Method and device for producing slabs
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United States of America Patent
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Sep 30, 2003
Grant Date -
Aug 14, 2003
app pub date -
Dec 2, 1999
filing date -
Jun 3, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for producing slabs having a thickness D>100 mm, at casting speeds v<3 m/min, in a continuous casting installation in which melt is supplied to a permanent mold from a storage reservoir via an immersion nozzle and from which, on the aperture side, a strand shell enclosing a liquid crater is withdrawn into a strand guidance frame, in particular a bow-type continuous casting installation. The melt supplied enters the permanent mold at a speed (v.sub.K) whose relationship with respect to the strand withdrawal speed (v.sub.B) is: v.sub.K :v.sub.B =6:1 to 60:1, and the flow filaments of the melt supplied are guided in such a way that, with regard to the melt level, they penetrate into the liquid crater over a length L<2 m over a wide front and with a profile which is rectangular in cross section.
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