This paper analyses the cause of uncleanness of air pipe line on locomotive,and puts forward taking TIG weld ing tech nology in order to ensure that the quality of pipe line on lo como tive achieves design standard.

• 针对目前机车空气管道内清洁度差的问题,分析其原因,提出采用TIG焊接工艺,以保证机车管道质量达到设计要求。