研究了某镀铬优质衬管钢射击后的烧蚀情况 ,作了电镀和金相观察 ;计算了火药燃气的温度 ,并根据实弹射击过程 ,模拟了枪管所承受的温度变化历程。温度的计算结果能很好地解释试验结果 ,表明根据枪管材料是否发生相变来验证温度计算是正确的。最后 ,分析了枪管失效破坏的原因 The ablation of a chrome-plated high-quality liner steel after shooting was studied, and electroplating and metallographic observations were made. The temperature of the gunpowder gas was calculated. According to the firing process of the projectile, the temperature history of the barrel was simulated. The results of temperature calculations explain the results very well and show that the temperature calculation is validated based on whether phase changes have occurred in the barrel material. Finally, the reason why the failure of barrel was destroyed was analyzed