ATE294256T1 - METHOD FOR PRODUCING A HOT ROLLED STEEL STRIP - Google Patents

METHOD FOR PRODUCING A HOT ROLLED STEEL STRIP

Info

Publication number
ATE294256T1
ATE294256T1 AT03396059T AT03396059T ATE294256T1 AT E294256 T1 ATE294256 T1 AT E294256T1 AT 03396059 T AT03396059 T AT 03396059T AT 03396059 T AT03396059 T AT 03396059T AT E294256 T1 ATE294256 T1 AT E294256T1
Authority
AT
Austria
Prior art keywords
steel strip
mpa
rolled steel
producing
hot rolled
Prior art date
Application number
AT03396059T
Other languages
German (de)
Inventor
Mikko Petteri Hemmilae
Reijo Arvi Liimatainen
Tommi Petteri Liimatainen
Original Assignee
Rautaruukki Oyj
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=8564185&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE294256(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Rautaruukki Oyj filed Critical Rautaruukki Oyj
Application granted granted Critical
Publication of ATE294256T1 publication Critical patent/ATE294256T1/en

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
    • 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
    • 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
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with 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
    • C21D2211/002—Bainite
    • 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
    • C21D2211/008—Martensite

Abstract

A hot-rolled steel strip rolled to a final thickness that is at least 2 mm but no more than 12 mm, with a microstructure comprising at least 95 % martensite and/or bainite. The steel contains, in percentages by weight: 0.08 % - 0.16 % C, 0.5 % - 1.5% Cr and/or 0.1 % - 0.5 % Mo, ≤ 0.015 % S and ≤ 0.03 % P, 0.01 % - 0.08 % Al, as well as 0.6 % - 1.1 % Mn, and 0.1 % - 0.3 % Si, the rest being Fe and unavoidable impurities. The tensile strength of the steel strip is 700 Mpa - 1500 Mpa at a tensile elongation that has an A5 value of at least 6 %, and the yield strength is 600 Mpa - 1400 Mpa.
AT03396059T 2002-06-19 2003-06-18 METHOD FOR PRODUCING A HOT ROLLED STEEL STRIP ATE294256T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20021188A FI114484B (en) 2002-06-19 2002-06-19 Hot rolled strip steel and its manufacturing process

Publications (1)

Publication Number Publication Date
ATE294256T1 true ATE294256T1 (en) 2005-05-15

Family

ID=8564185

Family Applications (1)

Application Number Title Priority Date Filing Date
AT03396059T ATE294256T1 (en) 2002-06-19 2003-06-18 METHOD FOR PRODUCING A HOT ROLLED STEEL STRIP

Country Status (7)

