Welding. Technologies of High Quality Welding in Automotive Parts.

In high quality arc welding of chasis parts, the pulsed MAG welding method is an essential technology. So it has been improved extensively for robotised welding. Through a combination of a pulsed current waveform and improved wire properties, the droplet volume can be reduced to around half of conventional one. As a result the critical speed to spatter- and defect-free welding is increased. On the other hand by using a wire reforming type torch, the deflection of the wire tip can extensively be restricted and controlled to aim at the target position in joints. As to welding galvanised steel, the vibration of the molten metal pool controlled by the arc force is effective for removal of porosities.