为解决将黄壤土天然粘土型砂直接应用在机器造型上,有时出现成型困难、起模不完整、表面安定性差的问题。本文开展了附加物对黄壤土天然粘土砂机器造型性能影响的研究。结果表明,在黄壤土天然粘土砂中加入一定量的α淀粉,对黄壤土天然粘土砂的机器造型性能产生积极的影响。 In order to solve the problem that the natural clay sand of yellow loam soil is applied directly to the machine shape, sometimes the problems of forming difficulty, mold imperfection and poor surface stability occur sometimes. In this paper, the impact of addenda on the modeling properties of natural clay sand loess soil was studied. The results showed that the addition of a certain amount of α-starch to natural loamy yellow clay loam soil had a positive effect on the machine modeling performance of natural loess sand.