EP4613905A4 - Acier inoxydable austénitique et son procédé de fabrication - Google Patents

Acier inoxydable austénitique et son procédé de fabrication

Info

Publication number
EP4613905A4
EP4613905A4 EP23907346.3A EP23907346A EP4613905A4 EP 4613905 A4 EP4613905 A4 EP 4613905A4 EP 23907346 A EP23907346 A EP 23907346A EP 4613905 A4 EP4613905 A4 EP 4613905A4
Authority
EP
European Patent Office
Prior art keywords
stainless steel
manufacturing processes
austenitic stainless
austenitic
processes
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
EP23907346.3A
Other languages
German (de)
English (en)
Other versions
EP4613905A1 (fr
Inventor
Youngjin Kwon
Jongsu Paek
Jonghee Kim
Jinsuk Kim
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.)
Posco Holdings Inc
Original Assignee
Posco 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 Posco Co Ltd filed Critical Posco Co Ltd
Publication of EP4613905A1 publication Critical patent/EP4613905A1/fr
Publication of EP4613905A4 publication Critical patent/EP4613905A4/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • 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
    • C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
    • 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
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties of ferrous metals or ferrous alloys 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties of ferrous metals or ferrous alloys 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 of ferrous metals or ferrous alloys 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
    • 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0273—Final recrystallisation annealing
    • 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
    • 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
    • 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

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 Sheet Steel (AREA)
  • Heat Treatment Of Steel (AREA)
EP23907346.3A 2022-12-21 2023-10-17 Acier inoxydable austénitique et son procédé de fabrication Pending EP4613905A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020220180013A KR20240098332A (ko) 2022-12-21 2022-12-21 오스테나이트계 스테인리스강 및 이의 제조방법
PCT/KR2023/016065 WO2024136060A1 (fr) 2022-12-21 2023-10-17 Acier inoxydable austénitique et son procédé de fabrication

Publications (2)

Publication Number Publication Date
EP4613905A1 EP4613905A1 (fr) 2025-09-10
EP4613905A4 true EP4613905A4 (fr) 2026-04-29

Family

ID=91589040

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23907346.3A Pending EP4613905A4 (fr) 2022-12-21 2023-10-17 Acier inoxydable austénitique et son procédé de fabrication

Country Status (5)

Country Link
EP (1) EP4613905A4 (fr)
JP (1) JP2026500399A (fr)
KR (1) KR20240098332A (fr)
CN (1) CN120303435A (fr)
WO (1) WO2024136060A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019112152A1 (fr) * 2017-12-04 2019-06-13 주식회사 포스코 Acier inoxydable austénitique ayant d'excellentes aptitude au formage et résistance à la crique saisonnière
WO2019112142A1 (fr) * 2017-12-06 2019-06-13 주식회사 포스코 Acier inoxydable austénitique à dureté élevée présentant une excellente résistance à la corrosion
WO2021019849A1 (fr) * 2019-07-31 2021-02-04 Ｊｆｅスチール株式会社 Feuille d'acier inoxydable austénitique pour substrat de séparateur de pile à combustible
WO2021215203A1 (fr) * 2020-04-20 2021-10-28 日鉄ステンレス株式会社 Acier inoxydable austénitique et ressort
EP3916136A1 (fr) * 2019-01-21 2021-12-01 JFE Steel Corporation Tôle d'acier inoxydable austénitique destinée à un séparateur de pile à combustible et procédé de production d'une telle tôle d'acier inoxydable austénitique
WO2022131204A1 (fr) * 2020-12-15 2022-06-23 Ｊｆｅスチール株式会社 Tôle d'acier inoxydable pour séparateur de pile à combustible

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5217755B2 (ja) * 2008-08-06 2013-06-19 新日鐵住金株式会社 燃料電池セパレータ用ステンレス鋼および燃料電池用セパレータ
KR101588093B1 (ko) * 2013-12-24 2016-01-22 주식회사 포스코 연료전지용 오스테나이트계 스테인리스강 및 그 제조방법
KR102102608B1 (ko) * 2019-12-20 2020-04-22 현대비앤지스틸 주식회사 고분자 연료전지 분리판용 스테인리스강 제조 방법

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019112152A1 (fr) * 2017-12-04 2019-06-13 주식회사 포스코 Acier inoxydable austénitique ayant d'excellentes aptitude au formage et résistance à la crique saisonnière
WO2019112142A1 (fr) * 2017-12-06 2019-06-13 주식회사 포스코 Acier inoxydable austénitique à dureté élevée présentant une excellente résistance à la corrosion
EP3916136A1 (fr) * 2019-01-21 2021-12-01 JFE Steel Corporation Tôle d'acier inoxydable austénitique destinée à un séparateur de pile à combustible et procédé de production d'une telle tôle d'acier inoxydable austénitique
WO2021019849A1 (fr) * 2019-07-31 2021-02-04 Ｊｆｅスチール株式会社 Feuille d'acier inoxydable austénitique pour substrat de séparateur de pile à combustible
WO2021215203A1 (fr) * 2020-04-20 2021-10-28 日鉄ステンレス株式会社 Acier inoxydable austénitique et ressort
WO2022131204A1 (fr) * 2020-12-15 2022-06-23 Ｊｆｅスチール株式会社 Tôle d'acier inoxydable pour séparateur de pile à combustible

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2024136060A1 *

Also Published As

Publication number Publication date
CN120303435A (zh) 2025-07-11
WO2024136060A1 (fr) 2024-06-27
EP4613905A1 (fr) 2025-09-10
JP2026500399A (ja) 2026-01-06
KR20240098332A (ko) 2024-06-28

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RIC1 Information provided on ipc code assigned before grant

Ipc: C22C 38/42 20060101AFI20260325BHEP

Ipc: C22C 38/04 20060101ALI20260325BHEP

Ipc: C22C 38/02 20060101ALI20260325BHEP

Ipc: C22C 38/00 20060101ALI20260325BHEP

Ipc: C21D 9/46 20060101ALI20260325BHEP

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