How to prevent glass bursting

How to prevent glass bursting

When we use glass, we will encounter the situation of glass bursting from time to time, and we do not know the reason of the bursting. Today, we interviewed a technician in a glass factory. According to him, the reason for the glass bursting is that the glass is a poor conductor of heat. When the glass is placed outdoors in the cold, the outer wall will shrink rapidly, while the inner wall of the cup has not shrunk sharply, resulting in the cup being heated unevenly and bursting.

Use glass in winter, the only thing to pay attention to is that the glass is most afraid of thermal expansion and contraction, the temperature of the glass is too low (such as just taken out from the refrigerator, just taken in from the cold outside, do not immediately fill the hot water, in case of bursting. Just now, when I was pouring water, the glass burst, causing boiling water to spill over my body. It was really bad luck.

This is related to the manufacturing process of the glass, the general daily glass products must go through annealing and tempering process, annealing is to eliminate the internal stress in the process of glass forming, tempering is to make the glass broken into small particles, to avoid wounding. Without annealing, the stress in the glass is not effectively eliminated, very easy to burst, sometimes do not need external force, they will burst.

Therefore, we tell you again, when using the glass in winter, more or less pour into a little warm water, so that the glass is heated evenly, and then pour in boiling water. To prevent the glass from bursting, therefore, people need to pay attention.