EP3476969A4 - HOT ROLLED STEEL SHEET WITH PRECIPITATION HARDENING HAVING EXCELLENT MATERIAL UNIFORMITY AND EXCELLENT HOLE EXTENSIBILITY, AND METHOD FOR MANUFACTURING THE SAME - Google Patents

HOT ROLLED STEEL SHEET WITH PRECIPITATION HARDENING HAVING EXCELLENT MATERIAL UNIFORMITY AND EXCELLENT HOLE EXTENSIBILITY, AND METHOD FOR MANUFACTURING THE SAME Download PDF

Info

Publication number
EP3476969A4
EP3476969A4 EP17815756.6A EP17815756A EP3476969A4 EP 3476969 A4 EP3476969 A4 EP 3476969A4 EP 17815756 A EP17815756 A EP 17815756A EP 3476969 A4 EP3476969 A4 EP 3476969A4
Authority
EP
European Patent Office
Prior art keywords
precipitation
manufacturing
steel sheet
rolled steel
hot rolled
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.)
Withdrawn
Application number
EP17815756.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3476969A1 (en
Inventor
Hyun-taek NA
Hwan-Goo Seong
Seok-Jong SEO
Sung-Il Kim
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.)
Posco Holdings Inc
Original Assignee
Posco Co Ltd
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 Posco Co Ltd filed Critical Posco Co Ltd
Publication of EP3476969A1 publication Critical patent/EP3476969A1/en
Publication of EP3476969A4 publication Critical patent/EP3476969A4/en
Withdrawn legal-status Critical Current

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
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/02—Hardening by precipitation
    • 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
    • C21D8/021—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular fabrication or treatment of ingot or slab
    • C21D8/0215—Rapid solidification; Thin strip casting
    • 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
    • C21D8/0247—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
    • 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
    • C22C38/001—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
    • C22C38/02—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
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • 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
    • C21D2211/004—Dispersions; Precipitations
    • 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)
EP17815756.6A 2016-06-23 2017-06-23 HOT ROLLED STEEL SHEET WITH PRECIPITATION HARDENING HAVING EXCELLENT MATERIAL UNIFORMITY AND EXCELLENT HOLE EXTENSIBILITY, AND METHOD FOR MANUFACTURING THE SAME Withdrawn EP3476969A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020160078573A KR101767839B1 (ko) 2016-06-23 2016-06-23 재질 균일성 및 구멍확장성이 우수한 석출강화형 열연강판 및 그 제조방법
PCT/KR2017/006668 WO2017222343A1 (ko) 2016-06-23 2017-06-23 재질 균일성 및 구멍확장성이 우수한 석출강화형 열연강판 및 그 제조방법

Publications (2)

Publication Number Publication Date
EP3476969A1 EP3476969A1 (en) 2019-05-01
EP3476969A4 true EP3476969A4 (en) 2019-06-12

Family

ID=60142108

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17815756.6A Withdrawn EP3476969A4 (en) 2016-06-23 2017-06-23 HOT ROLLED STEEL SHEET WITH PRECIPITATION HARDENING HAVING EXCELLENT MATERIAL UNIFORMITY AND EXCELLENT HOLE EXTENSIBILITY, AND METHOD FOR MANUFACTURING THE SAME

Country Status (5)

Country Link
US (1) US20200325563A1 (ko)
EP (1) EP3476969A4 (ko)
KR (1) KR101767839B1 (ko)
CN (1) CN109415791A (ko)
WO (1) WO2017222343A1 (ko)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3347210B2 (ja) * 1994-02-09 2002-11-20 日新製鋼株式会社 精密打ち抜き用高強度鋼板の製造方法
CN101538680A (zh) * 2009-05-06 2009-09-23 湖南华菱涟源钢铁有限公司 一种生产屈服强度600MPa级高强钢的方法
EP2130938A1 (en) * 2007-03-27 2009-12-09 Nippon Steel Corporation High-strength hot rolled steel sheet being free from peeling and excelling in surface and burring properties and process for manufacturing the same
EP2743364A1 (en) * 2011-08-09 2014-06-18 Nippon Steel & Sumitomo Metal Corporation Hot-rolled steel sheet having high yield ratio and excellent low-temperature impact energy absorption and haz softening resistance and method for producing same

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0826433B2 (ja) 1992-12-28 1996-03-13 株式会社神戸製鋼所 伸びフランジ性に優れた高強度熱延鋼板
JP3716638B2 (ja) * 1998-09-10 2005-11-16 Ｊｆｅスチール株式会社 フェライト＋ベイナイト組織を有する高張力熱延鋼帯の製造方法
JP3775341B2 (ja) 2002-04-30 2006-05-17 Ｊｆｅスチール株式会社 加工性に優れた高張力熱延鋼板ならびにその製造方法および加工方法
KR100711481B1 (ko) 2005-12-26 2007-04-24 주식회사 포스코 석출강화능이 우수한 자동차용 열연강판의 제조방법
KR101245699B1 (ko) 2010-11-10 2013-03-25 주식회사 포스코 인장강도 590ＭＰａ급의 재질편차가 우수한 고강도 열연 ＴＲＩＰ강의 제조방법
KR101245701B1 (ko) 2010-11-15 2013-04-01 주식회사 포스코 인장강도 590ＭＰａ급의 가공성 및 재질편차가 우수한 고강도 열연 ＤＰ강의 제조방법
KR101504404B1 (ko) * 2012-12-21 2015-03-19 주식회사 포스코 구멍확장성 및 재질 편차가 우수한 고강도 열연강판 및 이의 제조방법
KR101510272B1 (ko) * 2012-12-27 2015-04-08 주식회사 포스코 열연강판 제조방법 및 이를 이용한 열연강판
KR20150025910A (ko) * 2013-08-30 2015-03-11 현대제철 주식회사 고강도 열연강판 및 그 제조 방법

