Casting process for enhancing strength of large shell

The invention relates to a casting process for strengthening the strength of a large shell. The casting process comprises the steps of wax mold forming, wax mold shell making preparation, wax mold shell forming, shell fixing through hemp ropes, casting forming and casting forming. The invention aims to form a total shell with ribs inside by binding through hemp ropes on the basis of a traditional casting shell and coating with slurry and a molding material, so that the strength of the original shell is improved; in the roasting process, due to the fact that the roasting linear shrinkage rates of the hemp rope and the shell molding material are similar, the phenomenon that the overall shell cracks in the molding process is avoided, and the percent of pass of cast products is increased. 本发明涉及一种强化大件型壳体强度的铸件工艺，包括蜡模成型、蜡模制壳准备、蜡模壳体成型、麻绳固定壳体、浇铸成型和铸件成型；本发明的目的在于在传统铸造壳体基础上通过麻绳捆绑，并用浆料及造型材料涂覆，形成内部带筋的总型壳，从而提高原有的壳体强度；在焙烧过程中，由于麻绳与壳体造型材料的焙烧线收缩率相近，避免总型壳在成型过程中出现开裂的现象，从而提高铸造产品的合格率。