EP3770280A4 - PROCESS FOR THE MANUFACTURING OF HIGH PURITY STEEL - Google Patents

PROCESS FOR THE MANUFACTURING OF HIGH PURITY STEEL Download PDF

Info

Publication number
EP3770280A4
EP3770280A4 EP19770761.5A EP19770761A EP3770280A4 EP 3770280 A4 EP3770280 A4 EP 3770280A4 EP 19770761 A EP19770761 A EP 19770761A EP 3770280 A4 EP3770280 A4 EP 3770280A4
Authority
EP
European Patent Office
Prior art keywords
manufacturing
high purity
purity steel
steel
purity
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.)
Granted
Application number
EP19770761.5A
Other languages
German (de)
French (fr)
Other versions
EP3770280A1 (en
EP3770280B1 (en
Inventor
Yoichi Ito
Masayuki Fukami
Mitsuhiro Okatsu
Kimihito Shirasaki
Masahito Tanaka
Norichika Aramaki
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 EP3770280A1 publication Critical patent/EP3770280A1/en
Publication of EP3770280A4 publication Critical patent/EP3770280A4/en
Application granted granted Critical
Publication of EP3770280B1 publication Critical patent/EP3770280B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • 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
    • C21C7/06—Deoxidising, e.g. killing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • 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
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/064—Dephosphorising; Desulfurising
    • 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)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
EP19770761.5A 2018-03-23 2019-03-20 Method for manufacturing high-purity steel Active EP3770280B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018057080 2018-03-23
PCT/JP2019/011852 WO2019182056A1 (en) 2018-03-23 2019-03-20 Method for manufacturing high-purity steel

Publications (3)

Publication Number Publication Date
EP3770280A1 EP3770280A1 (en) 2021-01-27
EP3770280A4 true EP3770280A4 (en) 2021-01-27
EP3770280B1 EP3770280B1 (en) 2023-05-10

Family

ID=67987249

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19770761.5A Active EP3770280B1 (en) 2018-03-23 2019-03-20 Method for manufacturing high-purity steel

Country Status (4)

Country Link
EP (1) EP3770280B1 (en)
JP (1) JP6648866B1 (en)
KR (1) KR102410083B1 (en)
WO (1) WO2019182056A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114318108A (en) * 2021-12-02 2022-04-12 包头钢铁（集团）有限责任公司 Production method of ultra-low-aluminum high-purity industrial pure iron
CN114292982B (en) * 2022-01-04 2023-04-28 马鞍山钢铁股份有限公司 Control method for steel shot defects for battery case of new energy automobile
CN116770009A (en) * 2023-07-19 2023-09-19 中国第一重型机械股份公司 Large carbon-manganese steel tube plate steel ingot and production method thereof
CN118345299B (en) * 2024-04-19 2025-01-24 华北理工大学 A production method for continuous casting of low-carbon high-aluminum wear-resistant steel billets greater than 1000MPa

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH108196A (en) * 1996-06-25 1998-01-13 Sumitomo Metal Ind Ltd HIC-resistant steel excellent in low-temperature toughness of welds and method for producing the same
JPH10237533A (en) * 1997-02-27 1998-09-08 Sumitomo Metal Ind Ltd Method for producing HIC-resistant steel
US20120298320A1 (en) * 2008-07-15 2012-11-29 Masafumi Miyazaki Low-carbon steel slab producing method
US20170029919A1 (en) * 2014-06-18 2017-02-02 Institute of Research of Iron and Steel, Jiangsu Province/Sha-Steel, Co. Ltd. A steel rebar and a production method thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3666372B2 (en) 2000-08-18 2005-06-29 住友金属工業株式会社 Oil well steel with excellent resistance to sulfide stress corrosion cracking and its manufacturing method
JP5458607B2 (en) * 2009-03-09 2014-04-02 Ｊｆｅスチール株式会社 Manufacturing method of clean steel with excellent resistance to sulfide corrosion cracking
JP5397154B2 (en) 2009-10-23 2014-01-22 新日鐵住金株式会社 Melting method of steel material for oil pipes with high strength and high corrosion resistance
JP6642174B2 (en) * 2016-03-24 2020-02-05 日本製鉄株式会社 Continuous casting method of high carbon molten steel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH108196A (en) * 1996-06-25 1998-01-13 Sumitomo Metal Ind Ltd HIC-resistant steel excellent in low-temperature toughness of welds and method for producing the same
JPH10237533A (en) * 1997-02-27 1998-09-08 Sumitomo Metal Ind Ltd Method for producing HIC-resistant steel
US20120298320A1 (en) * 2008-07-15 2012-11-29 Masafumi Miyazaki Low-carbon steel slab producing method
US20170029919A1 (en) * 2014-06-18 2017-02-02 Institute of Research of Iron and Steel, Jiangsu Province/Sha-Steel, Co. Ltd. A steel rebar and a production method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2019182056A1 *

Also Published As

Publication number Publication date
JPWO2019182056A1 (en) 2020-04-30
KR102410083B1 (en) 2022-06-16
JP6648866B1 (en) 2020-02-14
EP3770280A1 (en) 2021-01-27
WO2019182056A1 (en) 2019-09-26
KR20200124753A (en) 2020-11-03
EP3770280B1 (en) 2023-05-10

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