Oingdao NPA Industry Co., Ltd,

All raw materials (silica sol and zircon powder) need to be dried at 450 degrees Celsius before melting to avoid hydrogen corrosion. Then, they are controlled by PLC and enter the casting process under argon protection. The entire process aims to create components with extremely high purity and high compression structure. The product does not contain impurities and is suitable for use as a first-class high-performance material.

Using a mixture of furan resin, curing agent, and quartz sand for molding, it is commonly used for casting complex large castings and static castings with a wall thickness greater than 15mm.
Zirconia powder coating sprayed on the mold cavity, high temperature resistance, good surface quality of castings, high mold strength, suitable for producing complex castings with large wall thickness; Good sand disintegration, easy cleaning, good molding, low gas generation, good thermal stability and breathability.

Using silica sol, zircon powder, medium temperature wax, and mullite sand to make shells, it is commonly used in the production of thin-walled castings such as twisted pieces and small Y-shaped pipes.
High surface smoothness, with a roughness of up to 3.2;
High shell strength, minimal casting deformation, and high dimensional accuracy.