本文从玻璃机械性能的特征,显象管玻壳炸裂的力学理论,以及玻璃表面微裂纹理论等方面作了阐述,进而对显象管自然爆炸的原因进行了分析。文中提出了显象管自然爆炸是来自于:(1)玻壳设计不当,结构应力偏大;(2)玻壳屏面中心厚度过薄,表面状态低劣(存在裂纹、“路子”);(3)生产工艺不当,控制与管理不严;玻璃料自身存在严重的微不均匀性(区)。 This paper elaborates the characteristics of glass mechanical properties, the mechanical theory of glass tube explosion, and the microcrack theory of glass surface, and then analyzes the causes of natural explosion of CRT. In this paper, the natural explosion of kinescope comes from: (1) improper design of glass bulb and large structural stress; (2) the center thickness of glass bulb is too thin and the surface condition is poor (there are cracks and “ways”); 3) improper production technology, lax control and management; glass frit itself there is a serious micro-heterogeneity (area).