For making complex-shaped components that require tighter tolerances, thinner walls and better surface finish, investment casting is the method that is used. The way by which the mould is made is a distinguishing feature of investment casting by zinc investment casting manufacturer. A pattern of the part is made using wax, which into fine ceramic slurry is then dipped that contains colloidal alumina and silica.
To melt the wax out, inside an oven the mould is dried and heated leaving behind a ceramic shell mould. For precision casting of aerospace components, the investment casting method also known as lost wax process is used.
For metals investment casting, one of the most widely used techniques of rapid prototyping, and towards manufacturing application, it is the one most rapidly moving. Using rapid prototyping processes rather than molded wax patterns are produced.
Zinc investment casting china, as well as die casting produces parts of similar geometric shapes and size. Since, the disposable pattern is produced by injecting wax into a mould, difficult features or costly to die cast or injection mold are also expensive to investment cast.
For complex shaped or finely detailed castings the investment casting or lost wax process is a manufacturing technique. Through net shape manufacture, investment casting works to eliminate costly and time-consuming machining operations and reduces product mass through better design. However the ongoing cost benefit vs machined from billet products is one of the main considerations of many investment cast products.
When low production volumes are expected then only zinc investment casting is used, whereas when high production volumes are expected die casting tends to be used.
By wide range of metal alloys investment cast parts can be made including stainless steels, aluminum and copper alloys, tool steels, nickel carbon and low alloy steels and cobalt alloys. Die castings, must be restricted to metals with relatively low melting temperatures—primarily zinc and aluminum.
In investment casting, by either machining or casting a metal die or mold is made. The more complicated the shape, the more costly the metal dies.
