一、前言 炮尾是火炮的重要构件之一,它不但起到连接身管和闩体的结构作用,而且还承受发射时的巨大冲击载荷。因此,在确定炮尾用钢时必须考虑所要求的机械性能、毛坯尺寸和热处理规范的特点等。 常用的、不同类型火炮炮尾钢号与确定其用钢的曲线见图1和图2。 I. INTRODUCTION Bullet tail is one of the important components of artillery. It not only plays the role of the structure connecting the barrel and the latch body, but also withstands the huge impact load upon launch. Therefore, the determination of gun tail steel must take into account the required mechanical properties, the size of the blank and heat treatment specifications and so on. Commonly used, different types of artillery gun tail number and to determine the steel curve shown in Figure 1 and Figure 2.