What is annealing of glass products？
Annealing of glass products is to minimize or reduce residual stress and optical inhomogeneity in the product, as well as stabilize the internal structure of the glass. The internal structure of glass products that have not been annealed has not been in a stable state, such as the change of glass density after annealing. Annealing is a metal heat treatment process, which refers to slowly heating the metal to a certain temperature, holding it for a sufficient time, and then cooling it at a suitable rate. The purpose is to reduce the hardness and improve the machinability; reduce the residual stress, stabilize the size, reduce the tendency of deformation and cracks; refine the grains, adjust the structure, and eliminate the structure defects. To be precise, annealing is a heat treatment process for materials, including metallic materials and non-metallic materials. Moreover, the purpose of annealing of new materials is similar to that of traditional metal annealing.
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