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Pinggang Tempered Glass
Category: Tempered glass
Tempered glass is produced by first cutting ordinary annealed glass into the desired dimensions, then heating it to around 700°C—close to its softening point—and subsequently cooling it rapidly and uniformly. (Typically, 5–6 mm thick glass is heated at 700°C for about 240 seconds, followed by a cooling phase of roughly 150 seconds. For 8–10 mm glass, the heating process lasts approximately 500 seconds at 700°C, with a cooling period of about 300 seconds. In general, the heating and cooling times vary depending on the glass thickness.) After tempering, a uniform compressive stress forms on the glass surface, while tensile stress develops internally, significantly enhancing the glass's resistance to bending and impact. As a result, tempered glass boasts a strength that’s more than four times greater than that of ordinary annealed glass. However, once glass has been tempered, it can no longer undergo any further processing, such as cutting or grinding, nor can it sustain damage. Otherwise, disrupting the balanced compressive stress could lead to catastrophic shattering—literally "turning to dust."
Product Details
Tempered glass is produced by first cutting ordinary annealed glass into the desired dimensions, then heating it to around 700°C—close to its softening point—and subsequently cooling it rapidly and uniformly. (Typically, 5–6 mm thick glass is heated at 700°C for about 240 seconds, followed by a cooling phase of roughly 150 seconds. For 8–10 mm glass, the heating process lasts approximately 500 seconds at 700°C, with a cooling period of about 300 seconds. In general, the heating and cooling times vary depending on the glass thickness.)
After tempering, a uniform compressive stress forms on the glass surface, while tensile stress develops internally, significantly enhancing the glass's resistance to bending and impact. As a result, tempered glass boasts a strength that is more than four times greater than that of ordinary annealed glass.
However, once glass has been fully tempered, it can no longer undergo any further processing, such as cutting or grinding, nor can it sustain damage. Otherwise, disrupting the balanced compressive stress distribution could cause the glass to shatter completely into tiny fragments.
Keywords:
Tempered glass
glass
heating
around seconds
evenly
700 degrees
cooling down
stress
varying
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