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How to reduce the glass self - explosion rate

Answer: due to the instability of nickel sulfide crystals inside the glass, the volume of nickel sulfide crystals changes when external force impacts or temperature changes, resulting in glass breakage.The main factors causing self-explosion are the change of temperature, the existence of borehole and cutting Angle and the action of external forces.The hole hole and cutting Angle should be chamfered to minimize stress concentration.Heat soak the glass.