Preparation and strengthening method of transparent cover plate glass

The invention discloses a preparation strengthening method of transparent cover plate glass, which comprises the following steps: mixing SiO2, Al2O3, P2O5, ZrO2, ZnO and other substances, melting, forming and annealing to obtain precursor glass, then carrying out three-stage heat treatment, including two-stage heating treatment and one-stage rapid cooling treatment, and finally polishing to obtain the transparent cover plate glass. Wherein the second-stage heating treatment needs to be carried out in an SO2 atmosphere. In addition, the method also comprises the following steps: performing low-temperature ion exchange treatment by using NaNO3/KNO3 molten salt, and quickly cooling in an SO2 atmosphere after treatment, thereby finishing surface strengthening of the transparent cover plate glass. Through three-section heat treatment and neutralization and/or enhanced cooling in the SO2 atmosphere, the surface strength is enhanced, and the cleaning difficulty of residues is reduced. 本发明公开了一种透明盖板玻璃的制备强化方法，将SiO2、Al2