火炮身管内表面激光硬化处理的实验研究

提高身管寿命是火炮行业亟待解决的关键技术问题，激光表面改性技术是解决这一问题的有效方法之一。本文在分析激光表面相变硬化性能的基础上，对身管内表面进行了激光硬化处理实验研究，检测了其内表面阳线和阴线的硬化层硬度和深度，对比分析了离焦量和焦深对其内表面硬化层硬度的影响，并对激光相变硬化层金相组织进行了分析。经激光硬化处理后，身管的内表面硬度有明显提高，硬化层较深，且为很细的条状马氏体组织。

AN EXPERIMENTAL STUDY ON THE LASER HARDENING OF ARTILLERY BORES

Improving the longevity of artillery is always a key problem, and one of the most effective methods to solve this problem is through laser hardening of the artillery barrel. This will improve the ability of guns to resist wearing, ablation and the impact ablation properties. Based on an analysis of the phase transformation and the hardening capability of laser hardening, experiments on the laser hardening of artillery were described and the hardened layer's rigidity and thickness of artillery rifles were analyzed together with the phase transformation of laser hardening. The results of focusing to various depths of the hardening layer were tested. After the experiment, the hardened layer of artillery bore is found to be improved and deepened. The hardened layer is found to be of fine martensitic structure.