B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
B22D 11/04 (2006.01) B22D 11/041 (2006.01) B22D 11/22 (2006.01)
Patent
CA 2251007
A continuous casting facility includes an ingot mould with walls (1) formed by cooled metal walls (2) on top of which is provided a feeder bush (3) of a heat insulating material. Pressurised gas injection apertures, such as a slot (10), open into the ingot mould, at least at the interface between said feeder bush and metal wall. The facility comprises means (13 to 17) connected to said apertures for supplying a gas or gas mixture with a thermal expansion capacity controllable on the basis of the cast metal alloy composition and casting conditions. By controlling the thermal expansion capacity of the injected gas, the density of the heat flow extracted from the cast metal in the area where solidification starts can also be adjusted. The invention is particularly useful for the continuous casting of steel.
L'installation de coulée continue comporte une lingotière dont les parois (1) sont formées par des parois métalliques refroidies (2) surmontées par une rehausse (3) en matériau thermiquement isolant. Des orifices d'injection d'un gaz sous pression, tels qu'une fente (10), débouchent dans la lingotière au moins à l'interface entre la rehausse et la paroi métallique. L'installation comprend des moyens (13 à 17), reliés auxdits orifices, de fourniture d'un gaz ou mélange gazeux ayant une capacité d'expansion thermique ajustable en fonction de la composition de l'alliage métallique coulé et des conditions de coulée. Le réglage de la capacité d'expansion thermique du gaz injecté permet d'ajuster la densité du flux thermique extrait du métal coulé dans la zone où il commence à se solidifier. Application notamment à la coulée continue de l'acier.
Burty Marc
Jolivet Jean-Marc
Perrin Eric
Salaris Cosimo
Spiquel Jacques
Ascometal
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Societe Anonyme Des Forges Et Acieries de Dilling
Sogepass
Sollac
LandOfFree
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