https://www.youtube.com/watch?v=f8vaP_fcpSEInvestment casting is a type of casting process in which very little or no cutting is necessary. Among the many process technologies used in the casting industry, casting process technology is one of the best and most widely used. Additionally, the technique, which is applicable to a wide range of casting types and alloys, produces castings that are more accurate in terms of dimensional accuracy and surface quality than other casting techniques. The production of complex, high-temperature resistant, and difficult-to-process castings can be accomplished through investment casting, whereas the production of castings Investment Casting are difficult to produce through other casting methods cannot be accomplished.

A model made of fusible materials (such as wax or plastic), several layers of special fire-resistant coating applied to it, drying and hardening it to form an integral mold shell, melting the model from the mold shell with steam or hot water, and then setting up the mold shell in a sand box with dry sand around it for modeling is all Investment Casting is required for the Investment Casting Parts process. Finally, place the mold in the roasting furnace for high-temperature roasting (for example, if using a high-strength mold shell, the mold shell can be directly roasted after demoulding without the need for modeling afterwards). Following the roasting process, molten metal is poured into the mold or mold shell in order to produce the casting, which is then cast.

Achieving dimensional accuracy as high as ct4-6 (CT10-13 for sand casting and CT5–7 for die casting, respectively) is common in Investment Casting Parts. There are numerous factors Investment Casting influence the dimensional accuracy of an Investment Casting Parts, including mold shrinkage, investment mold deformation, linear change in the mold shell during heating and cooling, alloy shrinkage rate, and casting deformation during solidification, all of which are complicated by the nature of the Investment Castings process. Improvements in dimensional accuracy of ordinary investment castings, which is currently high, are required in order to improve consistency in the final product. A significant improvement, however, has been observed in the dimensional consistency of castings made with medium and high temperature waxes.

It is necessary to use a pressure mold with a high cavity surface finish in order to press the investment mold, which results in an investment mold with a surface finish that is also relatively high in comparison. As an additional benefit of using an investment mold, a refractory coating prepared with a high-temperature-resistant special binder and refractory materials is applied to the investment mold cavity, resulting in an extremely smooth and consistent surface finish that comes into direct contact with the molten metal. In order to achieve this, the surface finish of investment castings is generally higher than that of ordinary castings, with an average roughness of RA 1.63.2 m being the most common.