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IN2015KN00599A - - Google Patents

Info

Publication number
IN2015KN00599A
IN2015KN00599A IN599KON2015A IN2015KN00599A IN 2015KN00599 A IN2015KN00599 A IN 2015KN00599A IN 599KON2015 A IN599KON2015 A IN 599KON2015A IN 2015KN00599 A IN2015KN00599 A IN 2015KN00599A
Authority
IN
India
Prior art keywords
cold
temperature
sec
less
rolling process
Prior art date
Application number
Inventor
Taro Kizu
Koichiro Fujita
Hideharu Koga
Masahide Morikawa
Kenji Tahara
Original Assignee
Jfe Steel Corp
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 Jfe Steel Corp filed Critical Jfe Steel Corp
Publication of IN2015KN00599A publication Critical patent/IN2015KN00599A/en

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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • 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
    • 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
    • C21D6/002—Heat treatment of ferrous alloys containing Cr
    • 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
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • 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
    • C21D8/0221—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
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0236—Cold 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
    • 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
    • C21D8/0273—Final recrystallisation annealing
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • 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
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • 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
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • 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
    • C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
    • 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
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • 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
    • 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
    • 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
    • C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
    • 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
    • C21D2211/005—Ferrite

Landscapes

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

Abstract

Provided is a cold-rolled steel sheet with superior shape fixability and a manufacturing method therefor. On a steel raw material having a composition comprising, in mass% C: 0.0010- 0.0030%, Si: 0.05% or less, Mn: 0.1 0.5%, Ti: 0.021 0.060%, B: 0.0005 0.0050%, and containing B and C so that B/C is 0.5 or more, are performed: a hot rolling process for finish rolling with a finish rolling completion temperature of 870 950°C and winding at a winding temperature of 450 630°C; a cold rolling process with a cold rolling reduction of 90% or less; and, after the cold rolling process, an annealing process for heating to a soaking temperature in the range of 700 850°C at an average heating rate of 1 30°C/sec in the temperature range of 600°C and above, and, after holding for 30 200 sec, cooling to the temperature range of 600°C with a cooling rate averaging 3°C/sec or more. Obtained thereby is a cold rolled steel sheet with superior shape fixability, the sheet having a structure wherein the main constituent is ferrite with a mean particle diameter of 10 30 µm and the proportional limit is 100 MPa or less.
IN599KON2015 2012-10-11 2012-10-11 IN2015KN00599A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2012/006532 WO2014057519A1 (en) 2012-10-11 2012-10-11 Cold-rolled steel sheet with superior shape fixability and manufacturing method therefor

Publications (1)

Publication Number Publication Date
IN2015KN00599A true IN2015KN00599A (en) 2015-07-17

Family

ID=50477012

Family Applications (1)

Application Number Title Priority Date Filing Date
IN599KON2015 IN2015KN00599A (en) 2012-10-11 2012-10-11

Country Status (7)

Country Link
US (1) US20150252456A1 (en)
EP (1) EP2907887B1 (en)
JP (1) JPWO2014057519A1 (en)
KR (1) KR20150060957A (en)
CN (1) CN104870678A (en)
IN (1) IN2015KN00599A (en)
WO (1) WO2014057519A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101819358B1 (en) * 2016-08-12 2018-01-17 주식회사 포스코 High-strength thin steel sheet having excellent formability and method for manufacturing the same
JP6468408B2 (en) * 2016-12-21 2019-02-13 新日鐵住金株式会社 H-section steel and its manufacturing method
KR20210079460A (en) * 2019-12-19 2021-06-30 주식회사 포스코 Cold-rolled steel sheet having high hardness and formability and manufacturing method thereof
WO2023140239A1 (en) * 2022-01-21 2023-07-27 日本製鉄株式会社 Cold-rolled steel sheet and manufacturing method thereof

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06116648A (en) * 1992-10-02 1994-04-26 Nippon Steel Corp Method for producing cold rolled steel sheet or hot dip galvanized cold rolled steel sheet having excellent bake hardenability and non-aging property
JP3105380B2 (en) * 1993-06-21 2000-10-30 新日本製鐵株式会社 Manufacturing method of cold-rolled steel sheet for deep drawing with excellent dent resistance and surface distortion resistance
JPH0770650A (en) * 1993-09-02 1995-03-14 Kawasaki Steel Corp Production of cold rolled steel sheet extremely excellent in deep drawability
WO2000006791A1 (en) 1998-07-27 2000-02-10 Nippon Steel Corporation Ferrite-based thin steel sheet excellent in shape freezing feature and manufacturing method thereof
JP2002066637A (en) 2000-08-31 2002-03-05 Nippon Steel Corp Press forming method with excellent dimensional accuracy of molded products
JP3674502B2 (en) * 2000-11-30 2005-07-20 Ｊｆｅスチール株式会社 Bake-hardening cold-rolled steel sheet and method for producing the same
JP3908954B2 (en) * 2001-06-05 2007-04-25 新日本製鐵株式会社 Ferritic thin steel sheet with excellent shape freezing property and manufacturing method thereof
EP2806046B1 (en) * 2006-03-16 2019-07-03 JFE Steel Corporation Cold-rolled steel sheet, method of producing the same, battery, and method of producing the same
JP5407591B2 (en) * 2008-07-22 2014-02-05 Ｊｆｅスチール株式会社 Cold-rolled steel sheet, manufacturing method thereof, and backlight chassis
JP5093029B2 (en) * 2008-09-29 2012-12-05 住友金属工業株式会社 Cold rolled steel sheet and method for producing the same
JP5515732B2 (en) * 2009-12-25 2014-06-11 Ｊｆｅスチール株式会社 Method for producing hot-rolled steel sheet without edge cracks and method for producing cold-rolled steel sheet without edge cracks
JP5051247B2 (en) * 2010-01-15 2012-10-17 Ｊｆｅスチール株式会社 Cold-rolled steel sheet excellent in formability and shape freezing property and its manufacturing method
JP5549414B2 (en) * 2010-06-23 2014-07-16 Ｊｆｅスチール株式会社 Cold-rolled thin steel sheet having excellent shape freezing property and manufacturing method thereof
JP5541243B2 (en) * 2011-07-15 2014-07-09 Ｊｆｅスチール株式会社 Cold-rolled steel sheet having excellent shape freezing property and manufacturing method thereof

Also Published As

Publication number Publication date
EP2907887A1 (en) 2015-08-19
WO2014057519A1 (en) 2014-04-17
KR20150060957A (en) 2015-06-03
US20150252456A1 (en) 2015-09-10
EP2907887B1 (en) 2018-12-05
EP2907887A4 (en) 2015-12-02
JPWO2014057519A1 (en) 2016-08-25
CN104870678A (en) 2015-08-26

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