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Difference and application of sodium silicate and silica sol investment precision casting process

Low cost water glass production process, short production cycle, poor surface quality, mainly used for carbon steel and low alloy steel castings class; good surface quality silica sol process, but a long production cycle, high costs, mainly for high alloy steel and stainless steel products
Very soft wax water glass, sol wax hard. Sol water glass surface of the product than good.
There are only two passengers on manufacturing quality difference, silica sol manufactured passenger type is more suitable for precision casting, well manufactured product surface smoothness, distortion, little shrinkage ratio, and the size precision is not required secondary processing.
But do sol are basically small products, water glass lost foam products made relatively large. There are only two passengers on manufacturing quality difference, silica sol manufactured passenger type is more suitable for precision casting, well manufactured product surface smoothness, distortion, little shrinkage ratio, and the size precision is not required secondary processing. Very soft wax water glass, sol wax hard. Sol water glass surface of the product than good. The principle is the same with both wax, sand surface, the adhesive is not the same
Quality of the products have obvious differences. Basically sol foreign technology, domestic water glass should some more. There are water glass sand is too much trouble, because the water glass casting surface will sintered

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