The manufacture of investment mold

Investment Casting, also known as lost wax casting, including pressure wax, repair wax, group trees, James pulp, melting wax, casting liquid metal and post-processing processes. Lost wax casting is to use wax to cast the wax mold to be part, and then wax coated with mud, which is mud mold. Dry mud mold, and then baking into a ceramic mold. Once roasted, all the melting wax mold loss, leaving only pottery. General system of mud mold left on the pouring mouth, and then poured into the molten metal from the pouring port, cooling, the required parts made of. , & Lt;
Most of the pressure in the production of paste-like material into the pressure-type method of manufacturing investment. Before pressing the mold, the pressure-type surface should be coated with a thin layering agent to remove the mold from the die. Pressing wax-based material, the sub-type agent can be oil, turpentine, etc.; press the resin-based material, the commonly used sesame oil and alcohol mixture or silicone oil as the type of agent. The thinner the better, so that the model can better copy the pressure of the surface, improve the surface smoothness of the investment. There are three methods to suppress the investment, plunger pressure method, air pressure and piston pressure method.