JP2021511441A - 熱間圧延鋼および熱間圧延鋼の製造方法 - Google Patents

熱間圧延鋼および熱間圧延鋼の製造方法 Download PDF

Info

Publication number
JP2021511441A
JP2021511441A JP2020560553A JP2020560553A JP2021511441A JP 2021511441 A JP2021511441 A JP 2021511441A JP 2020560553 A JP2020560553 A JP 2020560553A JP 2020560553 A JP2020560553 A JP 2020560553A JP 2021511441 A JP2021511441 A JP 2021511441A
Authority
JP
Japan
Prior art keywords
hot
rolled steel
mass
mpa
rolling direction
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Withdrawn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
JP2020560553A
Other languages
English (en)
Japanese (ja)
Inventor
トンミ・リーマタイネン
ミッコ・ヘミレ
アリ・ヒルヴィ
テイヨ・リムネル
トゥオモ・サーリネン
トゥオマス・アントラ
パシ・レヒティカンガス
ヴィリ・ケスティ
サカリ・ティヒネン
サイヤ・マルティンマキ
Original Assignee
エスエスアーベー テクノロジー アーベー
エスエスアーベー テクノロジー アーベー
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 エスエスアーベー テクノロジー アーベー, エスエスアーベー テクノロジー アーベー filed Critical エスエスアーベー テクノロジー アーベー
Publication of JP2021511441A publication Critical patent/JP2021511441A/ja
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226Hot rolling
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18Hardening; Quenching with or without subsequent tempering
    • C21D1/19Hardening; Quenching with or without subsequent tempering by interrupted quenching
    • C21D1/20Isothermal quenching, e.g. bainitic hardening
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18Hardening; Quenching with or without subsequent tempering
    • C21D1/25Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/004Heat treatment of ferrous alloys containing Cr and Ni
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/005Heat treatment of ferrous alloys containing Mn
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0205Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0263Modifying 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
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0273Final recrystallisation annealing
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/04Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
    • C21D8/0447Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/001Ferrous alloys, e.g. steel alloys containing N
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/002Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/02Ferrous alloys, e.g. steel alloys containing silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/04Ferrous alloys, e.g. steel alloys containing manganese
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/06Ferrous alloys, e.g. steel alloys containing aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/54Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18Hardening; Quenching with or without subsequent tempering
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D2211/00Microstructure comprising significant phases
    • C21D2211/001Austenite
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D2211/00Microstructure comprising significant phases
    • C21D2211/002Bainite
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D2211/00Microstructure comprising significant phases
    • C21D2211/008Martensite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical 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)
JP2020560553A 2018-01-23 2019-01-16 熱間圧延鋼および熱間圧延鋼の製造方法 Withdrawn JP2021511441A (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP18152884.5 2018-01-23
EP18152884.5A EP3514253B1 (en) 2018-01-23 2018-01-23 Hot-rolled steel & method for manufacturing hot-rolled steel
PCT/EP2019/051006 WO2019145196A1 (en) 2018-01-23 2019-01-16 Hot-rolled steel & method for manufacturing hot-rolled steel

Publications (1)

Publication Number Publication Date
JP2021511441A true JP2021511441A (ja) 2021-05-06

Family

ID=61131953

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2020560553A Withdrawn JP2021511441A (ja) 2018-01-23 2019-01-16 熱間圧延鋼および熱間圧延鋼の製造方法

Country Status (8)

Country Link
US (1) US20230203609A1 (es)
EP (1) EP3514253B1 (es)
JP (1) JP2021511441A (es)
KR (1) KR20200109361A (es)
CN (1) CN111630200B (es)
ES (1) ES2835285T3 (es)
HU (1) HUE052103T2 (es)
WO (1) WO2019145196A1 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA3117043A1 (en) 2018-10-26 2020-04-30 Oerlikon Metco (Us) Inc. Corrosion and wear resistant nickel based alloys
CN112233735B (zh) * 2020-09-07 2022-04-19 包头钢铁(集团)有限责任公司 一种珠光体钢轨钢化学成分的设计方法
CN113528974B (zh) * 2021-06-18 2022-06-21 首钢集团有限公司 一种防护用钢及其制备方法
CN116219279B (zh) * 2022-12-23 2024-04-16 鞍钢股份有限公司 一种高强度高韧性核反应堆安全壳用钢及其制造方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006206942A (ja) * 2005-01-26 2006-08-10 Jfe Steel Kk 耐水素脆性特性に優れた高張力鋼材の製造方法
JP2016509130A (ja) * 2013-01-22 2016-03-24 宝山鋼鉄股▲分▼有限公司 低降伏比を有する超高強靭鋼板及びその製造方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5277648B2 (ja) * 2007-01-31 2013-08-28 Jfeスチール株式会社 耐遅れ破壊特性に優れた高張力鋼板並びにその製造方法
JP4410836B2 (ja) * 2008-04-09 2010-02-03 新日本製鐵株式会社 低温靭性の優れた780MPa級高張力鋼板の製造方法
BR122017002730B1 (pt) * 2008-09-17 2018-02-06 Nippon Steel & Sumitomo Metal Corporation Method of production of a high resistance steel sheet
JP5604849B2 (ja) * 2009-10-22 2014-10-15 Jfeスチール株式会社 水素侵入抑制特性に優れた高張力厚鋼板およびその製造方法
FI122313B (fi) 2010-06-07 2011-11-30 Rautaruukki Oyj Menetelmä kuumavalssatun terästuotteen valmistamiseksi sekä kuumavalssattu teräs
JP5838796B2 (ja) * 2011-12-27 2016-01-06 Jfeスチール株式会社 伸びフランジ性に優れた高強度熱延鋼板およびその製造方法
WO2013099192A1 (ja) * 2011-12-27 2013-07-04 Jfeスチール株式会社 高張力熱延鋼板及びその製造方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006206942A (ja) * 2005-01-26 2006-08-10 Jfe Steel Kk 耐水素脆性特性に優れた高張力鋼材の製造方法
JP2016509130A (ja) * 2013-01-22 2016-03-24 宝山鋼鉄股▲分▼有限公司 低降伏比を有する超高強靭鋼板及びその製造方法

