EP3178954A4 - Cold-rolled steel sheet having excellent spot weldability, and manufacturing method therefor - Google Patents

Cold-rolled steel sheet having excellent spot weldability, and manufacturing method therefor Download PDF

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Publication number
EP3178954A4
EP3178954A4 EP15829208.6A EP15829208A EP3178954A4 EP 3178954 A4 EP3178954 A4 EP 3178954A4 EP 15829208 A EP15829208 A EP 15829208A EP 3178954 A4 EP3178954 A4 EP 3178954A4
Authority
EP
European Patent Office
Prior art keywords
cold
manufacturing
steel sheet
rolled steel
method therefor
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.)
Granted
Application number
EP15829208.6A
Other languages
German (de)
French (fr)
Other versions
EP3178954A1 (en
EP3178954B1 (en
Inventor
Keiji Ueda
Shinjiro Kaneko
Masami Iwasaki
Reiko Sugihara
Takeshi Yokota
Kazuhiro Seto
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.)
JFE Steel Corp
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 EP3178954A1 publication Critical patent/EP3178954A1/en
Publication of EP3178954A4 publication Critical patent/EP3178954A4/en
Application granted granted Critical
Publication of EP3178954B1 publication Critical patent/EP3178954B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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
    • 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
    • C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
    • 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
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • 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
    • C22C38/02—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
    • C22C38/06—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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium with copper
    • 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
    • C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
    • 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
    • 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
    • C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese

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)
EP15829208.6A 2014-08-08 2015-07-31 Cold-rolled steel sheet having excellent spot weldability, and manufacturing method therefor Not-in-force EP3178954B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014162834A JP5935843B2 (en) 2014-08-08 2014-08-08 Cold-rolled steel sheet with excellent spot weldability and method for producing the same
PCT/JP2015/003881 WO2016021169A1 (en) 2014-08-08 2015-07-31 Cold-rolled steel sheet having excellent spot weldability, and manufacturing method therefor

Publications (3)

Publication Number Publication Date
EP3178954A1 EP3178954A1 (en) 2017-06-14
EP3178954A4 true EP3178954A4 (en) 2018-01-10
EP3178954B1 EP3178954B1 (en) 2019-03-06

Family

ID=55263465

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15829208.6A Not-in-force EP3178954B1 (en) 2014-08-08 2015-07-31 Cold-rolled steel sheet having excellent spot weldability, and manufacturing method therefor

Country Status (6)

Country Link
US (1) US20170204492A1 (en)
EP (1) EP3178954B1 (en)
JP (1) JP5935843B2 (en)
CN (1) CN106661693B (en)
MX (1) MX2017001687A (en)
WO (1) WO2016021169A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11066716B2 (en) 2016-08-10 2021-07-20 Jfe Steel Corporation Steel sheet and method for producing the same
JP6296215B1 (en) 2016-08-10 2018-03-20 Ｊｆｅスチール株式会社 Thin steel plate and manufacturing method thereof
US10940556B2 (en) 2016-08-22 2021-03-09 Jfe Steel Corporation Automotive member having resistance weld
JP6624136B2 (en) * 2017-03-24 2019-12-25 Ｊｆｅスチール株式会社 High strength steel sheet and its manufacturing method, resistance spot welded joint, and automotive member

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6264760B1 (en) * 1997-07-28 2001-07-24 Exxonmobil Upstream Research Company Ultra-high strength, weldable steels with excellent ultra-low temperature toughness
US20040238082A1 (en) * 2002-06-14 2004-12-02 Jfe Steel Corporation High strength cold rolled steel plate and method for production thereof
EP2426230A1 (en) * 2009-04-28 2012-03-07 JFE Steel Corporation High-strength hot-dip zinc-coated steel sheet having excellent workability, weldability and fatigue properties, and process for production thereof
EP2578718A1 (en) * 2010-05-31 2013-04-10 JFE Steel Corporation High-strength molten-zinc-plated steel sheet having excellent bendability and weldability, and process for production thereof
WO2013073136A1 (en) * 2011-11-15 2013-05-23 Ｊｆｅスチール株式会社 Thin steel sheet and process for producing same
US20130153096A1 (en) * 2011-12-19 2013-06-20 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) High-yield-ratio and high-strength steel sheet excellent in workability

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7807507A (en) * 1977-07-25 1979-01-29 Hoffmann La Roche TRICYCLICAL CONNECTIONS.
JPH09176781A (en) * 1995-12-22 1997-07-08 Nkk Corp Refined 60 kilo class steel excellent in weldability and galvanizing crack resistance and its production
JP3424619B2 (en) * 1999-09-16 2003-07-07 住友金属工業株式会社 High tensile cold rolled steel sheet and method for producing the same
JP4265153B2 (en) * 2002-06-14 2009-05-20 Ｊｆｅスチール株式会社 High-tensile cold-rolled steel sheet with excellent elongation and stretch flangeability and method for producing the same
JP4306202B2 (en) * 2002-08-02 2009-07-29 住友金属工業株式会社 High tensile cold-rolled steel sheet and method for producing the same
EP1749895A1 (en) * 2005-08-04 2007-02-07 ARCELOR France Manufacture of steel sheets having high resistance and excellent ductility, products thereof
JP4926814B2 (en) * 2007-04-27 2012-05-09 新日本製鐵株式会社 High strength steel plate with controlled yield point elongation and its manufacturing method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6264760B1 (en) * 1997-07-28 2001-07-24 Exxonmobil Upstream Research Company Ultra-high strength, weldable steels with excellent ultra-low temperature toughness
US20040238082A1 (en) * 2002-06-14 2004-12-02 Jfe Steel Corporation High strength cold rolled steel plate and method for production thereof
EP2426230A1 (en) * 2009-04-28 2012-03-07 JFE Steel Corporation High-strength hot-dip zinc-coated steel sheet having excellent workability, weldability and fatigue properties, and process for production thereof
EP2578718A1 (en) * 2010-05-31 2013-04-10 JFE Steel Corporation High-strength molten-zinc-plated steel sheet having excellent bendability and weldability, and process for production thereof
WO2013073136A1 (en) * 2011-11-15 2013-05-23 Ｊｆｅスチール株式会社 Thin steel sheet and process for producing same
US20130153096A1 (en) * 2011-12-19 2013-06-20 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) High-yield-ratio and high-strength steel sheet excellent in workability

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2016021169A1 *

Also Published As

Publication number Publication date
JP5935843B2 (en) 2016-06-15
MX2017001687A (en) 2017-04-27
WO2016021169A1 (en) 2016-02-11
CN106661693B (en) 2018-09-11
EP3178954A1 (en) 2017-06-14
CN106661693A (en) 2017-05-10
US20170204492A1 (en) 2017-07-20
EP3178954B1 (en) 2019-03-06
JP2016037650A (en) 2016-03-22

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