液压支架在矿井下作业时出现的缸体爆裂现象是严重的安全和质量事故。针对事故缸体取样进行金相分析,并重新取样进行正火处理后再次进行金相分析,将2次分析结果进行对比,找出缸体爆裂的原因及防止爆裂应采取的措施。 The burst of the cylinder block that occurs when the hydraulic supporter works in the mine is a serious safety and quality accident. Metallurgical analysis of the accident cylinder sampling, and re-sampling for normalizing after metallurgical analysis again, the second analysis of the results were compared to find out the reasons for the burst of the cylinder and the measures should be taken to prevent the burst.