As the ancient civilizations, China is using this technique, one of the early centuries BC, in ancient China’s labor created the lost wax casting technique, with various fine decorative pattern and casting of the text ZhongDing and vessels products, such as spring when zenghou yi tomb honour plate etc. Revestment precision casting is in ancient wax casting developed on the basis of. It not only applicable to all types, various alloy casting, and produce the precision and surface quality of castings than other casting method to high, even other casting method to cast the complex, high temperature resistant, not easy machining castings, all can use revestment precision casting casting. Lost wax casting method is called revestment precision casting, is a little or no cutting cutting of casting process, is one of the foundry industry outstanding technology, its application is very extensive. Required blank In the molten iron casting, curing cavity after shelling shell, can obtain precise manufacturing finished. To obtain enough thickness after dry, warm, make interior wax pattern, and melting consistent die-cavity.
In the wax models layers of liquid brush high-temperature sand.
The method with casting, the original casting wax wax models. It can get relatively accurate shape and high precision casting.Ī common approach is needed to make the blank: firstly, and then using electrodes electrode, corrosion mode formed cavity. Precision casting method is the use of non-metallic mold,and the size of its product is more accuracy than ordinary sand mold casting method.The precision casting includes investment casting,ceramic mold casting,metal casting, pressure casting,and lost foam casting.The precision casting is compared with the traditional casting a foundry method.
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