Investment castings have the advantages of high dimensional accuracy and the ability to cast complex thin-walled parts, and play an increasingly important role in the aerospace field. With the increasing complexity and integration of the structure and size of castings in the aerospace field, higher requirements are put forward compared to investment precision manufacturing. According to actual needs, it is particularly important to develop corresponding precision casting molding raw materials and key heat treatment equipment, control and ensure the overall dimensional accuracy of large precision casting structural parts, meet design requirements, and shorten the development cycle.