Analysis of the reasons why the weld scars of tempered glass cannot be removed

Tempered glass belongs to safety glass. Tempered glass is a kind of prestressed glass. To improve the strength of the glass, chemical or physical methods are generally used to form compressive stress on the surface of the glass. When the glass is subjected to external force, the surface stress is first offset, and then the bearing capacity is improved, and the glass's wind pressure resistance, cold and heat resistance, impact resistance, etc. are enhanced. When welding on the construction site, welding slag falls on the tempered glass, forming weld scars. So can these weld scars of tempered glass be removed? There is no way to remove them.

Tempered glass is a kind of prestressed glass. To improve the strength of the glass, chemical or physical methods are generally used. If nickel sulfide crystals appear in the tensile stress zone of tempered glass, then as long as there is a change in crystal form, self-explosion will occur. Because the time of crystal form change is uncertain, the self-explosion of tempered glass at room temperature is also completely uncertain, and the detonation treatment reduces the probability of self-explosion. The resistance of tempered glass to rapid cooling and heating is 3 to 5 times higher than that of ordinary glass. It can generally withstand temperature changes of more than 250 degrees, which has a significant effect on preventing thermal cracking. It is a kind of safety glass. To ensure the safety of high-rise buildings with qualified materials.

When attachments with a temperature exceeding 300 degrees splash onto the surface of tempered glass, the tempered glass will generally not be damaged. Attachments on the surface of the glass can be removed with tools such as putty knives and paper cutters, but they will leave uneven marks. The temperature of spot welding slag generally exceeds 900 degrees and is difficult to remove. Generally, in this case, the glass can only be replaced. After strict homogenization treatment, the probability of tempered glass self-explosion will be greatly reduced. The probability of one piece of glass self-exploding in 10,000 square meters within 1 year is only less than 1%. At this time, tempered glass can be called real safety glass.