WO2018110853A8 - 저온역 버링성이 우수한 고강도 복합조직강 및 그 제조방법 - Google Patents

저온역 버링성이 우수한 고강도 복합조직강 및 그 제조방법 Download PDF

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Publication number
WO2018110853A8
WO2018110853A8 PCT/KR2017/013408 KR2017013408W WO2018110853A8 WO 2018110853 A8 WO2018110853 A8 WO 2018110853A8 KR 2017013408 W KR2017013408 W KR 2017013408W WO 2018110853 A8 WO2018110853 A8 WO 2018110853A8
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WIPO (PCT)
Prior art keywords
phase steel
low temperature
high strength
strength multi
burring properties
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PCT/KR2017/013408
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English (en)
French (fr)
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WO2018110853A1 (ko
Inventor
김성일
서석종
나현택
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주식회사 포스코
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Priority to EP17880227.8A priority Critical patent/EP3556889B1/en
Priority to JP2019531320A priority patent/JP6945628B2/ja
Priority to US16/467,226 priority patent/US20200080167A1/en
Priority to CN201780077012.6A priority patent/CN110088337B/zh
Publication of WO2018110853A1 publication Critical patent/WO2018110853A1/ko
Publication of WO2018110853A8 publication Critical patent/WO2018110853A8/ko

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    • 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
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/002—Heat treatment of ferrous alloys containing Cr
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/008—Heat treatment of ferrous alloys containing Si
    • 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
    • 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
    • C22C38/04—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
    • C22C38/18—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
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • 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
    • 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
    • C21D2211/001—Austenite
    • 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
    • C21D2211/002—Bainite
    • 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
    • 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
    • C21D2211/008—Martensite

Abstract

본 발명은 저온역 버링성이 우수한 고강도 복합조직강 및 그 제조방법에 관한 것으로, 보다 상세하게는, 자동차 샤시 부품의 멤버류, 로어암, 보강재, 연결재 등으로 바람직하게 사용될 수 있는 저온역 버링성이 우수한 고강도 복합조직강 및 그 제조방법에 관한 것이다.
PCT/KR2017/013408 2016-12-13 2017-11-23 저온역 버링성이 우수한 고강도 복합조직강 및 그 제조방법 WO2018110853A1 (ko)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP17880227.8A EP3556889B1 (en) 2016-12-13 2017-11-23 High strength multi-phase steel having excellent burring properties at low temperature, and method for producing same
JP2019531320A JP6945628B2 (ja) 2016-12-13 2017-11-23 低温域におけるバーリング性に優れた高強度複合組織鋼及びその製造方法
US16/467,226 US20200080167A1 (en) 2016-12-13 2017-11-23 High strength multi-phase steel having excellent burring properties at low temperature, and method for producing same
CN201780077012.6A CN110088337B (zh) 2016-12-13 2017-11-23 低温下冲缘加工性优异的高强度复合组织钢及其制造方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020160169718A KR101899670B1 (ko) 2016-12-13 2016-12-13 저온역 버링성이 우수한 고강도 복합조직강 및 그 제조방법
KR10-2016-0169718 2016-12-13

Publications (2)

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WO2018110853A1 WO2018110853A1 (ko) 2018-06-21
WO2018110853A8 true WO2018110853A8 (ko) 2018-10-04

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PCT/KR2017/013408 WO2018110853A1 (ko) 2016-12-13 2017-11-23 저온역 버링성이 우수한 고강도 복합조직강 및 그 제조방법

Country Status (6)

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US (1) US20200080167A1 (ko)
EP (1) EP3556889B1 (ko)
JP (1) JP6945628B2 (ko)
KR (1) KR101899670B1 (ko)
CN (1) CN110088337B (ko)
WO (1) WO2018110853A1 (ko)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102098478B1 (ko) 2018-07-12 2020-04-07 주식회사 포스코 고강도, 고성형성, 우수한 소부경화성을 갖는 열연도금강판 및 그 제조방법
KR102098482B1 (ko) * 2018-07-25 2020-04-07 주식회사 포스코 내충돌 특성이 우수한 고강도 강판 및 이의 제조방법
KR102164078B1 (ko) * 2018-12-18 2020-10-13 주식회사 포스코 성형성이 우수한 고강도 열연강판 및 그 제조방법
KR20220152532A (ko) * 2020-03-13 2022-11-16 타타 스틸 네덜란드 테크날러지 베.뷔. 강 물품 및 그 제조 방법
DE102020206298A1 (de) * 2020-05-19 2021-11-25 Thyssenkrupp Steel Europe Ag Stahlflachprodukt und Verfahren zu dessen Herstellung
KR102403648B1 (ko) * 2020-11-17 2022-05-30 주식회사 포스코 고강도 열연강판, 열연 도금강판 및 이들의 제조방법
WO2023218229A1 (en) * 2022-05-13 2023-11-16 Arcelormittal Hot rolled and steel sheet and a method of manufacturing thereof

