Investment casting is also known as the lost wax casting. It usually applies several layers of refractory materials on the surface of the wax coat. After being hardened and dried, the wax will be melted to make the Fork toe, and then baked and cast to obtain the investment casting parts. Because the casting parts have high dimension accuracy and the surface finish, the investment casting is also called the precision investment casting.
 
In recent years, foreign investment casting technology has obtained great development. The rapid development of the investment casting technology is inseparable from the numerous advantages. Main advantages are as followings. Firstly, the investment casting parts have high dimension precision and small surface roughness. Secondly, it can cast thin wall castings and small weight castings. Thirdly, investment casting technology can cast fine patterns, words and the castings with grooves and curved pore. Fourthly, it can produce complex shape castings and various alloy castings. And the precision investment casting can reduce the cutting to reduce the consumption of material. Fifthly, the castings use the pattern shell of high strength and smooth surface as the pattern cavity to contact with the liquid metal directly. Therefore, it is not easy to generate the falling sand phenomenon. So it is easy to guarantee the internal quality of the casting. Finally, the die has low cost and long service life.
 
However, things always can be divided into two sides. The precision investment casting has some shortcomings. Firstly, the casting process of the precision investment casting is complex. Secondly, the production cycle is long. Finally, the casting cooling speed is slow. This is easy to cause the crassitude of the casting grains. The shortcomings of the investment casting parts are improving continuously with the development of the technology.
 
With the development of technology, the precision investment casting can produce not only the small castings, but also the large castings. At the same time, the investment casting is more precise. The roughness of the investment casting surface is smaller and smaller. "Precision, large, thin-walled” are the distinctive characteristics of the modern investment casting.
 
Forging parts supplier has considerable prospects, investment casting applications become more and more extensive. It has got the recognition of many industrial industries. Investment casting has a new breakthrough in the in the production of low cost and quick production. The application of the casting becomes larger, so compared with the other processes, it stays in a more advantageous position, and it has brought prospects and considerable profit.