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EP4206351A4 - 980 mpa-grade bainite high hole expansion steel and manufacturing method therefor - Google Patents

980 mpa-grade bainite high hole expansion steel and manufacturing method therefor 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
Authority
EP
European Patent Office
Prior art keywords
mpa
manufacturing
method therefor
high hole
hole expansion
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
EP21860563.2A
Other languages
German (de)
French (fr)
Other versions
EP4206351A1 (en
Inventor
Huanrong WANG
Feng Yang
Chen Zhang
Ana YANG
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.)
Baoshan Iron and Steel Co Ltd
Original Assignee
Baoshan Iron and Steel 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 Baoshan Iron and Steel Co Ltd filed Critical Baoshan Iron and Steel Co Ltd
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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    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
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    • 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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  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (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-grade bainite high hole expansion steel and manufacturing method therefor Pending EP4206351A4 (en)

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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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CN114774788B (en) * 2022-04-25 2023-08-29 马鞍山钢铁股份有限公司 900 MPa-level high-surface-quality pickled steel for automobiles and manufacturing method and application thereof
CN114908289B (en) * 2022-04-27 2023-04-14 鞍钢股份有限公司 650 MPa-level precipitation strengthening hot-rolled bainite steel and production method thereof
CN114908291B (en) * 2022-04-27 2023-04-14 鞍钢股份有限公司 850 MPa-level precipitation strengthening type hot-rolled bainite steel and production method thereof
CN114892080B (en) * 2022-04-27 2023-06-20 鞍钢股份有限公司 720 MPa-grade precipitation-strengthening type hot rolled bainitic steel and production 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
WO2024111526A1 (en) * 2022-11-22 2024-05-30 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 780 MPa-grade hot rolled high-reaming steel with excellent welding performance and manufacturing method thereof
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

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US20230313333A1 (en) 2023-10-05
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WO2022042731A1 (en) 2022-03-03
CN114107798A (en) 2022-03-01

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