EP4206351A4 - 980 MPA QUALITY BAINITE HIGH HOLE EXPANSION STEEL AND METHOD FOR MANUFACTURING THE SAME - Google Patents

980 MPA QUALITY BAINITE HIGH HOLE EXPANSION STEEL AND METHOD FOR MANUFACTURING THE SAME Download PDF

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Publication number
EP4206351A4
EP4206351A4 EP21860563.2A EP21860563A EP4206351A4 EP 4206351 A4 EP4206351 A4 EP 4206351A4 EP 21860563 A EP21860563 A EP 21860563A EP 4206351 A4 EP4206351 A4 EP 4206351A4
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European Patent Office
Prior art keywords
mpa
quality
manufacturing
same
high hole
Prior art date
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EP21860563.2A
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German (de)
French (fr)
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EP4206351A1 (en
Inventor
Huanrong WANG
Feng Yang
Chen Zhang
Ana YANG
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Baoshan Iron and Steel Co Ltd
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Baoshan Iron and Steel Co Ltd
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Publication of EP4206351A1 publication Critical patent/EP4206351A1/en
Publication of EP4206351A4 publication Critical patent/EP4206351A4/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
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    • 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
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/08—Iron or steel

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
EP21860563.2A 2020-08-31 2021-08-30 980 MPA QUALITY BAINITE HIGH HOLE EXPANSION STEEL AND METHOD FOR MANUFACTURING THE SAME Pending EP4206351A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010897959.5A CN114107798A (en) 2020-08-31 2020-08-31 980 MPa-grade bainite high-reaming steel and manufacturing method thereof
PCT/CN2021/115433 WO2022042731A1 (en) 2020-08-31 2021-08-30 980 mpa-grade bainite high hole expansion steel and manufacturing method therefor

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EP4206351A1 EP4206351A1 (en) 2023-07-05
EP4206351A4 true EP4206351A4 (en) 2024-03-20

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US (1) US20230313333A1 (en)
EP (1) EP4206351A4 (en)
JP (1) JP7829558B2 (en)
KR (1) KR20230059810A (en)
CN (1) CN114107798A (en)
WO (1) WO2022042731A1 (en)

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CN114892080B (en) * 2022-04-27 2023-06-20 鞍钢股份有限公司 A 720MPa-level precipitation-strengthened hot-rolled bainite steel and its production method
CN114908291B (en) * 2022-04-27 2023-04-14 鞍钢股份有限公司 A kind of 850MPa level precipitation strengthening type hot-rolled bainite steel and its production method
CN114908289B (en) * 2022-04-27 2023-04-14 鞍钢股份有限公司 A kind of 650MPa level precipitation strengthening type hot-rolled bainite steel and its production method
CN117265376A (en) * 2022-06-14 2023-12-22 宝山钢铁股份有限公司 A 1000MPa grade high-expansion hot-rolled multi-phase steel plate and its manufacturing method
CN117305692A (en) * 2022-06-22 2023-12-29 宝山钢铁股份有限公司 Highly expanded hole steel and manufacturing method thereof
CN115647036A (en) * 2022-10-10 2023-01-31 唐山不锈钢有限责任公司 700 MPa-level hot-rolled strip steel and production method thereof
JP7522980B1 (en) * 2022-11-22 2024-07-26 Ｊｆｅスチール株式会社 High strength hot rolled steel sheet and method for producing same
JP7522979B1 (en) * 2022-11-22 2024-07-26 Ｊｆｅスチール株式会社 High strength hot rolled steel sheet and method for producing same
CN116287991A (en) * 2023-02-27 2023-06-23 马鞍山钢铁股份有限公司 A kind of 780MPa grade hot-rolled high hole expansion steel with excellent welding performance and its manufacturing method
CN117165872B (en) * 2023-11-02 2024-02-13 北京科技大学 Single titanium microalloyed corrosion-resistant high-strength steel with high hole expansion rate
CN118291854B (en) * 2024-03-25 2025-10-17 马鞍山钢铁股份有限公司 Low-cost high-formability acid-washing high-strength steel with tensile strength of 450MPa and manufacturing method and application thereof
CN118979190B (en) * 2024-08-26 2025-11-25 北京科技大学 Low-carbon high-hole-expansion steel and its preparation method

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KR20230059810A (en) 2023-05-03
CN114107798A (en) 2022-03-01
JP7829558B2 (en) 2026-03-13
WO2022042731A1 (en) 2022-03-03

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