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3188787B2 (ja) 1993-04-07 2001-07-16 新日本製鐵株式会社 穴拡げ性と延性に優れた高強度熱延鋼板の製造方法
WO1999013123A1 (fr) * 1997-09-11 1999-03-18 Kawasaki Steel Corporation Plaque d'acier laminee a chaud contenant des particules hyperfines, son procede de fabrication et procede de fabrication de plaques d'acier laminees a froid
JP3551064B2 (ja) * 1999-02-24 2004-08-04 Ｊｆｅスチール株式会社 耐衝撃性に優れた超微細粒熱延鋼板およびその製造方法
JP4261765B2 (ja) * 2000-03-29 2009-04-30 新日本製鐵株式会社 溶接性と低温靭性に優れた低降伏比高張力鋼およびその製造方法
KR100962745B1 (ko) * 2002-12-24 2010-06-10 신닛뽄세이테쯔 카부시키카이샤 용접 열영향부의 내연화성이 우수한 버링성 고강도 강판 및그 제조 방법
JP4661306B2 (ja) * 2005-03-29 2011-03-30 Ｊｆｅスチール株式会社 超高強度熱延鋼板の製造方法
JP4088316B2 (ja) 2006-03-24 2008-05-21 株式会社神戸製鋼所 複合成形性に優れた高強度熱延鋼板
JP5338525B2 (ja) 2009-07-02 2013-11-13 新日鐵住金株式会社 バーリング性に優れた高降伏比型熱延鋼板及びその製造方法
JP5402847B2 (ja) 2010-06-17 2014-01-29 新日鐵住金株式会社 バーリング性に優れる高強度熱延鋼板及びその製造方法
KR101256523B1 (ko) * 2010-12-28 2013-04-22 주식회사 포스코 저항복비형 고강도 열연강판의 제조방법 및 이에 의해 제조된 열연강판
MX364430B (es) * 2011-03-18 2019-04-26 Nippon Steel & Sumitomo Metal Corp Hoja de acero laminado en caliente con excelente formabilidad de prensa y metodo de produccion del mismo.
TWI468530B (zh) * 2012-02-13 2015-01-11 新日鐵住金股份有限公司 冷軋鋼板、鍍敷鋼板、及其等之製造方法
JP5610003B2 (ja) 2013-01-31 2014-10-22 Ｊｆｅスチール株式会社 バーリング加工性に優れた高強度熱延鋼板およびその製造方法
JP6194951B2 (ja) * 2013-04-15 2017-09-13 新日鐵住金株式会社 熱延鋼板
CN103510008B (zh) * 2013-09-18 2016-04-06 济钢集团有限公司 一种热轧铁素体贝氏体高强钢板及其制造方法
JP5858032B2 (ja) * 2013-12-18 2016-02-10 Ｊｆｅスチール株式会社 高強度鋼板およびその製造方法
CN105849295B (zh) * 2013-12-26 2019-02-19 Posco公司 焊接性和去毛刺性优异的热轧钢板及其制备方法

Also Published As

Publication number Publication date
KR101899670B1 (ko) 2018-09-17
JP2020509172A (ja) 2020-03-26
US20200080167A1 (en) 2020-03-12
EP3556889A1 (en) 2019-10-23
CN110088337A (zh) 2019-08-02
WO2018110853A1 (ko) 2018-06-21
EP3556889B1 (en) 2023-05-24
CN110088337B (zh) 2021-09-24
EP3556889A4 (en) 2019-10-23
KR20180068099A (ko) 2018-06-21
JP6945628B2 (ja) 2021-10-06

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