Fronius has expanded its range of applications for arc welding with CMT Advanced. The company says this new application extends the ability to weld or braze thin and very thin sheets with low levels of spatter. The focus is on applications that demand a low and adjustable heat input. However, the company says the extensions primarily concern the potential and quality of the joints. CMT Advanced technology integrates the polarity of the welding current, combined with a reversing motion of the wire, into the process control, with the change of polarityis carried out during the short-circuit phase. One of the two variants is the CMT Advanced process, which allows the user to adjust both the number of consecutive positive or negative current pulses or phases at will. The second variant, CMT Advanced Pulse process, is a combination of a negative CMT phase and a positive pulse phase.