Also Published As

Publication number Publication date
US20230203609A1 (en) 2023-06-29
CN111630200A (zh) 2020-09-04
KR20200109361A (ko) 2020-09-22
EP3514253A1 (en) 2019-07-24
BR112020014887A2 (pt) 2020-12-08
WO2019145196A1 (en) 2019-08-01
CN111630200B (zh) 2022-07-05
HUE052103T2 (hu) 2021-04-28
ES2835285T3 (es) 2021-06-22
EP3514253B1 (en) 2020-10-14

Similar Documents

Publication Publication Date Title
KR101388334B1 (ko) 내지연 파괴 특성이 우수한 고장력 강재 그리고 그 제조 방법
EP2729590B1 (en) Hot-rolled high-strength steel strip with improved haz-softening resistance and method of producing said steel
JP2021511441A (ja) 熱間圧延鋼および熱間圧延鋼の製造方法
US20060016526A1 (en) High-strength steel for welded structures excellent in high temperature strength and method of production of the same
JP5659758B2 (ja) 優れた生産性と溶接性を兼ね備えた、PWHT後の落重特性に優れたTMCP−Temper型高強度厚鋼板の製造方法
JP7045459B2 (ja) 低温での耐破壊特性に優れた極地環境用高強度鋼材及びその製造方法
KR20150029758A (ko) 용접 열영향부 ctod 특성이 우수한 후육 고장력강 및 그의 제조 방법
KR101344537B1 (ko) 고강도 강판 및 그 제조 방법
KR20070091368A (ko) 용접성 및 가스 절단성이 우수한 고장력 내화강 및 그 제조방법
EP3392367B1 (en) High-strength steel material having excellent low-temperature strain aging impact properties and method for manufacturing same
JP7411072B2 (ja) 低温衝撃靭性に優れた高強度極厚物鋼材及びその製造方法
JP2015183279A (ja) 脆性亀裂伝播停止特性に優れる船舶用、海洋構造物用および水圧鉄管用厚鋼板およびその製造方法
KR100630402B1 (ko) 고온 강도가 우수한 고장력 강 및 그 제조 방법
JP4978146B2 (ja) 厚手高強度熱延鋼板およびその製造方法
CA3094517C (en) A steel composition in accordance with api 5l psl-2 specification for x-65 grade having enhanced hydrogen induced cracking (hic) resistance, and method of manufacturing the steel thereof
JP2021509144A (ja) 疲労亀裂伝播抑制特性に優れた構造用高強度鋼材及びその製造方法
KR101505279B1 (ko) 열연강판 및 그 제조 방법
KR102321269B1 (ko) 고강도 강판 및 이의 제조방법
KR20230041060A (ko) 후강판 및 그 제조 방법
KR101585730B1 (ko) 고온 항복강도 및 저온 충격인성이 우수한 후강판 및 이의 제조방법
KR20040004137A (ko) 구조용 Fe-Cr계 강판과 그 제조방법 및 구조용 형강
JP7348947B2 (ja) 脆性破壊抵抗性に優れた構造用鋼材及びその製造方法
KR20230059193A (ko) 강도와 저온 충격인성이 우수한 강재 및 그 제조방법
BR112020014887B1 (pt) Aço laminado a quente & método para fabricação de aço laminado a quente
JP2023067193A (ja) 高強度鋼板およびその製造方法

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20211124

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20221121

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20221206

A601 Written request for extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A601

Effective date: 20230306

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20230407

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20230801

A761 Written withdrawal of application

Free format text: JAPANESE INTERMEDIATE CODE: A761

Effective date: 20230926

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20230926