Tempered glass is make-believe with controlled cooling to bring about it still stronger than Common glass. Pour the molten glass onto a bed of molten tin so the surface of the glass is extremely smooth and flat. Cool the molten glass on top of the tin gradually from a temperature of approximately 1,100 degrees Celsius to about 600 degrees Celsius.4. Remove the solid glass from the tin bath and allow it to cool to room temperature.
Instructions
1. Inspect the development of heating and then cooling glass rapidly. The surface of the glass will gelid also quickly than the centre, which creates an initial compression on the glass's surface. Once the glass cools, the initial stress Testament longing to be blown away before the glass Testament rent.
2. Combine the ingredients for the glass. The particular size vary somewhat nevertheless a habitual instructions for glass includes 15 percent limestone, 22 percent soda and 63 percent silica sand. Heat the concoction to a temperature of about 1,200 degrees Celsius and mix them thoroughly.
3. Make sheets of ordinary glass using the float process. Glass usually has a breaking stress of approximately 6,000 pounds per square inch (psi) whereas tempered glass requires a stress of all over 24,000 psi to cleft. Tempered glass is extremely safer over it breaks into stupid pieces, which makes it exclusively commodious in automobiles. Tempered glass also has a incongruity of other applications that wish alpine power such as cookware and glass furniture.
Cut the glass into sheets of the desired size and drill any needed holes. Tempered glass is extremely brittle and can't be easily cut.
5. Heat the glass to more than 1,200 degrees Fahrenheit in a kiln and remove it from the kiln. Blast cool air from nozzles immediately onto the glass sheets to cool the glass to 300 degrees Celsius as quickly as possible.
