本文介绍了ＣＸ型长效无公害铝硅合金变质剂对ＺＬ１０８和ＺＬ１０４合金的变质效果。结果表明：该变质剂对铝硅合金有双重变质作用，可同时细化和改善初生硅和共晶硅形貌，且具有速效和持效作用，提高铝硅合金的力学性能和铸件的使用性能；该变质剂加入量少，变质工艺简便，处理时无烟雾、粉尘和刺激性气味，具有良好的技术经济效果。 This article describes the CX long-term pollution-free aluminum-silicon alloy modifier ZL108 and ZL104 alloy deterioration. The results show that the modifier has double metamorphism on Al-Si alloy, which can refine and improve the morphology of primary Si and eutectic Si simultaneously. It has the effect of quick effect and persistence to improve the mechanical properties of Al-Si alloy and the performance of castings ; The modifier added in small amounts, metamorphic process is simple, no smoke, dust and irritating odor, with good technical and economic results.