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

PROCESS FOR REFINING CAST STEEL IN A VACUUM

Info

Publication number: BR8900249A
Authority: BR; Brazil
Prior art keywords: vacuum; cast steel; refining cast; refining; steel
Prior art date: 1988-01-21

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.)

1988-01-21

Filing date

1989-01-19

Publication date

1989-09-19

1989-01-19 Application filed by Nippon Kokan Kk filed Critical Nippon Kokan Kk

1989-09-19 Publication of BR8900249A publication Critical patent/BR8900249A/en

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	Vacuum cleaning method for molten metal

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
GB2406580B (en) *	2000-06-05	2005-09-07	Sanyo Special Steel Co Ltd	High-cleanliness steel and process for producing the same
GB2410503B (en) *	2000-06-05	2005-09-07	Sanyo Special Steel Co Ltd	High-cleanliness steel and process for producing the same
WO2001094648A2 (en) *	2000-06-05	2001-12-13	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	Method for treating 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 (5)

* 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
BR8803185A (en) *	1987-06-29	1989-01-24	Kawasaki Steel Co	PROCESS AND APPLIANCE FOR DEGASIFICATION OF METAL IN MELTING
AU605949B2 (en) *	1987-12-25	1991-01-24	Nkk Corporation	Method for cleaning molten metal and apparatus therefor

1988
- 1988-01-21 JP JP63009675A patent/JPH01188619A/en active Pending
1989
- 1989-01-13 AU AU28482/89A patent/AU601893B2/en not_active Ceased
- 1989-01-19 BR BR898900249A patent/BR8900249A/en not_active IP Right Cessation
- 1989-01-19 EP EP89100866A patent/EP0325242A3/en not_active Withdrawn
- 1989-01-20 KR KR1019890000602A patent/KR930005067B1/en not_active Expired - Lifetime
- 1989-01-20 CA CA000588802A patent/CA1338397C/en not_active Expired - Fee Related
- 1989-02-13 JP JP1031105A patent/JPH02211974A/en active Pending

Also Published As

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

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Legal Events

Date	Code	Title	Description
1996-02-06	FB19	Grant procedure suspended (art. 19)
1998-12-01	FF	Decision: intention to grant
1999-06-29	FG9A	Patent or certificate of addition granted
2012-12-18	B21A	Expiry acc. art. 78, item i of ipl- expiry of the term of protection	Free format text: PATENTE EXTINTA EM 29/06/2009