silica sol casting
Silica sol is an important fine chemical product with different important uses, such as alkaline silica sol in precision casting, exterior wall coating and other fields. Silica Sol precision cast has a wide range of applications, and is not limited by the size, thickness and shape complexity of the castings, so the production mode is convenient.
It can use a wide range of materials, and can use a large number of scrap metals and renewable resources. Compared with the conventional forging method, it consumes less. Castings have certain dimensional accuracy, small processing allowance, saving processing time and metal materials, low cost, good comprehensive economic performance, low energy consumption and less consumables.
Silica Sol precision casting has high dimensional accuracy and surface finish, which can reduce the workload of mechanical processing. Only a small amount of processing allowance can meet the high requirements of parts. Superalloy castings can be cast, such as the blades of jet engines, streamlined contours and cooling chambers, which are difficult to form by mechanical processing technology.
Silica Sol precision castings is used in coating industry, which can make the coating firm, anti-fouling, anti-aging, fire protection and other functions. When used, the hydraulic metal can fill the cavity better, duplicate the shape of the cavity, improve the accuracy of the casting and prevent the defects of blowhole and insufficient pouring.
Silica Sol precision castings crystallizes under pressure. When it is used, the shell is effectively placed in the pressure tank for casting. When the product is finished, the pressure tank will be closed immediately, so that the casting solidifies under pressure, so as to increase the density of the casting.
Directional crystallization of silica sol investment casting, when used, some investment castings such as its magnets and turbine blades, if their crystalline structure is columnar crystals arranged in a certain direction, are cast by its thermal gravity. In the process of using, this is a kind of casting form, which is more widely used, and the shell is cast from a certain direction. After being removed from the calciner, pouring is carried out at high temperature.