A CASTING TECHNOLOGY TO A BUILD UP MOLD FOR CONTINUOUS CASTING OF PLATE BILLET

摘要

Disclosed herein is a build-up mold for continuous casting of plate billet, which is consisted of two broad sidewalls and two narrow sidewalls. At both sides of each of the narrow sidewalls, there is respectively provided a row of right triangle like flanges. The bevel of the triangle flange faces inward, one of right angled faces is combined with the inner face of the narrow sidewall, and another right angled face is coplanar with the side face of the narrow sidewall. The bevel of the triangle flange may be planar or a concave cambered surface. The build-up mold according to the invention has advantages of simple construction, reasonable design, by adopting four rows of right triangle flange formed on the two narrow sidewalls, it is possible to change the shape of the corners of the inner chamber of the mold and adopt rounded corner or vertical slope corner instead of right angle, such that the cooling of the molten steel at the corners during solidifying inside the mold to form billet shell is changed to approach one dimensionally cooling from two dimensionally cooling thereby achieving effect of reducing cooling strength at the corners and making the cooling of the billet shell uniform, therefore avoiding the surface defects from occurring due to the non-uniform cooling at the corners of the billet.