EP3561107A4 - LOW ELASTICITY STEEL SHEET HAVING EXCELLENT LOW TEMPERATURE TENACITY AND MANUFACTURING METHOD THEREOF - Google Patents

LOW ELASTICITY STEEL SHEET HAVING EXCELLENT LOW TEMPERATURE TENACITY AND MANUFACTURING METHOD THEREOF Download PDF

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Publication number
EP3561107A4
EP3561107A4 EP17882705.1A EP17882705A EP3561107A4 EP 3561107 A4 EP3561107 A4 EP 3561107A4 EP 17882705 A EP17882705 A EP 17882705A EP 3561107 A4 EP3561107 A4 EP 3561107A4
Authority
EP
European Patent Office
Prior art keywords
low
steel sheet
yield ratio
temperature toughness
manufacturing same
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.)
Pending
Application number
EP17882705.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3561107A1 (en
Inventor
Woo-Gyeom KIM
Kyung-Keun Um
Ki-Hyun Bang
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 EP3561107A1 publication Critical patent/EP3561107A1/en
Publication of EP3561107A4 publication Critical patent/EP3561107A4/en
Pending legal-status Critical Current

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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • C21D1/28—Normalising
    • 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
    • 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
    • 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
    • C21D8/0247—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
    • 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
    • C22C38/06—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
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • 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
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
    • 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 Steel (AREA)
EP17882705.1A 2016-12-21 2017-12-08 LOW ELASTICITY STEEL SHEET HAVING EXCELLENT LOW TEMPERATURE TENACITY AND MANUFACTURING METHOD THEREOF Pending EP3561107A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020160176126A KR101917451B1 (ko) 2016-12-21 2016-12-21 저온인성이 우수한 저항복비 강판 및 그 제조방법
PCT/KR2017/014411 WO2018117507A1 (ko) 2016-12-21 2017-12-08 저온인성이 우수한 저항복비 강판 및 그 제조방법

Publications (2)

Publication Number Publication Date
EP3561107A1 EP3561107A1 (en) 2019-10-30
EP3561107A4 true EP3561107A4 (en) 2020-01-01

Family

ID=62626734

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17882705.1A Pending EP3561107A4 (en) 2016-12-21 2017-12-08 LOW ELASTICITY STEEL SHEET HAVING EXCELLENT LOW TEMPERATURE TENACITY AND MANUFACTURING METHOD THEREOF

Country Status (5)

Country Link
EP (1) EP3561107A4 (ja)
JP (1) JP6847225B2 (ja)
KR (1) KR101917451B1 (ja)
CN (1) CN110100027B (ja)
WO (1) WO2018117507A1 (ja)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102200225B1 (ko) * 2019-09-03 2021-01-07 주식회사 포스코 극저온 횡팽창이 우수한 압력용기용 강판 및 그 제조 방법
JP7445686B2 (ja) * 2020-01-22 2024-03-07 ポスコ カンパニー リミテッド 黒鉛化熱処理用線材と黒鉛鋼及びその製造方法
KR102480707B1 (ko) 2020-11-12 2022-12-23 현대제철 주식회사 고인성 니켈 강재 및 그 제조방법
CN113061811A (zh) * 2021-03-17 2021-07-02 攀钢集团江油长城特殊钢有限公司 一种lng船用结构钢及其制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100833075B1 (ko) * 2006-12-22 2008-05-27 주식회사 포스코 저온인성과 취성균열전파정지특성이 우수한 고강도저항복비 구조용 강재 및 그 제조방법
US7520943B2 (en) * 2003-06-12 2009-04-21 Jfe Steel Corporation Steel plate and welded steel tube exhibiting low yield ratio, high strength and high toughness
JP2012031509A (ja) * 2010-06-29 2012-02-16 Jfe Steel Corp 高一様伸び特性を備えた高強度低降伏比鋼、その製造方法、および高強度低降伏比溶接鋼管
JP2013049895A (ja) * 2011-08-31 2013-03-14 Jfe Steel Corp 高一様伸び特性を備え、かつ溶接部低温靱性に優れた高強度溶接鋼管、およびその製造方法
EP2940172A1 (en) * 2012-12-27 2015-11-04 Posco High strength steel sheet having excellent cryogenic temperature toughness and low yield ratio properties, and method for manufacturing same

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07278656A (ja) * 1994-04-04 1995-10-24 Nippon Steel Corp 低降伏比高張力鋼の製造方法
JP2000063946A (ja) * 1998-08-21 2000-02-29 Kawasaki Steel Corp 耐震部材用低降伏点厚鋼板の製造方法
JP2002105589A (ja) * 2000-09-26 2002-04-10 National Institute For Materials Science 低降伏比高張力鋼とその製造方法
JP4445161B2 (ja) * 2001-06-19 2010-04-07 新日本製鐵株式会社 疲労強度に優れた厚鋼板の製造方法
CN101775536A (zh) * 2009-01-13 2010-07-14 宝山钢铁股份有限公司 225MPa级抗震用低屈服强度钢及其制造方法
KR101403224B1 (ko) 2011-12-28 2014-06-02 주식회사 포스코 저항복비 특성 및 저온인성이 우수한 후 강판 및 그 제조방법
CN102586680A (zh) * 2012-03-22 2012-07-18 内蒙古包钢钢联股份有限公司 一种低屈强比的高层建筑结构用钢板及其正火工艺
KR101412267B1 (ko) 2012-04-25 2014-07-02 현대제철 주식회사 강판 및 그 제조 방법
KR20150065275A (ko) * 2013-12-05 2015-06-15 두산중공업 주식회사 저온 내충격성이 향상된 주강 및 그 제조방법
CN103667909B (zh) * 2013-12-13 2016-02-03 武汉钢铁(集团)公司 一种屈强比≤0.65的移动式海洋平台用钢及生产方法
KR101799202B1 (ko) * 2016-07-01 2017-11-20 주식회사 포스코 저항복비 특성 및 저온인성이 우수한 고강도 강판 및 그 제조방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7520943B2 (en) * 2003-06-12 2009-04-21 Jfe Steel Corporation Steel plate and welded steel tube exhibiting low yield ratio, high strength and high toughness
KR100833075B1 (ko) * 2006-12-22 2008-05-27 주식회사 포스코 저온인성과 취성균열전파정지특성이 우수한 고강도저항복비 구조용 강재 및 그 제조방법
JP2012031509A (ja) * 2010-06-29 2012-02-16 Jfe Steel Corp 高一様伸び特性を備えた高強度低降伏比鋼、その製造方法、および高強度低降伏比溶接鋼管
JP2013049895A (ja) * 2011-08-31 2013-03-14 Jfe Steel Corp 高一様伸び特性を備え、かつ溶接部低温靱性に優れた高強度溶接鋼管、およびその製造方法
EP2940172A1 (en) * 2012-12-27 2015-11-04 Posco High strength steel sheet having excellent cryogenic temperature toughness and low yield ratio properties, and method for manufacturing same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2018117507A1 *

Also Published As

Publication number Publication date
WO2018117507A1 (ko) 2018-06-28
CN110100027B (zh) 2021-10-15
JP2020503435A (ja) 2020-01-30
KR101917451B1 (ko) 2018-11-09
KR20180072496A (ko) 2018-06-29
CN110100027A (zh) 2019-08-06
EP3561107A1 (en) 2019-10-30
JP6847225B2 (ja) 2021-03-24

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