| 摘要 |
PURPOSE:To prevent the deformation and burn of belts as a result of nonuniform cooling by holding a dummy bar head which is made bulgeable by the springs interposed therein in a casting space and lowering a solidified ingot and the dummy bar head. CONSTITUTION:The dummy bar head 7a constituted of a pair of outside wall parts made bulgeable by the springs interposed therein is sent into the casting space 4 from above or below by driving the metallic belts and is held into the casting space 4 then a molten metal is poured into said space in the stage of starting casting. Either of the spring force of the static pressure of molten steel is exerted to the belts 1, 2 by the head 7a and the space 4 into which the molten steel is poured. As a result, the discharge rates of the cooling fluid from the upper nozzle holes and lower nozzle holes of cooling pads 5, 6 are made uniform and the thickness of the fluid film in the casting direction is made uniform as well. The supply of the substantial cooling water to the part into which the molten steel is poured is thus made possible and the burn, etc. of the belts are prevented. |
