一、关于铸铝合金的气孔问题铸铝合金在熔化过程中,吸气率很高,用一般浇铸方法很难消除铸件中的气孔而获得优质铸件。铸铝合金发生气孔以后,组织粗松,甚至机械性能和抗蚀性都显著降低,严重影响了铸件的质量,造成大量废品。因此如何防止和减少铝铸件中的气孔,便成为提高质量 First, on the issue of stomatal cast aluminum alloy In the melting process, the high rate of gettering, with the general casting method is difficult to eliminate the pores in the casting and access to high-quality castings. Cast aluminum alloy porosity, the organization of rough, and even mechanical properties and corrosion resistance were significantly reduced, seriously affecting the quality of castings, resulting in a large amount of waste. Therefore, how to prevent and reduce the pores in the aluminum castings has become to improve the quality