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WO2008149733A1 - Processus de fabrication d'un acier de grande propreté - Google Patents

Processus de fabrication d'un acier de grande propreté Download PDF

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Publication number
WO2008149733A1
WO2008149733A1 PCT/JP2008/059737 JP2008059737W WO2008149733A1 WO 2008149733 A1 WO2008149733 A1 WO 2008149733A1 JP 2008059737 W JP2008059737 W JP 2008059737W WO 2008149733 A1 WO2008149733 A1 WO 2008149733A1
Authority
WO
WIPO (PCT)
Prior art keywords
refining
high cleanliness
steel
vacuum degassing
optimized
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.)
Ceased
Application number
PCT/JP2008/059737
Other languages
English (en)
Japanese (ja)
Inventor
Hiroaki Matsumoto
Sei Kimura
Tsuyoshi Mimura
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Publication of WO2008149733A1 publication Critical patent/WO2008149733A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0075—Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0087—Treatment of slags covering the steel bath, e.g. for separating slag from the molten metal
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/10—Handling in a vacuum

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

L'invention concerne la fabrication d'un acier de grande propreté par élimination satisfaisante des inclusions non métalliques. L'invention concerne donc un processus de fabrication d'un acier de grande propreté qui comprend l'étape consistant à soumettre un acier fondu qui sort d'un convertisseur (1) à un raffinage en poche, puis à un raffinage par dégazage sous vide en utilisant une unité de dégazage sous vide à reflux afin d'obtenir un acier de grande propreté. Selon l'invention, le raffinage est réalisé de manière à ce que la teneur en Al après le raffinage en poche soit comprise entre 0,030 et 0,070 % et les FeO, MnO, CaO, SiO2, MgO, Al2O3 et TiO2 qui constituent les scories après le raffinage en poche sont optimisés. En outre, lors du raffinage par dégazage sous vide, la période d'agitation et le taux de reflux de l'acier fondu sont optimisés.
PCT/JP2008/059737 2007-06-05 2008-05-27 Processus de fabrication d'un acier de grande propreté Ceased WO2008149733A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-149302 2007-06-05
JP2007149302A JP4257368B2 (ja) 2007-06-05 2007-06-05 高清浄度鋼の製造方法

Publications (1)

Publication Number Publication Date
WO2008149733A1 true WO2008149733A1 (fr) 2008-12-11

Family

ID=40093553

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/059737 Ceased WO2008149733A1 (fr) 2007-06-05 2008-05-27 Processus de fabrication d'un acier de grande propreté

Country Status (2)

Country Link
JP (1) JP4257368B2 (fr)
WO (1) WO2008149733A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101979696A (zh) * 2010-09-29 2011-02-23 山西太钢不锈钢股份有限公司 一种镍系低温压力容器用钢的精炼与浇铸方法
CN113444857A (zh) * 2021-06-22 2021-09-28 中天钢铁集团有限公司 一种提高铝脱氧高碳铬轴承钢连浇炉数的生产工艺
WO2021256158A1 (fr) * 2020-06-16 2021-12-23 Ｊｆｅスチール株式会社 Procédé de fabrication d'acier de haute propreté
CN114774619A (zh) * 2022-04-29 2022-07-22 中国铁建重工集团股份有限公司 一种低氮高碳铬轴承钢及其生产方法
CN115702252A (zh) * 2020-06-16 2023-02-14 杰富意钢铁株式会社 高洁净度钢的制造方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6330559B2 (ja) * 2014-08-04 2018-05-30 新日鐵住金株式会社 脱窒精錬方法
JP6825399B2 (ja) * 2017-02-09 2021-02-03 日本製鉄株式会社 清浄鋼の溶製方法
CN108424996B (zh) * 2018-04-04 2021-01-05 中冶南方工程技术有限公司 用于rh真空精炼的全干式机械真空泵抽气过程的仿真方法
WO2022065511A1 (fr) * 2020-09-28 2022-03-31 Ｊｆｅスチール株式会社 Procédé de fabrication de brame

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60194047A (ja) * 1984-03-14 1985-10-02 Aichi Steel Works Ltd 高品質軸受鋼およびその製造法
JPH06145883A (ja) * 1992-11-02 1994-05-27 Daido Steel Co Ltd 高清浄度軸受鋼およびその製造方法
JPH08283826A (ja) * 1995-04-10 1996-10-29 Sumitomo Metal Ind Ltd 高清浄極低硫耐ｈｉｃ鋼の製造方法
JP2000129336A (ja) * 1998-10-30 2000-05-09 Kawasaki Steel Corp 高清浄度鋼の溶製方法
JP2002180122A (ja) * 2000-12-07 2002-06-26 Kawasaki Steel Corp 高清浄度鋼の製造方法
JP2008133505A (ja) * 2006-11-28 2008-06-12 Kobe Steel Ltd 高清浄度鋼の製造方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60194047A (ja) * 1984-03-14 1985-10-02 Aichi Steel Works Ltd 高品質軸受鋼およびその製造法
JPH06145883A (ja) * 1992-11-02 1994-05-27 Daido Steel Co Ltd 高清浄度軸受鋼およびその製造方法
JPH08283826A (ja) * 1995-04-10 1996-10-29 Sumitomo Metal Ind Ltd 高清浄極低硫耐ｈｉｃ鋼の製造方法
JP2000129336A (ja) * 1998-10-30 2000-05-09 Kawasaki Steel Corp 高清浄度鋼の溶製方法
JP2002180122A (ja) * 2000-12-07 2002-06-26 Kawasaki Steel Corp 高清浄度鋼の製造方法
JP2008133505A (ja) * 2006-11-28 2008-06-12 Kobe Steel Ltd 高清浄度鋼の製造方法

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101979696A (zh) * 2010-09-29 2011-02-23 山西太钢不锈钢股份有限公司 一种镍系低温压力容器用钢的精炼与浇铸方法
CN101979696B (zh) * 2010-09-29 2012-07-25 山西太钢不锈钢股份有限公司 一种镍系低温压力容器用钢的精炼与浇铸方法
WO2021256158A1 (fr) * 2020-06-16 2021-12-23 Ｊｆｅスチール株式会社 Procédé de fabrication d'acier de haute propreté
JP7028376B1 (ja) * 2020-06-16 2022-03-02 Ｊｆｅスチール株式会社 高清浄度鋼の製造方法
CN115702252A (zh) * 2020-06-16 2023-02-14 杰富意钢铁株式会社 高洁净度钢的制造方法
CN115702252B (zh) * 2020-06-16 2024-04-02 杰富意钢铁株式会社 高洁净度钢的制造方法
CN113444857A (zh) * 2021-06-22 2021-09-28 中天钢铁集团有限公司 一种提高铝脱氧高碳铬轴承钢连浇炉数的生产工艺
CN114774619A (zh) * 2022-04-29 2022-07-22 中国铁建重工集团股份有限公司 一种低氮高碳铬轴承钢及其生产方法
CN114774619B (zh) * 2022-04-29 2023-10-24 中国铁建重工集团股份有限公司 一种低氮高碳铬轴承钢及其生产方法

Also Published As

Publication number Publication date
JP4257368B2 (ja) 2009-04-22
JP2008303406A (ja) 2008-12-18

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