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
Links
Classifications
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- 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
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 ÎSm and ÎWm 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 2Ïm of ÎSm where ÎWm 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; ÎSm 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 ÎWm 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 2Ïp is at most 0.10.
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2023063010A1 (en) | 2021-10-11 | 2023-04-20 | ||
WO2023063014A1 (en) | 2021-10-11 | 2023-04-20 | 日本製鉄株式会社 | Hot-rolled steel plate |
Family Cites Families (15)
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 |
CN101868314B (en) * | 2007-11-19 | 2015-04-22 | Posco公司 | 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 |
ES2672070T3 (en) * | 2008-11-19 | 2018-06-12 | 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 |
WO2014054141A1 (en) * | 2012-10-03 | 2014-04-10 | 新日鐵住金株式会社 | Alloyed hot-dip zinc-coated steel sheet and method for producing 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 |
WO2017026125A1 (en) * | 2015-08-11 | 2017-02-16 | Jfeスチール株式会社 | Material for high-strength steel sheet, hot rolled material for high-strength steel sheet, material annealed after hot rolling and for high-strength steel sheet, high-strength steel sheet, high-strength hot-dip plated steel sheet, high-strength electroplated steel sheet, and manufacturing method for same |
-
2018
- 2018-08-28 WO PCT/JP2018/031828 patent/WO2020044445A1/en active Application Filing
- 2018-08-28 MX MX2021002282A patent/MX2021002282A/en unknown
- 2018-08-28 CN CN201880096679.5A patent/CN112585287B/en active Active
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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