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WO2008149733A1 - 高清浄度鋼の製造方法 - Google Patents

高清浄度鋼の製造方法 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)
French (fr)
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/ja
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

　本発明は、非金属介在物の低減を十分行って、清浄度の高い鋼を製造する。転炉１から出鋼した溶鋼に対して取鍋精錬を行った後、還流式真空脱ガス装置で真空脱ガス精錬することで高清浄度鋼を製造する高清浄度鋼の製造方法において、取鍋精錬後のＡｌの成分値が０．０３０％～０．０７０％となるように精錬すると共に、取鍋精錬後のスラグの組成であるＦｅＯ、ＭｎＯ、ＣａＯ、ＳｉＯ2、ＭｇＯ、Ａｌ2Ｏ3、ＴｉＯ2を最適化する。また、真空脱ガス精錬の際に、攪拌時間及び溶鋼還流量を最適化する。
PCT/JP2008/059737 2007-06-05 2008-05-27 高清浄度鋼の製造方法 Ceased WO2008149733A1 (ja)

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 (ja) 2008-12-11

Family

ID=40093553

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/059737 Ceased WO2008149733A1 (ja) 2007-06-05 2008-05-27 高清浄度鋼の製造方法

Country Status (2)

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

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 (ja) * 2020-06-16 2021-12-23 Ｊｆｅスチール株式会社 高清浄度鋼の製造方法
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 (ja) * 2020-09-28 2022-03-31 Ｊｆｅスチール株式会社 鋳片の製造方法

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 (ja) * 2020-06-16 2021-12-23 Ｊｆｅスチール株式会社 高清浄度鋼の製造方法
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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