BR8900249A - PROCESS FOR REFINING CAST STEEL IN A VACUUM - Google Patents

PROCESS FOR REFINING CAST STEEL IN A VACUUM

Info

Publication number
BR8900249A
BR8900249A BR898900249A BR8900249A BR8900249A BR 8900249 A BR8900249 A BR 8900249A BR 898900249 A BR898900249 A BR 898900249A BR 8900249 A BR8900249 A BR 8900249A BR 8900249 A BR8900249 A BR 8900249A
Authority
BR
Brazil
Prior art keywords
vacuum
cast steel
refining cast
refining
steel
Prior art date
Application number
BR898900249A
Other languages
Portuguese (pt)
Inventor
Toshio Ishii
Yutaka Okubo
Shuzo Fukuda
Yoshihiko Kawai
Original Assignee
Nippon Kokan Kk
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 Nippon Kokan Kk filed Critical Nippon Kokan Kk
Publication of BR8900249A publication Critical patent/BR8900249A/en

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Continuous Casting (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
BR898900249A 1988-01-21 1989-01-19 PROCESS FOR REFINING CAST STEEL IN A VACUUM BR8900249A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP63009675A JPH01188619A (en) 1988-01-21 1988-01-21 Method for rh vacuum degasification
JP1031105A JPH02211974A (en) 1988-01-21 1989-02-13 Method for purifying molten metal by reduction of pressure

Publications (1)

Publication Number Publication Date
BR8900249A true BR8900249A (en) 1989-09-19

Family

ID=39689269

Family Applications (1)

Application Number Title Priority Date Filing Date
BR898900249A BR8900249A (en) 1988-01-21 1989-01-19 PROCESS FOR REFINING CAST STEEL IN A VACUUM

Country Status (6)

Country Link
EP (1) EP0325242A3 (en)
JP (2) JPH01188619A (en)
KR (1) KR930005067B1 (en)
AU (1) AU601893B2 (en)
BR (1) BR8900249A (en)
CA (1) CA1338397C (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5077255A (en) * 1986-09-09 1991-12-31 Exxon Chemical Patents Inc. New supported polymerization catalyst
US5221326A (en) * 1990-05-17 1993-06-22 Kawasaki Steel Corporation Method of producing ultra-low-carbon steel
DE19856073A1 (en) * 1998-12-04 2000-06-15 Technometal Ges Fuer Metalltec Process for denitrifying molten steel
US7396378B2 (en) * 2000-06-05 2008-07-08 Sanyo Special Steel Co., Ltd. Process for producing a high cleanliness steel
GB2406580B (en) * 2000-06-05 2005-09-07 Sanyo Special Steel Co Ltd High-cleanliness steel and process for producing the same
GB2410253B (en) * 2000-06-05 2005-09-14 Sanyo Special Steel Co Ltd High-cleanliness steel and process for producing the same
EP1568790A1 (en) * 2004-02-24 2005-08-31 Paul Wurth S.A. Apparatus for the treatment of liquid metal in a ladle
CN102296159B (en) * 2010-06-25 2013-05-01 鞍钢股份有限公司 Handling method for blockage of insertion tube
KR101881971B1 (en) * 2016-11-09 2018-08-24 주식회사 포스코 Casting apparatus and casging method using the same
CN113957203B (en) * 2021-12-21 2022-03-15 太原科技大学 Multifunctional non-centrosymmetric vacuum refining equipment

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE593968A (en) * 1959-08-14 1960-12-01 Heraeus Gmbh W C Improvements in degassing by circulation of metals, in particular steel
DE1222090B (en) * 1960-09-09 1966-08-04 Heraeus Gmbh W C Process for degassing molten steel
US3320053A (en) * 1964-09-25 1967-05-16 Bethlehem Steel Corp Method of injecting gases into steel melts
JPS6021207B2 (en) * 1981-05-26 1985-05-25 川崎製鉄株式会社 Manufacturing method of ultra-low carbon molten steel
JPS57200514A (en) * 1981-06-03 1982-12-08 Nippon Kokan Kk <Nkk> Method for degassing molten steel
JPS5837112A (en) * 1981-08-29 1983-03-04 Kawasaki Steel Corp Vacuum refining method of molten steel
JPS60184619A (en) * 1984-02-29 1985-09-20 Sumitomo Metal Ind Ltd Production of low-nitrogen steel
AU601602B2 (en) * 1987-06-29 1990-09-13 Kawasaki Steel Corporation Method and apparatus for degassing molten metal utilizing RH method
AU605949B2 (en) * 1987-12-25 1991-01-24 Nkk Corporation Method for cleaning molten metal and apparatus therefor

Also Published As

Publication number Publication date
CA1338397C (en) 1996-06-18
JPH01188619A (en) 1989-07-27
JPH02211974A (en) 1990-08-23
AU601893B2 (en) 1990-09-20
EP0325242A2 (en) 1989-07-26
KR890012009A (en) 1989-08-23
AU2848289A (en) 1989-08-10
EP0325242A3 (en) 1990-02-14
KR930005067B1 (en) 1993-06-15

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Legal Events

Date Code Title Description
FB19 Grant procedure suspended (art. 19)
FF Decision: intention to grant
FG9A Patent or certificate of addition granted
B21A Expiry acc. art. 78, item i of ipl- expiry of the term of protection

Free format text: PATENTE EXTINTA EM 29/06/2009