| 摘要 |
PURPOSE:To curtail an inert gas by dividing the inside of a tandish by a molten metal receiving part and a molten metal pouring part by a weir plate, and sealing the molten metal pouring part by a nitrogen gas instead of the inert gas in case of a period in which a molten metal is stable. CONSTITUTION:The inside of a tandish 1 is divided into a molten metal receiving part A for receiving a molten metal 5 from a ladle 3, and a molten metal pouring part B by a weir plate 2 hanging down from the upper part of the tandish 1. Also, in a period in which a molten metal in the tandish is stable, the molten metal receiving part A and the molten metal pouring part B are sealed with an inert gas and a nitrogen gas, respectively. Also, in a period in which the molten metal in the tandish is unstable, when the manufacturing conditions are changed, etc. such as a replacement of the ladle, a change of a casting speed, etc., both the molten metal receiving part A and the molten metal pouring part B are sealed with an inert gas. |
