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2020-07-27 14:01

What is the speed of the silica sol precision casting proces

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In the production process of silica sol precision casting, the pouring speed is very low, which can ensure the smooth filling of the molten metal to a certain extent and prevent the entry of gas. The gas and liquid metal in the mold cavity can be effectively and smoothly discharged. The shell needs to be fully baked, and the operation process needs a sufficiently high temperature.

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        Silica sol precision casting can set up a pouring system reasonably, which can effectively prevent the entrainment of pouring air to a certain extent, which is beneficial to the discharge of air in the cavity. During the manufacturing process, the pouring temperature can be appropriately increased, and the distance between the ladle nozzle and the pouring cup should be as small as possible. In the dewaxing process of silica sol precision casting, the mold material should be cleaned as much as possible to reduce the residual mold material in the equipment. During the entire casting process, attention must be paid to the thickness of the lining according to regulations to ensure uniformity, which will reduce efficiency, and the lining is too thin, which is prone to accidents.


        Silica sol has been widely used in daily precision casting. Friends who need silica sol can contact us.


        If the foundry industry does not understand the terms of precision casting and water glass, silica sol casting and coated sand, then it is necessary to understand not only the method, but also the process and materials in the casting process.


The wax of water glass is very soft, while the wax of silica sol is very hard. The surface of silica sol is better than that of water glass.


        The two differ only in the quality of molded products. Silica sol molded products are more suitable for precision casting. The finished product has good surface finish, small deformation, small shrinkage, accurate size and no secondary processing.


However, silica sol is basically made of small products, and the loss of water glass is relatively large. The two differ only in the quality of molded products. Silica sol molded products are more suitable for precision casting. The finished product has good surface finish, small deformation, small shrinkage, accurate size and no secondary processing. The wax of water glass is very soft, while the wax of silica sol is very hard. The surface of silica sol is better than that of water glass. The principle is the same. The wax, surface sand and adhesive used in the two are different.


Therefore, in order to distinguish between precision casting and high-precision silica sol casting, it is necessary to analyze the materials. It cannot be judged by casting alone.


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