1. Enhance the strength of the shell mold
The addition of silica sol can significantly increase the strength of the shell mold. In precision casting, especially thin shell casting, the strength of the shell mold is crucial. Silica sol can form a dense film layer, improve the overall strength of the shell, prevent structural damage during application, and ensure the stability and durability of the casting.
2. Improve the casting finish and dimensional accuracy
The particles of silica sol are colorless and transparent, and will not affect the original color of the covering. During the casting process, silica sol, as a coating for the mold, can form a smooth surface, thereby improving the finish and dimensional accuracy of the casting. This feature makes silica sol widely used in fields with high precision requirements such as aerospace, automobiles, and machinery.
3. Reduce costs
Compared with traditional casting materials, silica sol can reduce production costs in some aspects. Although the production cost of silica sol itself is relatively high, compared with other materials such as ethyl silicate, the application of silica sol in thin shell precision casting can reduce material waste and energy consumption, thereby reducing overall production costs. In addition, the excellent performance of silica sol reduces the scrap rate of castings, further reducing production costs.
4. Adapt to complex shape casting
Silica sol has excellent fluidity and adhesion, and can fill complex mold structures to produce complex shape castings. This feature enables silica sol to cope with various complex shape casting needs in precision casting, improving the flexibility and adaptability of casting.
5. Shorten the production cycle
The production cycle of the silica sol process is relatively short, which is suitable for small batch and multi-variety production needs. This advantage makes silica sol perform well in quickly responding to market demand and shortening delivery cycle.
In summary, the addition of silica sol to the precision casting process can significantly improve the shell strength, casting finish and dimensional accuracy, reduce costs, adapt to complex shape casting needs, and shorten the production cycle. These advantages make silica sol widely used in the field of precision casting and become one of the indispensable important technologies in modern manufacturing.