WO2017111443A8 - 열간 저항성이 우수한 고강도 구조용 강판 및 그 제조방법 - Google Patents

열간 저항성이 우수한 고강도 구조용 강판 및 그 제조방법 Download PDF

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Publication number
WO2017111443A8
WO2017111443A8 PCT/KR2016/014964 KR2016014964W WO2017111443A8 WO 2017111443 A8 WO2017111443 A8 WO 2017111443A8 KR 2016014964 W KR2016014964 W KR 2016014964W WO 2017111443 A8 WO2017111443 A8 WO 2017111443A8
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WO
WIPO (PCT)
Prior art keywords
heat treatment
steel sheet
excellent heat
structural steel
less
Prior art date
Application number
PCT/KR2016/014964
Other languages
English (en)
French (fr)
Other versions
WO2017111443A1 (ko
Inventor
김우겸
김한규
김상호
Original Assignee
주식회사 포스코
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 주식회사 포스코 filed Critical 주식회사 포스코
Priority to CN201680075866.6A priority Critical patent/CN108431276B/zh
Priority to EP16879310.7A priority patent/EP3395988B1/en
Priority to JP2018533626A priority patent/JP6718510B2/ja
Publication of WO2017111443A1 publication Critical patent/WO2017111443A1/ko
Publication of WO2017111443A8 publication Critical patent/WO2017111443A8/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
    • 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
    • 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
    • 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
    • C22C38/06—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
    • 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
    • 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
    • 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

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)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

본 발명은 중량%로, C : 0.03 ~ 0.07%, Si : 0.05 ~ 0.2%, Mn : 1.6 ~ 2.3%, P : 0.008% 이하, S : 0.002% 이하, Al : 0.025% 이하, Cu : 0.1 ~ 0.4%, Ni : 1.4 ~ 2.3%, Mo : 0.08 ~ 0.2%, Nb : 0.01 ~ 0.025%, Ti : 0.008 ~ 0.02%, N: 0.001~0.008%, 나머지 Fe 및 불가피한 불순물을 포함하고, 표면 10mm이내에서의 미세조직은 부피분율로 80%이상의 침상 페라이트 및 20% 이하의 폴리고날 페라이트를 포함하는 열간 저항성이 우수한 고강도 구조용 강판에 관한 것이다.
PCT/KR2016/014964 2015-12-23 2016-12-21 열간 저항성이 우수한 고강도 구조용 강판 및 그 제조방법 WO2017111443A1 (ko)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201680075866.6A CN108431276B (zh) 2015-12-23 2016-12-21 抗热性优异的高强度结构用钢板及其制造方法
EP16879310.7A EP3395988B1 (en) 2015-12-23 2016-12-21 High-strength structural steel sheet excellent in hot resistance and manufacturing method thereof
JP2018533626A JP6718510B2 (ja) 2015-12-23 2016-12-21 熱間抵抗性に優れた高強度構造用鋼板及びその製造方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020150184775A KR101758520B1 (ko) 2015-12-23 2015-12-23 열간 저항성이 우수한 고강도 구조용 강판 및 그 제조방법
KR10-2015-0184775 2015-12-23

Publications (2)

Publication Number Publication Date
WO2017111443A1 WO2017111443A1 (ko) 2017-06-29
WO2017111443A8 true WO2017111443A8 (ko) 2017-10-26

Family

ID=59090640

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PCT/KR2016/014964 WO2017111443A1 (ko) 2015-12-23 2016-12-21 열간 저항성이 우수한 고강도 구조용 강판 및 그 제조방법

Country Status (5)

Country Link
EP (1) EP3395988B1 (ko)
JP (1) JP6718510B2 (ko)
KR (1) KR101758520B1 (ko)
CN (1) CN108431276B (ko)
WO (1) WO2017111443A1 (ko)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6673320B2 (ja) * 2017-02-16 2020-03-25 Ｊｆｅスチール株式会社 厚鋼板および厚鋼板の製造方法
KR101949036B1 (ko) * 2017-10-11 2019-05-08 주식회사 포스코 저온 변형시효 충격특성이 우수한 후강판 및 그 제조방법
KR101999018B1 (ko) * 2017-12-24 2019-07-10 주식회사 포스코 저온인성이 우수한 후강판 및 그 제조방법

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Also Published As

Publication number Publication date
WO2017111443A1 (ko) 2017-06-29
EP3395988A1 (en) 2018-10-31
EP3395988A4 (en) 2019-02-27
KR20170075851A (ko) 2017-07-04
CN108431276A (zh) 2018-08-21
KR101758520B1 (ko) 2017-07-17
JP2019505676A (ja) 2019-02-28
CN108431276B (zh) 2020-04-14
JP6718510B2 (ja) 2020-07-08
EP3395988B1 (en) 2024-02-07
EP3395988C0 (en) 2024-02-07

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