目前大多用铸铁坩埚熔化铝合金,尽管在坩埚的工作表面涂有保护涂料,但使用后粘结在表面的氧化物结渣仍然难以清除干净。我们采用了以冷水烧高温坩埚的办法,由于激冷,氧化铝结渣急骤收缩,与坩埚表面脱离,这时就可毫不费力地将结渣清除干净。由 At present, most cast iron crucibles are used to melt the aluminum alloy. Although the working surface of the crucible is coated with a protective coating, the oxide slagging adhered to the surface after use is still difficult to clean. We have adopted the method of burning hot crucible with cold water. Due to the chilling, the alumina slagging shrinks sharply and separates from the surface of the crucible. At this time, the slagging can be removed effortlessly. by