How double glazing is cracked

     Today is the last day of 2019, and I wish you all a Happy New Year! I will share with you a little knowledge today, that is, how to prevent cracking of the double-layer cup. First of all, what is the reason for the glass being cracked?

     The reason for the double-layer glass to burst is that as soon as hot water is poured into the cup, the inner wall of the cup is heated and expands sharply, but the outer wall of the cup remains the same. The following introduces the anti-cracking method for everyone:

1. When boiling water, first put a metal object such as a copper fork, aluminum spoon, etc., and the cup will not burst easily.

2. Submerge the new double glass in the pot with water. Boil and remove the cup after the water has cooled, and the double-layered glass will not break due to rapid cooling and heating.

3, first pour the cold water in the cup, and then slowly boil the water to the middle of the cup, because the glass at the bottom of the cup is thicker than the wall, it is not easy to break.