Production process of tempered glass

Abstract

The invention discloses a production process of tempered glass. The production process comprises the following specific steps: (1) washing and drying: washing to-be-processed glass by using water, andthen blowing the glass for drying under high-pressure air for later use; (2) preheating: putting the glass which is washed and dried in the step (1) in a tempering furnace, and performing slow heating so as to raise the temperature of the glass from room temperature to 110-145 DEG C gradually; and (3) heating: putting the glass which is pre-heated in the step (2) in an electric heating furnace, and performing heating so as to raise the temperature of the glass to 680-710 DEG C quickly for a heating period of time of 680+/-10-180+/-10 seconds, wherein the thicker the glass, the lower the heating temperature is. According to the production process of the tempered glass, different heating temperatures and times are selected according to different thicknesses of the glass, and the softening temperature of the heated glass can be met well, so that the production efficiency of the tempered glass is improved; and meanwhile different blowing times of the glass under high-pressure normal-temperature air can be selected according to different thicknesses of the glass, and the requirement of formation of stress layers on the surface of the glass of different thicknesses can be met well.

Description

technical field [0001] The invention relates to the invention of the production process of tempered glass, improves the traditional field of production process of tempered glass, and particularly relates to a production process of tempered glass. Background technique [0002] Tempered glass refers to a kind of safety glass that forms a compressive stress layer on the glass surface after ordinary flat glass is processed by heating-quenching or other methods, so as to improve the mechanical strength and thermal shock resistance of the glass. When broken, it will form granular fragments, reducing the risk of injury. The impact strength of tempered glass is 4-7 times higher than that of ordinary glass, the bending strength is 2-4 times higher than that of ordinary glass, and it can effectively prevent thermal cracking; [0003] Generally, ordinary flat glass is heated to near the softening temperature of the glass, and then cooled rapidly, so that the mechanical strength and th...

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Problems solved by technology

[0003] Generally, ordinary flat glass is heated to near the softening temperature of the glass, and then cooled rapidly, so that the mechanical strength and thermal stability of the glass are greatly improved. The existing tempered glass production methods do not consider tempered glass when heating the glass The thickness factor, the heating temperature and heating time of glass with different thicknesses are the same, the softening temperature of the glass cannot be reached well, and when the glass is cooled, the cooling blowing time of glass of different thickness is also the same, which cannot be well achieved. To meet the formation of compressive stress layers on glass surfaces with different thicknesses, we propose a production process for tempered glass

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