PROCESS FOR DYNAMIC CONTROL OF THE EXTRACTION SPEED DURING A HEALING CYCLE AFTER GLUING, IN A CONTINUOUS CASTING PROCESS OF STEEL.

摘要

PCT No. PCT/FR92/00286 Sec. 371 Date Oct. 8, 1993 Sec. 102(e) Date Oct. 8, 1993 PCT Filed Dec. 29, 1993 PCT Pub. No. WO92/18273 PCT Pub. Date Oct. 29, 1992.On detection of an occurrence of skin sticking in the mould, the withdrawal speed is subjected to a cyclic variation which comprises a ramp from the cruising speed to a reduced, decelerated speed, a healing plateau, and an acceleration ramp from the reduced speed to the cruising speed, measures are taken to determine the ferritic potential (PF) of the steel which is being cast, to determine the gradients (d, a) of one of the two ramps as a function of this ferritic potential, and to determine the length (tr) of the healing plateau as a function of the difference between the liquidus and solidus temperatures of said steel.