电力机车牵引杆焊接工艺

Welding process of draw bar in electric locomotive

牵引杆作为机车钢结构的主要承载件,牵引杆的焊接质量直接影响到机车行走安全的性能。牵引杆是连接车体与转向架的唯一承载件,承受冲击力与拉应力等力的综合作用,因此对其焊缝的强度和韧性要求极高,介绍机车车辆制造的牵引杆主要采用的焊接操作方法,以及焊接牵引杆时的具体工艺措施,介绍牵引杆焊接缺陷及预防措施。

As a main load-bearing structure,the welding quality of draw bar has a direct impact on the security of locomotive running.Draw bar is the only load-bearing part to join the bogie to the train body,and bears the combination of impact force and tensile stress,so the requirements on strength and toughness are extremely high.The main welding method used to weld draw bar in manufacturing locomotive was introduced.The specific process measures,weld defects and their preventing measures in welding of draw bar were also introduced.