Welding power source
Most major suppliers of power sources manufacture a range of power sources with a robotic interface that is dedicated to the particular make of robot. In the majority of cases the power source will have synergic capabilities. This offers the benefit of automatic tuning of the welding process. Only the wire feed speed must be set and the corresponding voltage is automatically selected. This means that less time is spent to get optimum results. This kind of power source can also weld in pulse mode. When welding in this mode, a pulse of current gives one metal droplet per pulse resulting in virtually spatter-free welds, which can be useful when welding high alloy steels or if there is a need to control heat input. Please note though that when welding thin plate materials, the heat input will actually increase during pulse welding, which makes it harder to control burn through.
There are a number of solutions for welding very thin material, either through software or extinguishing and re-igniting the the arc in rapid successions as is the case in Fronius’ Cold Metal Transfer welding process.
The choice of a water or air-cooled welding package is simply a matter of duty cycle, but bear in mind that the arc-on time factor with a robot is much higher than for manual welding.