Wax mold precision casting, also known as lost wax casting or investment casting.

        The casting method is as follows: first, make a model of the casting to be made with wax material, and weld the model to the sprue bar with the same material to make a module (when the casting is large, it can be individually grouped). Dip the surface of the module with refractory coating (a mixture of water glass or silica sol and fine sand), then sprinkle refractory sand (dipping and sanding should be repeated several times to make the sand layer thick enough). After it dries and solidifies, heat the module and remove the wax material from the sprue to form an empty shell. Roast the empty shell to make it a sturdy mold, pour the metal liquid into the gate, and after condensation, it becomes a metal casting.

        Wax casting originated in the Bronze Age in China and has a history of over two thousand years. It has been widely used in various industries, such as aerospace, petrochemicals, weapons and ships, machinery manufacturing, household appliances and instruments.

        Wax mold precision casting has many advantages: it can manufacture castings with complex shapes, and can produce thin-walled parts with small holes; Suitable for various metals and alloys; High manufacturing accuracy.

        According to the different wax materials and shell materials used, wax mold precision casting can be divided into:

        Low temperature wax - water glass (soaking alkali) process;

        Medium temperature wax - silica sol process;

        Low temperature wax composite process - commonly used molding equipment for water glass process.

        Integrated wax making and injection machine, pneumatic wax injection machine, mixing and injection integrated wax injection machine, hydraulic wax injection machine.

        Medium temperature wax - the molding equipment used in the silica sol process.