Company name: gansu suboka jie new material technology co., LTD
Contact person: Mr. Guo
Contact number: 13893641002
Company address: circular economy industrial park, anding economic development zone, dingxi city, gansu province
Precision casting process wax mold precision casting, also known as lost wax casting or investment casting.
In the 1940s, the ion exchange process of silicon sol was developed by the American company NALCO. Later, it was perfected by the American company dupont in the 1950s and 1960s. At present, it is the most mature and widely used process. This process has certain requirements for materials such as water glass, ion exchange resin and operation technology, which are the weakness of domestic products. Relatively speaking, the process of one-step hydrolysis of silica powder is relatively simple and is widely used in China. However, silica sol prepared by this method usually has a particle size of about 10-20 nanometers, and the interface between particles is not clear, the morphology is non-spherical and cannot be controlled, and the interface between particles is not clear, so it is usually used in casting and other industries in large quantities, but not in many fields with higher requirements such as precision polishing and catalyst. Compared with the internationally renowned silica sol brand, the main disadvantages of domestic silica sol at present are high impurity content, no strict control of particle size, no strict detection of particles than the surface, low concentration of silica, poor stability under acidic or neutral conditions, short service cycle, more or less with a little color, less variety and so on. At present the internationally renowned silica sol brand has dupont to pass reiss LUDOX series.