The castings produced by investment casting have high dimensional accuracy and small surface roughness. They can be used to produce castings with complex shapes and precision that are difficult to produce by other methods. At the same time, they are not limited by alloy materials. Carbon steel, alloy steel, stainless steel,high-temperature alloy, etc. can use this method to produce castings, and both large and small batches are applicable.

The composite process we adopt combines high-quality silica sol and water glass. Compared with the water glass shell, the surface quality of the casting has been greatly improved, and the surface roughness is reduced. The product defect is reduced, and the repair rate is reduced, which is more guaranteed for castings with complicated shapes and high dimensional accuracy requirements. Compared with the silica sol process, it has the advantages of a short production cycle, low cost, and convenient sand cleaning.