Tempered glass and ordinary glass raw materials the same, but the manufacturing method is different, why first heating in rapid cooling, the difference is so great?
Ordinary glass float line cooling is a long process, the glass also has compressive stress, but the compressive stress is small, uneven distribution
The cooling process of tempered glass is the glass internal pressure generated quickly and uniformly high stress and uniform DB toughened glass broken small particles (tempered glass inner stress is greater than or equal to 90 kg / cm2)
When the glass is heated to a suitable temperature, it cools rapidly, causing a sharp contraction of the glass surface and a compressive stress, while the cooling in the middle of the glass is slower and it is too late to shrink, thus forming a tensile stress and making the glass obtain a higher strength. Generally speaking, the higher the cooling intensity, the greater the strength of the glass.
