This silica sol has core competitive advantages including environmental friendliness, high bonding strength, fast low-temperature curing, and minimal harmful residue. It solves the pain points of traditional bonding agents such as insufficient bonding strength, high environmental pollution, and easy generation of casting pores. The adjustable particle size can meet the bonding needs of different types of castings, significantly reducing the rejection rate of castings and improving overall production efficiency. It also has good thermal stability, which will not decompose at high temperatures and will not affect the metallographic structure of castings.
Key technical parameters include SiO2 content of 30±0.5 wt%, particle size ranging from 10 to 20 nm, viscosity of 5-15 mPa·s, pH value between 9.0 and 10.5, density of 1.21-1.23 g/cm³, shelf life of 12 months, and appearance as milky white transparent liquid. The bonding strength reaches more than 1.8 MPa, the freezing point is lower than -5℃, and the heavy metal content complies with ASTM E1600 standard, ensuring that it meets the environmental protection and quality requirements of foundry production. It is a water-based product with no organic solvent addition, conforming to modern green production standards.
This product is widely used in investment precision casting, sand casting and lost wax casting processes, suitable for the production of automotive parts, aerospace precision castings, hardware tools and other metal castings. It is mainly provided to foundry factories, automotive part manufacturers, aerospace component processing enterprises and other related industries, helping them improve product quality and production efficiency while reducing environmental protection compliance costs. It can also be used for the production of large-scale structural castings and small precision parts.
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