钢化玻璃是将平板玻璃加热接近软化点时，在玻璃表面急速冷却，使压缩应力分布在玻璃表面，而引张应力则在中心层。因有强大的压缩应力，使外压所产生的引张应力，被玻璃的强大压缩应力所抵消，增加玻璃使用的安全度。

Tempered glass is made by heating flat glass close to its softening point and then rapidly

cooling the surface, causing compressive stress to be distributed on the glass surface,   while   tensile   stress   is in   the   center   layer.   Due   to   the   strong   compressive   stress,   the tensile stress generated by external pressure is offset by the strong compressive stress of the glass, increasing the safety of glass usage.