EP4488394A4 - METHOD FOR ANNEALING HOT-ROLLED STEEL STRIP - Google Patents

METHOD FOR ANNEALING HOT-ROLLED STEEL STRIP

Info

Publication number
EP4488394A4
EP4488394A4 EP23780654.2A EP23780654A EP4488394A4 EP 4488394 A4 EP4488394 A4 EP 4488394A4 EP 23780654 A EP23780654 A EP 23780654A EP 4488394 A4 EP4488394 A4 EP 4488394A4
Authority
EP
European Patent Office
Prior art keywords
rolled steel
steel strip
annealing hot
annealing
hot
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
EP23780654.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP4488394A1 (en
Inventor
Hirokazu Kobayashi
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.)
JFE Steel Corp
Original Assignee
JFE Steel Corp
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 JFE Steel Corp filed Critical JFE Steel Corp
Publication of EP4488394A1 publication Critical patent/EP4488394A1/en
Publication of EP4488394A4 publication Critical patent/EP4488394A4/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/60—Continuous furnaces for strip or wire with induction heating
    • 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
    • C21D1/34—Methods of heating
    • C21D1/42—Induction heating
    • 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
    • C21D11/00—Process control or regulation for heat treatments
    • 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
    • C21D6/008—Heat treatment of ferrous alloys containing Si
    • 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
    • C21D8/12—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1216—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties characterised by the working steps
    • C21D8/1222—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
    • C21D8/12—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1244—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties characterised by the heat treatment
    • C21D8/1261—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties 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
    • 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
    • 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
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling
    • 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
    • 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
    • C21D1/34—Methods of heating
    • 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
    • C21D1/34—Methods of heating
    • C21D1/40—Direct resistance heating
    • 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
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/62—Continuous furnaces for strip or wire with direct resistance heating

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)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
EP23780654.2A 2022-03-31 2023-03-29 METHOD FOR ANNEALING HOT-ROLLED STEEL STRIP Pending EP4488394A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022059371 2022-03-31
PCT/JP2023/012737 WO2023190645A1 (ja) 2022-03-31 2023-03-29 熱延鋼帯の焼鈍方法

Publications (2)

Publication Number Publication Date
EP4488394A1 EP4488394A1 (en) 2025-01-08
EP4488394A4 true EP4488394A4 (en) 2025-06-25

Family

ID=88201997

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23780654.2A Pending EP4488394A4 (en) 2022-03-31 2023-03-29 METHOD FOR ANNEALING HOT-ROLLED STEEL STRIP

Country Status (4)

Country Link
US (1) US20250230519A1 (https=)
EP (1) EP4488394A4 (https=)
JP (1) JP7673823B2 (https=)
WO (1) WO2023190645A1 (https=)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003147440A (ja) * 2001-11-05 2003-05-21 Kawasaki Steel Corp 材質安定化システム
JP2006206997A (ja) * 2005-01-31 2006-08-10 Jfe Steel Kk 方向性電磁鋼スラブの加熱方法
US20100101690A1 (en) * 2007-04-05 2010-04-29 Shigenobu Koga Method for continously annealing steel strip having a curie point and continous annealing facility of the same
JP2011179035A (ja) * 2010-02-26 2011-09-15 Jfe Steel Corp 連続焼鈍炉の板温制御方法及び連続焼鈍炉
JP2018066040A (ja) * 2016-10-19 2018-04-26 Ｊｆｅスチール株式会社 Ｓｉ含有熱延鋼板の熱延板焼鈍設備、熱延板焼鈍方法および脱スケール方法
JP2018123364A (ja) * 2017-01-31 2018-08-09 Ｊｆｅスチール株式会社 鋼板の温度制御方法、及び、鋼板の温度制御装置
JP2021123764A (ja) * 2020-02-06 2021-08-30 日本製鉄株式会社 無方向性電磁鋼板及びその製造方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3260605B2 (ja) * 1995-10-27 2002-02-25 新日本製鐵株式会社 コイル内材質の均一性が良い冷延鋼板の製造方法
EP2557183A1 (de) * 2011-08-12 2013-02-13 Siemens Aktiengesellschaft Verfahren zum Betrieb einer Konti-Glühe für die Verarbeitung eines Walzguts
JP6160649B2 (ja) 2014-05-19 2017-07-12 Ｊｆｅスチール株式会社 方向性電磁鋼板の製造方法
JP6572864B2 (ja) * 2016-10-18 2019-09-11 Ｊｆｅスチール株式会社 電磁鋼板製造用の熱延鋼板およびその製造方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003147440A (ja) * 2001-11-05 2003-05-21 Kawasaki Steel Corp 材質安定化システム
JP2006206997A (ja) * 2005-01-31 2006-08-10 Jfe Steel Kk 方向性電磁鋼スラブの加熱方法
US20100101690A1 (en) * 2007-04-05 2010-04-29 Shigenobu Koga Method for continously annealing steel strip having a curie point and continous annealing facility of the same
JP2011179035A (ja) * 2010-02-26 2011-09-15 Jfe Steel Corp 連続焼鈍炉の板温制御方法及び連続焼鈍炉
JP2018066040A (ja) * 2016-10-19 2018-04-26 Ｊｆｅスチール株式会社 Ｓｉ含有熱延鋼板の熱延板焼鈍設備、熱延板焼鈍方法および脱スケール方法
JP2018123364A (ja) * 2017-01-31 2018-08-09 Ｊｆｅスチール株式会社 鋼板の温度制御方法、及び、鋼板の温度制御装置
JP2021123764A (ja) * 2020-02-06 2021-08-30 日本製鉄株式会社 無方向性電磁鋼板及びその製造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2023190645A1 *

Also Published As

Publication number Publication date
US20250230519A1 (en) 2025-07-17
EP4488394A1 (en) 2025-01-08
JPWO2023190645A1 (https=) 2023-10-05
JP7673823B2 (ja) 2025-05-09
WO2023190645A1 (ja) 2023-10-05

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RIC1 Information provided on ipc code assigned before grant

Ipc: C21D 9/62 20060101ALN20250519BHEP

Ipc: C21D 1/40 20060101ALN20250519BHEP

Ipc: C21D 1/34 20060101ALN20250519BHEP

Ipc: C22C 38/02 20060101ALI20250519BHEP

Ipc: C21D 1/42 20060101ALI20250519BHEP

Ipc: C21D 9/60 20060101ALI20250519BHEP

Ipc: C21D 9/46 20060101ALI20250519BHEP

Ipc: C21D 6/00 20060101ALI20250519BHEP

Ipc: C21D 9/573 20060101ALI20250519BHEP

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