MX2021002282A - Hot-rolled steel sheet and production method therefor, cold-rolled steel sheet and production method therefor, production method for cold-rolled annealed steel sheet, and production method for hot-dip galvanized steel sheet. - Google Patents

Hot-rolled steel sheet and production method therefor, cold-rolled steel sheet and production method therefor, production method for cold-rolled annealed steel sheet, and production method for hot-dip galvanized steel sheet.

Info

Publication number
MX2021002282A
MX2021002282A MX2021002282A MX2021002282A MX2021002282A MX 2021002282 A MX2021002282 A MX 2021002282A MX 2021002282 A MX2021002282 A MX 2021002282A MX 2021002282 A MX2021002282 A MX 2021002282A MX 2021002282 A MX2021002282 A MX 2021002282A
Authority
MX
Mexico
Prior art keywords
steel sheet
production method
cold
hot
rolled
Prior art date
Application number
MX2021002282A
Other languages
Spanish (es)
Inventor
Kenji Tsuzumi
Yuji Miki
Ryosuke Chiyohara
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 MX2021002282A publication Critical patent/MX2021002282A/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
    • 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
    • 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
    • C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur

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)
  • Coating With Molten Metal (AREA)

Abstract

The present invention provides a cold-rolled steel sheet that exhibits excellent surface properties after press work while having high contents of Mn and P. The cold-rolled steel sheet according to the present invention has a prescribed component makeup comprising 0.2-2.0% of Mn and 0.005-0.060% of P. When ΔSm and ΔWm are calculated for each local maximum value in a width-direction profile of a Mn segregation degree Sm in the center part of sheet thickness, the average value and the standard deviation 2σm of ΔSm where ΔWm becomes at least 200 μm are at most 0.10 and at most 0.05, respectively. Here, Sm equals Mn concentration (%) at an arbitrarily defined point / average Mn concentration (%) in the steel sheet; ΔSm is the difference between a local maximum value of Sm and an average value of two local minimum values adjacent to said local maximum value; and ΔWm represents the width-direction distance between two local minimum values adjacent to each local maximum value. Likewise, in a width-direction profile of a P segregation degree Sp in the center part of sheet thickness, the average value is at most 0.20 and the standard deviation 2σp is at most 0.10.
MX2021002282A 2018-08-28 2018-08-28 Hot-rolled steel sheet and production method therefor, cold-rolled steel sheet and production method therefor, production method for cold-rolled annealed steel sheet, and production method for hot-dip galvanized steel sheet. MX2021002282A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2018/031828 WO2020044445A1 (en) 2018-08-28 2018-08-28 Hot-rolled steel sheet and production method therefor, cold-rolled steel sheet and production method therefor, production method for cold-rolled annealed steel sheet, and production method for hot-dip galvanized steel sheet

Publications (1)

Publication Number Publication Date
MX2021002282A true MX2021002282A (en) 2021-05-27

Family

ID=69643477

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2021002282A MX2021002282A (en) 2018-08-28 2018-08-28 Hot-rolled steel sheet and production method therefor, cold-rolled steel sheet and production method therefor, production method for cold-rolled annealed steel sheet, and production method for hot-dip galvanized steel sheet.

Country Status (3)

Country Link
CN (1) CN112585287B (en)
MX (1) MX2021002282A (en)
WO (1) WO2020044445A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117940597A (en) 2021-10-11 2024-04-26 日本制铁株式会社 Hot rolled steel sheet
WO2023063014A1 (en) 2021-10-11 2023-04-20 日本製鉄株式会社 Hot-rolled steel plate

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01178355A (en) * 1987-12-29 1989-07-14 Nkk Corp Continuous casting method
JPH116028A (en) * 1997-06-11 1999-01-12 Kobe Steel Ltd High strength cold rolled steel sheet for deep drawing, excellent in surface characteristic after press forming
JP3536752B2 (en) * 1999-12-01 2004-06-14 住友金属工業株式会社 Thin-walled steel plate with excellent resistance to hydrogen-induced cracking and method for producing the same
JP2001181786A (en) * 1999-12-27 2001-07-03 Nkk Corp High strength hot dip galvanized steel sheet excellent in surface characteristic and workability, and method for manufacture thereof
JP3861640B2 (en) * 2001-09-06 2006-12-20 住友金属工業株式会社 Cold-rolled steel sheet and manufacturing method thereof
JP4605100B2 (en) * 2006-06-07 2011-01-05 住友金属工業株式会社 High strength hot rolled steel sheet and method for producing the same
US8245760B2 (en) * 2007-11-19 2012-08-21 Posco Continuous cast slab and method for manufacturing the same
JP5206349B2 (en) * 2008-11-19 2013-06-12 新日鐵住金株式会社 Steel sheet, surface-treated steel sheet, and production method thereof
PL2371978T3 (en) * 2008-11-19 2018-09-28 Nippon Steel & Sumitomo Metal Corporation Steel sheet and surface-treated steel sheet
JP5533629B2 (en) * 2010-12-17 2014-06-25 新日鐵住金株式会社 Continuously cast slab for high-strength steel sheet, its continuous casting method, and high-strength steel sheet
CN102744383A (en) * 2012-07-30 2012-10-24 首钢总公司 Nb-contained hypo-peritectic steel continuous casting and manufacture method and dedicated continuous casting machine thereof
JP5825343B2 (en) * 2012-10-03 2015-12-02 新日鐵住金株式会社 Alloyed hot-dip galvanized steel sheet and method for producing the same
EP2759614B1 (en) * 2013-01-25 2019-01-02 ThyssenKrupp Steel Europe AG Method for generating a flat steel product with an amorphous, semi-amorphous or fine crystalline structure and flat steel product with such structures
JP6036756B2 (en) * 2013-08-30 2016-11-30 Ｊｆｅスチール株式会社 High strength hot rolled steel sheet and method for producing the same
JP6245386B2 (en) * 2015-08-11 2017-12-13 Ｊｆｅスチール株式会社 High-strength steel sheet material, hot-rolled steel sheet for high-strength steel sheet, hot-rolled annealed material for high-strength steel sheet, high-strength steel sheet, high-strength hot-dip galvanized steel sheet, and high-strength electroplated steel sheet, and production methods thereof

Also Published As

Publication number Publication date
CN112585287B (en) 2022-03-01
CN112585287A (en) 2021-03-30
WO2020044445A1 (en) 2020-03-05

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