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3347210B2 (ja) * 1994-02-09 2002-11-20 日新製鋼株式会社 精密打ち抜き用高強度鋼板の製造方法
EP2130938A1 (en) * 2007-03-27 2009-12-09 Nippon Steel Corporation High-strength hot rolled steel sheet being free from peeling and excelling in surface and burring properties and process for manufacturing the same
CN101538680A (zh) * 2009-05-06 2009-09-23 湖南华菱涟源钢铁有限公司 一种生产屈服强度600MPa级高强钢的方法
EP2743364A1 (en) * 2011-08-09 2014-06-18 Nippon Steel & Sumitomo Metal Corporation Hot-rolled steel sheet having high yield ratio and excellent low-temperature impact energy absorption and haz softening resistance and method for producing same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2017222343A1 *

Also Published As

Publication number Publication date
EP3476969A1 (en) 2019-05-01
CN109415791A (zh) 2019-03-01
US20200325563A1 (en) 2020-10-15
WO2017222343A1 (ko) 2017-12-28
KR101767839B1 (ko) 2017-08-14

Similar Documents

Publication Publication Date Title
EP3650569A4 (en) HOT ROLLED STEEL SHEET AND METHOD FOR MANUFACTURING ITEM
EP3486346A4 (en) STEEL SHEET AND METHOD FOR PRODUCING SAME
EP3489382A4 (en) STEEL SHEET, AND METHOD FOR MANUFACTURING THE SAME
EP3296415A4 (en) High strength hot rolled steel sheet and manufacturing method for same
EP3495528A4 (en) STEEL SHEET, AND PLATED STEEL SHEET
HUE044866T2 (hu) Hidegen hengerelt, tûzi bevonatolt acéllemez, gyártási eljárás és alkalmazás
EP3128026A4 (en) High-strength cold rolled steel sheet exhibiting excellent material-quality uniformity, and production method therefor
EP3473741A4 (en) THIN STEEL PLATE AND METHOD OF MANUFACTURE
EP3495529A4 (en) STEEL SHEET AND PLATED STEEL SHEET
EP3495527A4 (en) STEEL SHEET, AND PLATED STEEL SHEET
EP3467134A4 (en) HIGH-RESISTANT THIN STEEL PLATE AND METHOD FOR THE PRODUCTION THEREOF
EP3312299A4 (en) Steel sheet and manufacturing method
EP3584340A4 (en) SHEET STEEL AND ITS MANUFACTURING PROCESS
EP3553195A4 (en) HIGH METAL STEEL SHEET AND PROCESS FOR PRODUCTION THEREOF
EP3556482A4 (en) ROLLER AND PLATED STEEL SHEET PRODUCED THEREFOR
EP3521477A4 (en) STEEL SHEET FOR CARBONING AND PRODUCTION METHOD FOR STEEL SHEET FOR CARBONING
EP3276030A4 (en) Hot-rolled steel sheet and manufacturing method of same, and manufacturing method of cold-rolled steel sheet
EP3305931A4 (en) Steel sheet and manufacturing method therefor
EP3476962A4 (en) THIN STEEL SHEET, AND METHOD FOR MANUFACTURING THE SAME
EP3584346A4 (en) HOT ROLLED STEEL SHEET AND ITS MANUFACTURING PROCESS
EP3530770A4 (en) HOT-ROLLED STEEL SHEET FOR THE MANUFACTURE OF SOFT IRON, AND METHOD FOR MANUFACTURING SAID HOT-ROLLED STEEL SHEET
EP3517648A4 (en) STEEL SHEET FOR CEMENTING AND METHOD FOR PRODUCING STEEL SHEET FOR CEMENTING
EP3467135A4 (en) THIN STEEL PLATE AND METHOD OF MANUFACTURING THEREOF
EP3653745A4 (en) HIGH-STRENGTH STEEL SHEET AND MANUFACTURING METHOD THEREOF
EP3712286A4 (en) HOT ROLLED SHEET AND ITS MANUFACTURING PROCESS

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20190114

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

A4 Supplementary search report drawn up and despatched

Effective date: 20190513

RIC1 Information provided on ipc code assigned before grant

Ipc: C21D 9/46 20060101ALI20190507BHEP

Ipc: C22C 38/12 20060101ALI20190507BHEP

Ipc: B22D 11/00 20060101ALI20190507BHEP

Ipc: C22C 38/02 20060101ALI20190507BHEP

Ipc: C21D 6/02 20060101ALI20190507BHEP

Ipc: C22C 38/04 20060101ALI20190507BHEP

Ipc: C21D 8/02 20060101ALI20190507BHEP

Ipc: C22C 38/14 20060101AFI20190507BHEP

Ipc: C22C 38/00 20060101ALI20190507BHEP

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20200116

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20200603