Manufacturing method of surface pulling stress glass

Abstract

The invention discloses a manufacturing method of surface pulling stress glass. The manufacturing method specifically comprises the following steps: irradiating the region to be treated of the glass by use of heating laser so that the glass of the surface layer can be heated to a softening temperature, and stopping irradiating when the glass of the surface layer is heated and softened but the glass of the inner layer is not softened; reducing the temperature of the glass of the surface layer to the temperature of a solidifying point so that the glass of the surface layer can be changed into a non-softened state from a softened state and shrinks; further reducing the temperature of the glass of the surface layer to be below the temperature of the solidifying point so that a temperature balance can be achieved between the glass of the surface layer and the glass of the inner layer, and then forming pulling stress on the glass of the surface layer and pressure stress on the glass of the inner layer. According to the method, the glass of the surface layer having the pulling stress can be formed, so that the glass of the surface layer can be non-wettable and hydrophobic for liquid substances; the processed glass can be widely applied to the environments needing to resist moisture and also to the microstructure defect elimination processing or other processing of the glass.

Description

technical field [0001] The invention relates to the field of laser processing, in particular to the field of manufacturing and processing surface tensile stress glass. Background technique [0002] A drop of water placed on a clean glass plate will adhere to the glass plate to form a thin layer; when a clean glass piece is immersed in water and then taken out, the surface of the glass will be covered with a layer of water. This phenomenon is called wetting, and for glass, water is the wetting liquid. A drop of mercury placed on a clean glass plate can roll around on the glass plate without adhering to it; if a piece of clean glass is dipped into mercury and then taken out, mercury will not adhere to the glass. This phenomenon is called non-wetting, and mercury is a non-wetting liquid for glass. Liquids have different degrees of wetting to solids. For example, a drop of water will infiltrate and spread out on a clean glass surface, while a drop of water will remain in the s...

AI Technical Summary

Problems solved by technology

[0003] In many application places, such as building windows, automobile glass windows, outdoor shed windows, etc., if fog or water vapor is encountered, the fog or water vapor will infiltrate and spread on the windows, affecting the visibility of the windows, such as the window of automobile glass windows. Visibility can cause traffic accidents

[0004] In addition, some glass may have mechanical microstructure defects, which affect the normal use function and the beauty of the glass or the strength of the glass

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