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Quartz annealing is a vital process that eliminates internal defects and stabilizes the performance of materials through controlled heating, holding and cooling. Its core functions are threefold.

The manufacturing process of quartz glass is highly distinctive and fundamentally different from that of conventional glass products. The production of quartz glass presents several significant challenges, including an extremely high melting temperature, high melt viscosity, and considerable difficulty in bubble removal. Quartz glass is composed of a single crystalline component, and cannot incorporate...

At high temperatures, the quartz tube will undergo a chemical reaction with alkali metals, resulting in the formation of crystallization. These crystalline regions exhibit increased fragility, leading to the development of cracks. Potential sources of alkali metal contamination may include the following.

Crystallization mainly appears on the surface of quartz glass, followed by internal places with defects. This is because that these places are susceptible to contamination, which causes the partial concentration of impurity ions.