Cantilever Backing Welding Machine

Cantilever backing welding is performed before submerged arc welding of box girders to prevent large currents from burning through the bottom of the weld. It is composed of a trolley, a welding arm, a welding gun mechanical tracking device, a pneumatic system, an electrical control system, a welding machine recovery system, and a gas welding power supply.

Backing welding of box girder generally adopts single arc single wire method, or double arc double wire method.

Technology Parameter:

Applicable Workpiece Size 300-1200mm
Workpiece Length 4000-15000mm
Welding Speed 0.3-1.5m/min
Return Speed 3m/min
Welding Position Horizontal welding