The biggest advantage of investment casting is that it has a high dimensional precision and surface finish, so the machining work can be reduced, we only need to leave a little machining margin in the parts where needs higher requirements, and even some castings only need to leave polishing margin without mechanical processing. Thus it can be seen that the investment casting can save a lot of machine tool equipment and processing hours, and can save more metal raw materials.
Another advantage of investment casting is that it can cast some complex castings with various alloys, especially high-temperature alloy castings. For example, the streamlined outer profile and cooling chamber of the blades of a jet engine can hardly be formed by the machining process. Using investment casing technology not only achieve the mass production, but also can ensure the consistency of castings and avoids the stress concentration of residual cutting grain after machining.