| 摘要 |
PURPOSE: To restrain the solidified stickiness of remaining molten metal and slag to a refractory lining layer in a molten metal pouring device, such as ladle, hopper, used to a casting operation of a high Cr iron alloy, etc., to the min. limit. CONSTITUTION: The lining refractory layer is formed with a zircon base refractory. For example, kneaded material adjusted by adding aluminum phosphorous (binder) to zircon sand frequently used to a mold material as an aggregate, is used and heated with a burner, etc., and consolidated. By this method, even in the casting operation of molten Cr-Fe alloy containing high Cr of high m.p., the development of fume of hexavalent chromium and the solidified-stickiness, etc., of the remained molten metal, etc,, after casting is restrained to the min. limit and prevented and the effect of the smooth performance of the casting operation and the improvement of cast quality, etc., is obtd. |
