Why should the valve body of pneumatic ball valve be cast with silica sol

The better casting technology of pneumatic ball valve is silica sol casting, also known as investment casting. Silica sol casting is a kind of casting technology with less cutting or no cutting. It is an excellent technology in casting industry. It is suitable for casting of various types and alloy materials. The dimensional accuracy and surface quality of the castings produced are higher than those of other casting methods.

One of the advantages of silica sol casting is that it can cast castings with complex structure. The complex, high temperature resistant and difficult to process castings which are difficult to be cast by other casting methods can be cast with silica sol. Precision casting mold is used to press wax parts. The hardness of the mold itself is not high. The material of the mold can be selected according to the precision and complexity of the casting.

If it is a complex shape, high precision requirements and large product size, it can be considered to use cast aluminum. Compared with steel mold, aluminum mold has the advantages of light quality and low requirements for processing mold. Of course, the cost of materials is slightly higher.