Hurricane-proof glass manufacturing technique

Abstract

The invention relates to a process of preparing anti-hurricane glass, comprising following steps: cutting and edging glass; heating glass in the tempering furnace to softening point; feeding the glass into cooling room at speed of 25-50 cm / s, the air pressure in cooling room should be controlled at 6.5-7.5 * 103 Pa to make the surface compressive stress reach to more than 150 MPa; putting glass into acid-etching slot for suitable acid etching; washing glass surface with clean water; coating the surface with organic silicon protecting membrane. The invention is characterized by low production cost and short producing time.

Description

technical field [0001] The invention belongs to a glass production process, in particular to a production process of hurricane-resistant glass. Background technique [0002] In recent years, with the deterioration of the earth's environment, human beings are more and more frequently hit by hurricanes, and more and more buildings need to use hurricane-proof glass. The production process of hurricane glass. [0003] However, in the glass manufacturing industry, people encounter many difficulties when exploring the above-mentioned processes: [0004] First, although in theory, increasing the compressive stress on the glass surface can improve the strength of the glass, but in reality, there will inevitably be some defects such as microcracks on the surface layer of any glass. On the contrary, due to the existence of huge internal stress, the glass will easily "explode" due to stress concentration at the defect or "explode" due to a slight impact from the outside, or the inter...

AI Technical Summary

Problems solved by technology

[0005] Second, although the use of chemical solution to corrode the glass surface can eliminate the defect layer on the glass surface, if the chemical solution surface corrosion process is not properly controlled, the stress on the glass surface will be greatly reduced while eliminating the defect layer on the glass surface. Especially for tempered glass obtained solely by chemical tempering, due to its thin stress layer, it is not easy or suitable to use chemical solution to eliminate the defect layer on the glass surface

[0006] Third, although the chemical tempering method can effectively increase the surface stress of the glass, if only relying on chemical tempering to increase the compressive stress on the glass surface, the production cost is high and time-consuming, and only a small amount of special glass can be produced, which is not suitable for large-scale industrialization. Mass production cannot meet the huge demand of ordinary buildings

The disadvantages of the above-mentioned hurricane-resistant glass composite components are obvious. First, the PVB film or plastic in the middle of the laminated glass will rapidly age after being used for a period of time, so that the hurricane-resistant performance of the glass assembly will decline rapidly; secondly, although the above-mentioned laminated glass assembly It can barely pass the test, but due to the low strength of the single piece of glass itself in the above components, the overall component can only pass the lower level of test standards

[0010] In other words, before the present invention was made, all hurricane-resistant glass components that passed the above test standards were laminated glass components, and no manufacturer could find a production process that could produce a single piece of hurricane-proof glass. No single pane of glass can pass the test of the above US standard