This paper, based on structure of axle case of three parts and the analysis of its weldability, confirms welding technology for the girth welds of axle case in order to keep its weld quality.

• 本文根据三段式桥壳结构，通过焊接工艺性分析．确定了桥壳环缝焊接工艺，保证桥壳质量。