Hidden Danger Of Glass Curtain Wall-is Thermal Stress Really The Cause Of Glass Breakage?

Thermal stress is an important cause of glass curtain wall breakage. There are many reasons why the glass curtain wall is heated, but the main heat source is sunlight. When the sunlight hits the surface of the glass curtain wall, the glass will be heated and expanded. If the glass is heated evenly, the glass edges and the glass midpoint will expand uniformly at the same time. The heat of the glass and the inside of the glass is uneven, and tensile stress will be generated inside the glass. When there are cracks or micro-cracks on the edge of the glass, these defects are easily affected by thermal stress. As the temperature difference increases, the thermal stress will gradually cause cracks. The enlargement causes the glass to break.

The solution is to first perform finishing treatment on the edge of the glass, using fine grinding or polishing to reduce the existence of small cracks; secondly, the glass is tempered to enhance the ability of the glass to resist temperature changes; the third is the glass During processing, handling, and installation, the glass must be properly protected. Be careful not to collide or rub the edge of the glass with other hard objects. Strictly follow the operating procedures, especially during the installation process, if the frame is not suitable (too small or twisted) Deformation), remember not to use pliers to pinch the corners of the glass, be sure to correct the frame to adapt to the size of the glass.