Country Link
EP (1) EP1375694B2 (en)
AT (1) ATE294256T1 (en)
DE (1) DE60300561T3 (en)
ES (1) ES2238669T5 (en)
FI (1) FI114484B (en)
PT (1) PT1375694E (en)
SI (1) SI1375694T1 (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2872442B1 (en) * 2004-07-05 2006-09-15 Usinor Sa HIGH DENSITY WELDED ENERGY ASSEMBLIES OF METALLIC CONSTRUCTION STEELS HAVING EXCELLENT TENACITY IN THE MELT ZONE, AND METHOD FOR MANUFACTURING SUCH WELDED ASSEMBLIES
GB2437954B (en) * 2005-03-30 2010-12-08 Kobe Steel Ltd High strength hot rolled steel sheet excellent in phosphatability
CN101370954B (en) * 2006-03-31 2010-10-06 株式会社神户制钢所 High-strength cold rolled steel sheet excelling in chemical treatability
US7846275B2 (en) * 2006-05-24 2010-12-07 Kobe Steel, Ltd. High strength hot rolled steel sheet having excellent stretch flangeability and its production method
FI20095528A (en) * 2009-05-11 2010-11-12 Rautaruukki Oyj Process for producing a hot rolled strip steel product and hot rolled strip steel product
FI122143B (en) * 2009-10-23 2011-09-15 Rautaruukki Oyj Procedure for the manufacture of a high-strength galvanized profile product and profile product
FI122313B (en) * 2010-06-07 2011-11-30 Rautaruukki Oyj Process for the production of hot rolled steel product and hot rolled steel
FI20106275A (en) * 2010-12-02 2012-06-03 Rautaruukki Oyj Ultra high strength structural steel and a process for producing ultra high strength structural steel
CN102134680A (en) * 2011-04-19 2011-07-27 首钢总公司 Ultrahigh strength steel with 960MPa of yield strength and production method thereof
CN102345048A (en) * 2011-06-28 2012-02-08 南阳汉冶特钢有限公司 Large-thickness boron steel SS400-B plate and production method thereof
WO2013007729A1 (en) 2011-07-10 2013-01-17 Tata Steel Ijmuiden Bv Hot-rolled high-strength steel strip with improved haz-softening resistance and method of producing said steel
JP6094139B2 (en) * 2011-12-21 2017-03-15 Ｊｆｅスチール株式会社 High strength steel plate with excellent strength-elongation balance and method for producing the same
PL3097214T3 (en) 2014-01-24 2021-07-05 Rautaruukki Oyj Hot-rolled ultrahigh strength steel strip product
DE112015005690T8 (en) 2014-12-19 2018-04-19 Nucor Corporation Hot rolled martensitic lightweight sheet steel and method of making the same
CN104831166B (en) * 2015-04-17 2016-08-17 河北钢铁股份有限公司邯郸分公司 A kind of strip steel production method improving cylinder steel rim of a cup shape uniformity
KR101977474B1 (en) 2017-08-09 2019-05-10 주식회사 포스코 Plated steel sheet having excellent surface quality, strength and ductility
KR102020435B1 (en) 2017-12-22 2019-09-10 주식회사 포스코 High strength hot-rolled steel sheet having excellent bendability and low-temperature toughness and mathod for manufacturing thereof
KR102164078B1 (en) * 2018-12-18 2020-10-13 주식회사 포스코 High strength hot-rolled steel sheet having excellentworkability, and method for manufacturing the same
KR102237488B1 (en) 2019-12-16 2021-04-08 주식회사 포스코 High hardness steel sheet having excellent punching formability and manufacturing method for the same
JP7373576B2 (en) 2019-12-18 2023-11-02 ポスコ カンパニー リミテッド High-strength hot-rolled steel sheet with excellent punchability and material uniformity and its manufacturing method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2076425B (en) * 1980-05-21 1984-04-04 British Steel Corp Dual-phase steel sheet
DE3440752A1 (en) * 1984-11-08 1986-05-22 Thyssen Stahl AG, 4100 Duisburg METHOD FOR PRODUCING HOT TAPE WITH A TWO-PHASE TEXTURE
JPS62180021A (en) * 1986-02-03 1987-08-07 Nisshin Steel Co Ltd Manufacture of high tension hot rolled steel plate superior in workability and baking hardenability
GB8621903D0 (en) * 1986-09-11 1986-10-15 British Steel Corp Production of steel
JPH06248341A (en) † 1993-02-23 1994-09-06 Sumitomo Metal Ind Ltd Production of steel with high strength and high toughness from non-heat-treated steel
JP3338499B2 (en) * 1993-03-16 2002-10-28 日新製鋼株式会社 Method for producing high-strength hot-rolled steel sheet with excellent workability
CN1089811C (en) * 1996-07-12 2002-08-28 蒂森钢铁股份公司 Hot-rolled steel strip and method of making it
FR2807068B1 (en) † 2000-03-29 2002-10-11 Usinor HOT ROLLED STEEL WITH VERY HIGH LIMIT OF ELASTICITY AND MECHANICAL STRENGTH FOR USE IN PARTICULAR FOR THE PRODUCTION OF PARTS OF MOTOR VEHICLES

Also Published As

Publication number Publication date
FI114484B (en) 2004-10-29
FI20021188A0 (en) 2002-06-19
DE60300561D1 (en) 2005-06-02
EP1375694B2 (en) 2010-11-17
EP1375694A1 (en) 2004-01-02
ES2238669T3 (en) 2005-09-01
SI1375694T1 (en) 2011-03-31
FI20021188A (en) 2003-12-20
EP1375694B1 (en) 2005-04-27
DE60300561T3 (en) 2011-06-09
SI1375694T2 (en) 2005-10-31
PT1375694E (en) 2005-07-29
ES2238669T5 (en) 2011-05-12
DE60300561T2 (en) 2006-02-23

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