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The technology of silica sol casting enterprises mainly involves the following aspects:

1. Silica sol formula and preparation: The formula of silica sol is a key step. The appropriate silica sol composition, particle size and concentration need to be determined according to the casting requirements. Enterprises need to have the ability to independently develop and prepare silica sol, master different silica sol preparation methods, and carry out laboratory and industrial-scale production.

2. Mold design and manufacturing: Silica sol casting requires the production of corresponding molds, and the mold design must meet the shape, size and accuracy requirements of the castings. Enterprises need to have the ability to design and manufacture molds, and can use advanced technologies such as 3D printing and CNC machining to manufacture molds.

3. Casting process control: The success of silica sol casting depends on the control of the casting process. Enterprises need to master key technologies such as optimization of casting process parameters, coating methods, and mold demoulding methods to ensure casting quality and production efficiency.

4. Quality control and testing: Silica sol casting companies need to establish a complete quality management system and conduct strict quality control and testing. This includes testing the composition and performance of silica sol, and inspecting the size and surface quality of molds and castings to ensure that products meet customer requirements and industry standards.

5. Technological innovation and research and development: Silica sol casting technology is still developing, and companies need to carry out technological innovation and research and development to improve product quality, production efficiency and reduce costs. This includes research on improving silica sol formula, optimizing casting processes, and developing new mold materials.

To sum up, the silica sol casting enterprise technology involves silica sol formulation and preparation, mold design and manufacturing, casting process control, quality control and testing, technological innovation and R&D, etc. aspects. Enterprises need to have relevant technical strength and R&D capabilities to continuously improve their technical level and competitiveness.