1. The impact of glass quality defects: The parts of glass that contain stones and impurities are the thin points of tempered glass and also the places where stress accumulates. Especially if the stone is located in the tensile stress zone of tempered glass, it is an important factor leading to cracking. Stones exist in glass and have a different coefficient of expansion than the vitreous body. After glass tempering, the stress in the crack area around the stone will increase exponentially. When the expansion coefficient of the stone is smaller than that of glass, the tangential stress around the stone is in tension. The crack propagation that exists along with the stone is prone to occur.

2. Due to improper heating process or operation, the surface of glass may have defects such as scratches, explosions, and deep edges, which can easily cause stress accumulation or lead to self explosion of tempered glass.

From a conclusive point of view, tempered glass itself does have certain self explosion factors, but the main reason still lies in the manufacturing process of tempered glass itself.

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