目前铝硅合金一般用Na块作变质剂，但是这种变质剂除了有变质、除气和精炼作用之外，钠很容易氧化，导致变质效果下降。为了提高力学性能必须寻求一种效果较好的复合变质剂。采用Zl102铝硅合金炉料，在电阻石墨粘土坩埚炉中熔化。将予先经烘烤的熔剂均匀覆盖在750oC的铝液面上 At present, Al-Si alloy is generally made of Na block as a modifier, but in addition to deterioration and degassing and refining, this modifier is easily oxidized, resulting in the deterioration of metamorphism. In order to improve the mechanical properties must seek a better composite modifier. Using Zl102 Al-Si alloy charge, melting in a resistive graphite clay crucible furnace. The pre-baked flux evenly covers the aluminum surface at 750oC