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1. (WO1997018337) METHOD FOR PRODUCING PRE-TREATED MOLTEN METAL CASTINGS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/018337 International Application No.: PCT/SE1996/001446
Publication Date: 22.05.1997 International Filing Date: 11.11.1996
Chapter 2 Demand Filed: 21.05.1997
IPC:
C21C 5/52 (2006.01) ,F27B 14/06 (2006.01) ,F27D 3/00 (2006.01) ,F27D 3/14 (2006.01)
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
C
PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
5
Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel
52
Manufacture of steel in electric furnaces
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
27
FURNACES; KILNS; OVENS; RETORTS
B
FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
14
Crucible or pot furnaces; Tank furnaces
06
heated electrically, e.g. induction crucible furnaces, with or without any other source of heat
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
27
FURNACES; KILNS; OVENS; RETORTS
D
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
3
Charging; Discharging; Manipulation of charge
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
27
FURNACES; KILNS; OVENS; RETORTS
D
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
3
Charging; Discharging; Manipulation of charge
14
Charging or discharging liquid or molten material
Applicants:
SINTERCAST AB [SE/SE]; P.O. Box 10203 S-100 55 Stockholm, SE (AllExceptUS)
ANDERSSON, Conny [SE/SE]; SE (UsOnly)
WALKER, Mike [CA/CA]; CA (UsOnly)
Inventors:
ANDERSSON, Conny; SE
WALKER, Mike; CA
Agent:
BERG, S., A. ; H. Albihns Patentbyrå AB P.O. Box 3137 S-103 62 Stockholm, SE
Priority Data:
9504096-016.11.1995SE
Title (EN) METHOD FOR PRODUCING PRE-TREATED MOLTEN METAL CASTINGS
(FR) PROCEDE DE PRODUCTION DE COULEES DE METAL EN FUSION PRETRAITE
Abstract:
(EN) A method for producing metal castings comprising the steps of: i) providing a conditioning furnace, having an inlet channel and an outlet channel, with pre-treated molten metal; and ii) reducing the height of molten metal in the outlet channel to a level (h1) lower than the level of the molten metal in the conditioning furnace (h0) such that the molten metal in the spout and in the outlet channel, at least partly, is brought back into the furnace body where it can be recharged with a nucleating and/or structure modifying agent, iii) adding further nucleating and/or structure modifying agent to the molten metal when necessary, iv) mixing the melt in the furnace when necessary and v) after the stoppage, casting the melt with the desired content of structure modifying agent.
(FR) L'invention porte sur un procédé de production de coulées de métal comportant les étapes suivantes: i) approvisionner un four de conditionnement pourvu de chenaux d'admission et d'évacuation en métal fondu prétraité et ii) ramener, dans le chenal d'évacuation, la hauteur de métal fondu à un niveau (h1) inférieur à celui du métal fondu se trouvant dans le four de conditionnement (h0) de telle sorte que le métal fondu situé dans la goulotte de coulée et le chenal d'évacuation soit, du moins en partie, ramené dans le corps du four où on peut le recharger en agent de nucléation et/ou de modification de structure, iii) ajouter encore un agent de nucléation et/ou de modification de structure à ce métal fondu, si nécessaire, iv) mélanger le bain de fusion dans le four si besoin est et v) après la mise au repos, couler le bain de fusion contenant la teneur voulue d'agent de modification de structure.
Designated States: AU, BR, CA, CN, CZ, HU, JP, KR, MX, PL, RU, US, VN
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
CZPV1998-1484EP0861336RU02173235US6079476JP2000500072 DE000069603287
KR1019990067659AU1996076591