涡壳体是某大型运载火箭的重要部件。由于其形状复杂,壁厚差较大,铸造凝固过程易出现疏松缩孔等缺陷,铸造难度较大。设计采用了可溶性型芯形成涡形流道型腔的方案以及冷蜡块二次成形技术,制备出了涡壳体整体蜡模;采用硅溶胶陶瓷型壳,设计合理的浇注系统,确定合理的浇注工艺参数,成功浇注出了符合技术要求的涡壳体铸件。 The volute shell is an important part of a large launch vehicle. Due to its complex shape, large wall thickness difference, the casting solidification process is prone to defects such as shrinkage and shrinkage, casting is more difficult. The scheme of forming the vortex channel cavity by the soluble core and the secondary molding technology of the cold wax block were designed and the whole wax mold of the volute shell was prepared. The silica sol ceramic shell was used to design a reasonable pouring system to determine the reasonable Casting process parameters, the successful casting of the volute shell castings meet the technical requirements.