| 摘要 |
PURPOSE:To cast continuously a clean and smooth metallic product having less oxidation on the surface by holding molten glass and molten metal in a vessel, pulling up the molten metal via the molten glass by a nozzle and cooling forcibly the same. CONSTITUTION:The molten metal and molten glass are poured into a refractory vessel 9 and are maintained at a prescribed temp. The nozzle 7 is lowered by a nozzle holder 6 into the molten glass layer in the upper part. The nozzle 7 is closed by a dummy bar 15 and after the nozzle 7 is lowered down to the prescribed position of the glass layer, the bar 15 is gradually raised. The molten metal is then pulled up by the nozzle 7 and the cooling of the nozzle 7 inside is changed from air cooling to mist cooling. The pressure in the vessel 9 is increased by a regulating valve 3 and the nozzle position is raised, then the stationary operation is started. The product is pulled upward by a take-up roll 13. The thickness and solidififed position of the product are detected and the product having the specified thickness is obtd. by adjusting the pressure and the nozzle position. |
