The Quality Of Tempered Glass

Tempered glass is obtained by cutting ordinary annealed glass into the required size, heating it to a near softening point, and then rapidly and uniformly cooling it. After tempering, uniform compressive stress is formed on the surface of the glass, while tensile stress is formed inside, greatly improving the performance of the glass. The tensile strength is more than three times that of the latter, and the impact resistance is more than five times that of the latter.
It is precisely this characteristic that stress characteristics have become an important indicator for distinguishing between true and false tempered glass. Tempered glass can see colored stripes at the edges of the glass through a polarizing light sheet, and black and white spots can be seen on the surface layer of the glass. Polarizing lenses can be found in camera lenses or glasses. When observing, pay attention to adjusting the light source for easier observation.