GB2410503B - High-cleanliness steel and process for producing the same - Google Patents

High-cleanliness steel and process for producing the same

Info

Publication number
GB2410503B
GB2410503B GB0509771A GB0509771A GB2410503B GB 2410503 B GB2410503 B GB 2410503B GB 0509771 A GB0509771 A GB 0509771A GB 0509771 A GB0509771 A GB 0509771A GB 2410503 B GB2410503 B GB 2410503B
Authority
GB
United Kingdom
Prior art keywords
producing
same
cleanliness steel
cleanliness
steel
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.)
Expired - Lifetime
Application number
GB0509771A
Other versions
GB0509771D0 (en
GB2410503A (en
Inventor
Ichiro Sato
Kaichiro Ishido
Tomomi Mori
Toshihiro Irie
Kazuya Kodama
Kiyoshi Kawakami
Shuhei Kitano
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.)
Sanyo Special Steel Co Ltd
Original Assignee
Sanyo Special Steel 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
Priority claimed from JP2000167087A external-priority patent/JP2001342514A/en
Priority claimed from JP2000167089A external-priority patent/JP2001342515A/en
Priority claimed from JP2000167085A external-priority patent/JP2001342512A/en
Priority claimed from JP2000167088A external-priority patent/JP2001342516A/en
Priority claimed from JP2000167086A external-priority patent/JP4562244B2/en
Application filed by Sanyo Special Steel Co Ltd filed Critical Sanyo Special Steel Co Ltd
Priority claimed from GB0500783A external-priority patent/GB2406580B/en
Publication of GB0509771D0 publication Critical patent/GB0509771D0/en
Publication of GB2410503A publication Critical patent/GB2410503A/en
Application granted granted Critical
Publication of GB2410503B publication Critical patent/GB2410503B/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C21C7/10—Handling in a vacuum
    • 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
GB0509771A 2000-06-05 2001-06-05 High-cleanliness steel and process for producing the same Expired - Lifetime GB2410503B (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2000167089A JP2001342515A (en) 2000-06-05 2000-06-05 Highly clean steel and production method
JP2000167085A JP2001342512A (en) 2000-06-05 2000-06-05 Highly clean steel and production method
JP2000167088A JP2001342516A (en) 2000-06-05 2000-06-05 Highly clean steel and production method
JP2000167086A JP4562244B2 (en) 2000-06-05 2000-06-05 Manufacturing method of high cleanliness steel
JP2000167087A JP2001342514A (en) 2000-06-05 2000-06-05 Highly clean steel and production method
GB0500783A GB2406580B (en) 2000-06-05 2001-06-05 High-cleanliness steel and process for producing the same

Publications (3)

Publication Number Publication Date
GB0509771D0 GB0509771D0 (en) 2005-06-22
GB2410503A GB2410503A (en) 2005-08-03
GB2410503B true GB2410503B (en) 2005-09-07

Family

ID=34743970

Family Applications (3)

Application Number Title Priority Date Filing Date
GB0509771A Expired - Lifetime GB2410503B (en) 2000-06-05 2001-06-05 High-cleanliness steel and process for producing the same
GB0509770A Expired - Lifetime GB2410252B (en) 2000-06-05 2001-06-05 High-cleanliness steel and process for producing the same
GB0509772A Expired - Fee Related GB2410253B (en) 2000-06-05 2001-06-05 High-cleanliness steel and process for producing the same

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB0509770A Expired - Lifetime GB2410252B (en) 2000-06-05 2001-06-05 High-cleanliness steel and process for producing the same
GB0509772A Expired - Fee Related GB2410253B (en) 2000-06-05 2001-06-05 High-cleanliness steel and process for producing the same

Country Status (1)

Country Link
GB (3) GB2410503B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BRPI0712343B1 (en) * 2006-06-09 2014-09-02 Kobe Steel Ltd HIGH CLEANING STEEL SPRING
CN102808062B (en) * 2012-07-19 2014-03-05 中国科学院金属研究所 Method for controlling A segregation of steel ingots by purification of molten steel
CN114875197B (en) * 2022-05-10 2023-11-14 江苏利淮钢铁有限公司 Technological method for controlling inclusion types in steel to improve purity of molten steel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0325242A2 (en) * 1988-01-21 1989-07-26 Nkk Corporation Method for refining molten steel in a vacuum
EP0548868A2 (en) * 1991-12-24 1993-06-30 Kawasaki Steel Corporation Method of refining of high purity steel
JP2000129335A (en) * 1998-10-20 2000-05-09 Nkk Corp Production of extra-low sulfur steel excellent in cleanliness

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3347718C2 (en) * 1983-09-02 1986-05-28 Ulrich Dipl.-Ing. 5905 Freudenberg Glasmeyer Process for the production of steels with a high degree of purity and low gas content in steelworks and steel foundries
DE3480350D1 (en) * 1984-05-25 1989-12-07 China Steel Corp Two stage deoxidation process in steel-making
JPS6396210A (en) * 1986-10-09 1988-04-27 Sumitomo Metal Ind Ltd Pre-deoxidizing method in converter interior
JPH02179813A (en) * 1988-12-28 1990-07-12 Nippon Steel Corp Method for refining molten metal into high purity and high cleanliness
JP2847774B2 (en) * 1989-07-07 1999-01-20 住友金属工業株式会社 Refining method of molten metal
JPH10237533A (en) * 1997-02-27 1998-09-08 Sumitomo Metal Ind Ltd Production of hic resistant steel
JPH1192811A (en) * 1997-09-12 1999-04-06 Sumitomo Metal Ind Ltd Refinement of molten metal

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0325242A2 (en) * 1988-01-21 1989-07-26 Nkk Corporation Method for refining molten steel in a vacuum
EP0548868A2 (en) * 1991-12-24 1993-06-30 Kawasaki Steel Corporation Method of refining of high purity steel
JP2000129335A (en) * 1998-10-20 2000-05-09 Nkk Corp Production of extra-low sulfur steel excellent in cleanliness

Also Published As

Publication number Publication date
GB0509771D0 (en) 2005-06-22
GB2410252A (en) 2005-07-27
GB2410252B (en) 2005-09-07
GB0509772D0 (en) 2005-06-22
GB2410253A (en) 2005-07-27
GB2410253B (en) 2005-09-14
GB0509770D0 (en) 2005-06-22
GB2410503A (en) 2005-08-03

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20210604