Method for preventing dewaxing spalling of precision casting mold shell and aero-engine

The invention discloses a method for preventing dewaxing spalling of a precision casting mold shell and an aero-engine. The method comprises the steps that S1, wax is prepared, specifically, after a wax mold is prepared, a heat-sensitive wax material is prepared and heated to be melted, and the melting point of the heat-sensitive wax is lower than that of runner wax in the wax mold; s2, waxing: pouring or coating heat-sensitive wax in a target area by taking the position of a pouring cup of the wax mold as a starting point, and then cooling and solidifying; s3, shell manufacturing is conducted, specifically, a wax mold provided with heat-sensitive wax is used for manufacturing a mold shell; and S4, dewaxing: heating the mold shell in the heating kettle to enable the heat-sensitive wax in the inner cavity of the mold shell to reach a melting point to be melted and discharged, forming a dewaxing channel between the sprue cup wax and the inner wall of the mold shell by taking the sprue cup position of the mold s