High-intensity tempering process of heat-resistant glass

Abstract

The invention relates to the technical field of heat-resistant glass, in particular to a high-intensity tempering process of heat-resistant glass. The process comprises the steps of heating of the heat-resistant glass, spraying cold quenching, air cooling of the heat-resistant glass, liquid cooling of the heat-resistant glass and drying of the heat-resistant glass drying. Compared with a traditional mode of quenching via a single quenching medium, a multi-layer cold quenching mode in the invention forms a temperature step, and cold quenching temperature is more uniform from high to low, so thecracking of the heat-resistant glass caused by uneven stress on the heat-resistant glass is prevented, the probability of spontaneous explosion in the toughening process of the heat-resistant glass is reduced, and the strength of the heat-resistant glass after toughening is effectively improved.

Description

technical field

[0001] The invention relates to the technical field of high-strength tempering technology for heat-resistant glass, in particular to a high-strength tempering technology for heat-resistant glass. Background technique

[0002] In order to meet the market demand, heat-resistant glass came into being. Heat-resistant glass refers to special glass that can withstand the temperature difference between cold and hot fusion. At the same time, in order to ensure the strength of heat-resistant glass, it needs to be tempered. The strength is 4-6 times that of ordinary glass, so the safety performance of tempered glass is higher, so it can be widely used. Glass tempering is obtained by cutting ordinary annealed glass into the required size, then heating it to about 700 degrees close to the softening point, and then cooling it quickly and uniformly. After tempering, uniform compressive stress is formed on the surface of the glass, while tensile stress is formed inside, wh...