后掠式压气机叶轮形状复杂,特别是叶片翘曲角大于20度时,给叶轮的制造工艺增添了许多不便。用失蜡铸造方法制造,阴模压进蜡后,模块被蜡质叶轮叶片勾住,很难取出。为了克服这一困难,采用了柔性模,即以硅橡胶模代替蜡模,以石膏模代替硅酸乙酯涂料制的壳型的工艺。柔性模最大优点是不必耽心模块被叶片勾住,拆模时,勾住的叶片部位在外力作用下随着力的方向产生变形,当型块取出后,它能恢复到原状。另外,做出的硅橡胶叶轮,可以重复使用数次。但是柔性模制造叶轮的工艺方法,与失蜡精密铸造制 The shape of the swept-back compressor impeller is complicated, especially when the blade warpage angle is greater than 20 degrees, which adds a lot of inconvenience to the manufacturing process of the impeller. Lost wax casting method of manufacturing, wax into the wax after the mold, the module is hooked wax leaves, it is difficult to remove. In order to overcome this difficulty, a flexible mold was adopted, that is, a silicone mold instead of a wax mold and a plaster mold instead of a shell-type process made of ethyl silicate paint. The biggest advantage of the flexible mold is that you do not have to worry about the module being hooked by the blade. When removing the mold, the hooked blade part will deform in the direction of the force under the external force. When the mold is removed, it can be restored to its original shape. In addition, made of silicone rubber impeller, can be reused several times. However, flexible mold manufacturing impeller process, and lost wax precision casting system