B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
22/167
B22D 11/16 (2006.01) B22D 11/111 (2006.01) B22D 11/124 (2006.01)
Patent
CA 1046731
ABSTRACT OF THE DISCLOSURE There is disclosed a method of continuously casting steel strands, in particular slabs, in a continuous casting plant. The strand is withdrawn from a cooled, oscillating mold containing molten steel covered by a casting slag layer and is cooled further in a secondary cooling zone, The surface temperature of the steel strand in the secondary cooling zone, said temperature lying between 1250 and 800°C, and the softening temperature of the casting slag, said temperature lying between 1150 and 750°C, are coordinated in such a way that during the period in which the strand passes through the secondary cooling zone the entire strand surface has a temperature lying maximumly 150°C higher than the softening temperature of the casting slag, or in case the 150°-limit be exceeded, the period of excession lasts maximumly 2 minutes over the entire strand surface. By the method of the invention the danger of corrosion and thus the danger of crack formation is eliminated.
211591
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