Investment casting is a casting process with minimal or no machining, formerly known as the lost-wax method. Since castings produced by investment casting are superior in dimensional accuracy and surface quality to those produced by other casting methods, and investment casting can complete the production of some highly complex, difficult-to-machine castings, it is highly favored by enterprises. Regarding the investment casting process, throughout the entire process, investment casting process design is one of the critical links. This link has a high technical difficulty coefficient and is of great significance to the entire investment casting process, which is why it is typically handled by highly professional and technical personnel. Like other casting process designs, the design tasks for investment casting are: a. Analyze the processability of the casting structure based on specific requirements; b. Plan a reasonable process scheme, determine relevant casting process parameters, and draw the casting diagram on this basis; c. Design the gating and feeding system and determine the module structure. It should be noted that when considering the above three aspects, the main basis remains the fundamental principles of the general casting process. In determining process schemes and parameters (such as fillet radii, machining allowances, process ribs, etc.), except for slight differences in specific data due to the process characteristics of investment casting, the design principles are exactly the same as for sand casting. Since the investment casting process design link is of great significance to the entire casting process and requires very high personal qualities of the designers, enterprises should give considerable attention to this link.