Precision casting is also called lost wax casting, its products are precise, complex, close to the final shape of parts, can not be processed or rarely processed on direct use, so melting casting is a near-net formation of advanced technology. China's ancient: prince, copper ban, copper lion and so on, are the masterpiece of meltcasting. Since the 1940s, when molten casting was used in industrial production, it has been developing at a rapid pace for half a century. Especially in Europe and the United States rapid development. Melt casting is used in the aerospace and weapons sectors and is used in almost all industrial sectors, especially in the electronics, petroleum, chemical, energy, transportation, light industry, textiles, pharmaceuticals, medical devices, pumps and valves.
In recent years, China's rapid development. The development of melt ingress technology makes the melting mold casting not only produce small castings, but also produce larger castings, the largest mold casting profile size is nearly 2m, while the minimum wall thickness is less than 2mm. At the same time, the mold castings are more precise, in addition to linear tolerances, parts can also reach higher geometric tolerances. The surface roughness of the mold castings is also getting smaller and smaller, reaching Ra0.4 m.
