1. The process of vacuum electron beam welding for rear-axle housing semiaxle of coach was introduced and the major problems in the process of welding was analysed.
   介绍了用真空电子束焊接大型客车后桥壳半轴的工艺方法,并就焊接过程中存在的主要问题进行了分析。
2. This paper analyses the early breaking of semiaxle of truck and probes into its causes,putting forward the feasible technological innovation project which will lengthen the service of semiaxle.
   针对某载重汽车后桥半轴常发生早期断裂的现状,进行了分析和探讨,找出了原因,并提出了切实可行的技改方案。

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