containing copper
BE1011149A3 (en) * 1997-05-12 1999-05-04 Cockerill Rech & Dev Steel ductile high elastic limit and method for manufacturing steel.
JP2000034537A (en) * 1998-07-16 2000-02-02 Nippon Steel Corp High strength hot rolled steel plate excellent in machinability, and its production
FR2796966B1 (en) * 1999-07-30 2001-09-21 Ugine Sa PROCESS FOR THE MANUFACTURE OF THIN STRIP OF TRIP-TYPE STEEL AND THIN STRIP THUS OBTAINED

Also Published As

Publication number Publication date
ATE343649T1 (en) 2006-11-15
EP1396549A1 (en) 2004-03-10
EP1396549B1 (en) 2006-10-25

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: THYSSENKRUPP STEEL EUROPE AG, 47166 DUISBURG, DE