动车组构架激光-MAG复合热源焊接工艺参数

Laser-MAG Hybrid Welding Process Parameters for EMU Bogie Frame

针对高速列车转向架焊接构架中典型的平板对接接头、T型角接接头和管板搭接接头,采用激光-MAG电弧复合热源焊接方法进行了系统的焊接工艺试验,确定了平板对接、T型角接和管板搭接接头的坡口角度、钝边尺寸和组焊间隙,以及相应的激光-MAG复合热源焊接工艺参数,为激光-电弧复合焊接方法在构架制造中的应用提供了工艺参数和技术基础.

Aiming at the typical welded joints for the bogie frame of EMU including butt joints,T-type joints and overlap joint for the tube and plate.Systematic welding process experiments were conducted by using laserMAG hybrid welding method.The groove angel,blunt edge size,welding gap and other welding parameters were determined for the three type joints.The results provide the welding process parameters and technical basis for the application of the laser-MAG hybrid welding method in the bogie frame manufacturing.