| 摘要 |
PURPOSE:To improve the surface characteristic of a product and the production efficiency by disposing a sealing cover which covers an inlet side part and pouring spout for a molten metal and supplying an inert gas in a liquid state into the cover. CONSTITUTION:The sealing cover 8 is provided so as to cover the molten metal inlet side part and pouring spout 4 of a twin belt caster and a pipe to supply the inert gas in the liquid state to the inside thereof is disposed. The inert gas in the liquid state is dropped into the cover 8 from the supply pipe and the molten metal 5 is made to overflow from the spout 4 while belts 2, 2' of the twin belt caster are driven. The gas in the liquid state evaporates in the cover 8 and forms the inert gaseous atmosphere higher than the atm. pressure in the cover. The spacing between the belts 2, 2' and asbestos cloth is thereby thoroughly sealed and the oxidation of the molten metal is obviated. Since the gaseous atmosphere is gently formed, the surface characteristic of the product and the production efficiency are improved. |
