Method of and molten metal feeder for continuous casting

B - Operations – Transporting – 22 – D

Patent

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Details

B22D 11/103 (2006.01) B22D 11/06 (2006.01)

Patent

CA 2596473

The invention provides a feeder for delivery of molten metal into a mold formed between confronting casting surfaces of a continuous casting machine. The feeder comprises a projecting nozzle tip having at least a lower wall provided with a molten metal-contacting inner surface, a generally flat outer surface and an end surface at an outer extremity of the tip extending between the inner and outer surface. The inner surface is generally flat and preferably slopes towards the outer surface considered in a direction moving towards the extremity of the tip at an angle of slope of no more than 8 degrees. The end surface is generally flat and extends from the inner surface to the outer surface at an acute angle of less than 88~, e.g. in the range of 15 to 80 degrees, relative to the inner surface in a direction away from the extremity of the tip. The feeder casts a metal sheet article having reduced surface defects caused by rupture of the metal oxide during casting.

L~invention concerne un dispositif d~alimentation pour transporter un métal fondu dans un moule formé entre les surfaces de coulage opposées d~une machine de coulée continue. Le dispositif d~alimentation comprend une pointe d~injecteur en saillie présentant au moins une paroi inférieure dotée d~une surface interne au contact du métal fondu, une surface externe généralement plane et une surface d~extrémité à une extrémité externe de la pointe qui s~étend entre les surfaces interne et externe. La surface interne est généralement plane et s~incline de préférence vers la surface externe considérée dans une direction se déplaçant vers l~extrémité de la pointe avec un angle d~inclinaison inférieur à 8 degrés. La surface d~extrémité est généralement plane et s~étend depuis la surface interne vers la surface externe avec un angle aigu inférieur à 88 degrés, par exemple compris entre 18 et 80 degrés, par rapport à la surface interne dans une direction s~éloignant de l~extrémité de la pointe. Le dispositif d~alimentation permet de couler un article de feuille métallique présentant moins de défauts de surface dus à la rupture de l~oxyde métallique en cours de coulage.

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