SECONDARY COOLING METHOD OF MULTIPLE CONTINUOUS CASTING BILLETS

PURPOSE:To prevent bending and cambering of billets and to improve productivity by casting the multiple billets with a continuous casting machine which casts single or plural billets while cooling the billets in the vertical and transvers directions with two cooling systems thereby maintaining the cooling balance in the transverse direction of each billet. CONSTITUTION:The top and bottom surfaces of respective billets 7 and the opposed surfaces 5, 5 of the adjacent billets are cooled by using two cooling systems; the 1st cooling systems 1A, 1B which enclose the region where the billets or billet arrays pass. The outside side faces 6, 6 of the outermost billet 7 of the billet array are cooled by using the 2nd cooling systems 2A, 2B. The billets are cast while the cooling balance between the surfaces 6, 6 and the surfaces 5, 5 is maintained.