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为改变榴弹钢材落后状况,我们利用断裂力学(即裂纹延伸的应用力学)的观点,一方面在现在生产的产品上进行工艺考核和性能试验,另一方面利用先进的检测手段,对破片形成机理进行探讨,经多次试验,研制的新钢材用于榴弹弹体,不仅提高了强度,而且榴弹的威力有了显著的提高.在122榴弹上试验结果,有效破片和杀伤破片与现有的D—60钢相比分别提高57%和41%,破片的质量分布合理,特别是在实战中用途最大的4～8克重的破片数量提高近一倍. 目前已基本找出弹体破碎性与材料的金相组织关系和破片形成机理.
In order to change the backwardness of grenade steel, we use the fracture mechanics (ie, the applied mechanics of crack propagation) to carry out the process evaluation and performance test on the currently produced products. On the other hand, we use the advanced detection methods to analyze the fragmentation mechanism After several trials, the new steel developed for grenade projectiles, not only increased strength, and the grenade’s power has been significantly improved in the 122 grenade on the test results, the effective fragments and kill fragments and the existing D -60 steel compared to an increase of 57% and 41%, the fragment of the mass distribution is reasonable, especially in the actual use of the largest 4 to 8 grams of fragments nearly doubled the number has now basically find the projectile crushing and The metallurgical structure and the formation mechanism of the material.