Why are the glasses easy to break in the summer ?

Generally blew glass curtain wall will be broken in the summer. Tempered glass curtain wall glass, glass is a so-called ordinary glass at high temperature rapid cooling (quenching) of the product obtained, the strength much higher than ordinary glass, but in the process of quenching the glass has accumulated stress exceeds the strength of the event of there are sharp edges as the impact of various shapes, will be broken into small pieces, rather than ordinary glass broken back, so relatively safe.

Tempered glass is difficult to achieve because of its completely uniform stress distribution, so in the course of repeated thermal expansion and contraction, uneven stress continue to accumulate, which blew a certain rate, a good few thousandths of one percent of the poor two. Laid down in the summer when the building walls, we should pay attention to the glass rain.

Only in the course of ordinary glass in the rapid heating will be broken, because the glass is a poor conductor of heat, in a rapid heating process, Lengrebujun each part causes thermal expansion and contraction, leading to fragmentation and is not processed through the glass, pour boiling water rush, will be broken is for this reason. Thus, ordinary glass is not broken in the summer, the sun is bigger, the heating process is relatively slow.