对四种不同配方的天然粘土砂,分别进行了型砂的成型性试验和对HT150的浇注试验。首先,用这四种天然粘土砂分别进行了手工造型,通过工人的经验和造型结果的综合评定,找出最易成型的配方。其次,对造型良好的铸型进行浇注试验,通过分析铸件的表面质量(粘砂和粗糙度)和型砂烧结壳,得出最佳的铸造工艺,最后获得天然粘土砂铸造工艺的壁厚适应范围。 For four kinds of natural clay sand with different formulations, the formability test of molding sand and the pouring test of HT150 were carried out respectively. First of all, the four types of natural clay sand were hand-made modeling, through the workers experience and modeling results of a comprehensive assessment to identify the most easy to form the formula. Secondly, pour casting test on the well-shaped mold. By analyzing the surface quality of the castings (sticky sand and roughness) and the sintered shell of sand, the best casting process is obtained. Finally, the wall thickness of the natural clay sand casting process is obtained .