What is lost wax casting?

Lost wax method of investment casting now called lost wax casting, is a kind of less cutting or no cutting precision casting technology, is an excellent technology in investment casting industry, its application is very extensive. It is not only applicable to various types, various kinds of alloy, and also dimension accuracy and surface quality is higher than other investment casting method, and other precision casting method is difficult to cast the metal parts like complex castings, high temperature resistant, not easy to processing, can be used by lost wax casting.

Lost wax casting is developed on the basis of ancient wax models investment casting. As ancient civilizations, China is one of the early countries of using this technology.The ancient Chinese working people created this lost wax precision casting technology, used for casting  a variety of tripod and household utensils and other products with fine decorative pattern and text.It is hard to make out these designs using ordinary investment casting process,and by using the lost wax casting method.

Modern lost wax casting methods have been proved in practical application is in the 1940 s. At that time, with the development of the aviation jet engine,complex shape heat resistant alloy parts are required such as blade, impeller, nozzle,ect. Due to it is difficult to machine  and the shape of parts is complex,so that can't or difficult to use other methods, therefore, people need to find a new precision forming technology.So referring ancient lost wax casting that has been passed down ,after improvement of materials and technology, modern lost wax casting method is developed on the basis of ancient technology. Therefore, the development of the aviation industry promotes the applications of lost wax casting.Meanwhile,continuous improvement of lost wax casting also have created favorable conditions for further development of the aviation industry.

Our country started to put lost wax casting into industrial production is in the last century 50s, 60 s.Later,it was widely applicated in the application for aviation, automobile, machine tools, ships, internal combustion engines, gas turbines, telecommunications equipment, weapons, medical equipment ect, also used for manufacturing arts and crafts.