Look at the glass sign
To see if it is slightly deformed
Ordinary glass is broken into large pieces with sharp corners, which can easily hurt people. After the toughened glass is broken, it is granular, with blunt edges and corners, which is not easy to hurt people.
Generally, there are eight types of commonly used flat tempered glass thickness of 4, 5, 6, 8, 10, 12, 15, 19mm; the more commonly used curved surface tempered glass thicknesses are 5, 6, 8, 10mm.
3. Tempered glass is divided into physical tempering and chemical tempering according to the process
The characteristics of tempered glass are: 4 to 5 times higher than ordinary glass; high bending strength, 5 times higher than ordinary flat glass; good thermal stability, can withstand temperature changes of 200 ℃; smooth and transparent; non-cutting, etc. When it is damaged by super impact, the fragments are in the form of scattered fine particles without sharp edges and corners, so it is also called safety glass. The tempered glass will be slightly thinner after tempering. The reason for the thinning is that after the glass is melted and softened, it is rapidly cooled by strong wind, so that the crystal gap inside the glass becomes smaller and the pressure becomes larger, so the glass is thinner after tempering than before. In general, 4-6mm glass becomes 0.2-0.8mm thinner after tempering, and 8-19mm glass becomes 0.9-1.8mm thinner after tempering. The specific degree depends on the equipment.