以高铝粉为耐火骨料,以海泡石和CMC作为悬浮剂,研究了一种适用球墨铸铁铸件的水基消失模涂料,分析了各原料加入量对涂料性能的影响。结果显示:增加海泡石的量能提升涂料悬浮性和涂层强度;磷酸二氢铝能提高涂层强度,但会降低涂料透气性;珍珠岩能提高涂料透气性。当海泡石的量为10%,磷酸二氢铝为4%,珍珠岩为12%时,各原料能有最佳的交互作用。 Taking high aluminum powder as refractory aggregate, sepiolite and CMC as suspending agent, a kind of water-based lost foam coating for ductile iron castings was studied. The influence of each raw material adding amount on the properties of coating was analyzed. The results show that increasing the amount of sepiolite increases the suspension and coating strength of the coating. Aluminum dihydrogen phosphate can improve the coating strength but reduce the permeability of the coating. Perlite can improve the permeability of the coating. When the amount of sepiolite is 10%, aluminum dihydrogen phosphate is 4%, perlite is 12%, the best interaction between the raw materials.