| 摘要 |
PURPOSE:To smoothly and safely stop casting operation by charging coolant into molten metal basin, lowering the temp. of the molten metal to increase the viscosity and stopping the casting of a rapid cooled metal strip. CONSTITUTION:Injection of the molten metal is executed while keeping gap between a pouring nozzle 3 and a roll 6 for cooling to the prescribed interval, and the coolant of steel ingot, etc., is charged into the molten metal basin 7 of the pouring nozzle 3 through a coolant charging pipe 8. As the temp. of the molten metal is lowered and the viscosity is rapidly increased, the injection from an outlet slit 5 is rapidly decrease. and the flow-out of the molten metal is stopped at comparatively early time. By this method, splash and scaly flake developing in the case the molten metal head height in the pouring nozzle 3 lowers, can be restrained to the min. and contamination of the machinery apparatus and damage in working circumference can be prevented. |
