CONTINUOUS CASTING DEVICE FOR SEMI-SOLIDIFIED METAL

摘要

PROBLEM TO BE SOLVED: To continuously cast a semi-solidified metal of high solid face ratio without installing a screw groove in a cooling.agitation basin by connecting a core having a screw groove on its outer face with a driving means; arranging an electromagnetic conducting coil at an outer periphery of the cooling.agitation basin constituted with a cooling cylinder and a water cooling jacket; directly connecting a continuous casting die with the cooling.agitation basin via an injection nozzle and pulling out a billet with a pinch roll. SOLUTION: A molten metal (molten metal) 1a is continuously injected into an upper part of a cooling.agitation basin via a tundish 1. The molten metal 1a is revolvingly agitated with a revolving magnetic field being generated by an electromagnetic induction coil 4, cooled with an inner wall face of a cooling cylinder 2 and becomes a semi-solidified metal 1b. A core 5 is rotated by a driving means (a driving motor) 12 so as to accelerate the semi-solidified metal 1b flowing. Then, a large downward thrust is worked to the semi-solidified metal 1b and the semi-solidified metal 1b is injected into a continuous casting die 7, even when it is a high solid face ratio. A rotation speed of the driving means (the driving motor) 12 is adjusted in accordance to the solid face ratio of the semi-solidified metal 1b.