The article presents findings from experimental studies into the rationale of restoring the ploughshares using the contact welding method, carried out to justify parameters of the resistance welding mode, which ensures required quality of the contact deposited layer. The subject of the research is a compound of welding composite materials deposited on the surface of flat parts and the mode of resistance welding, as well as parameters of their interdependence. According to the above, the main parameters of the welding mode were determined based on the outcomes from the studies of parameters of resistance welding of the formed powder composite material on the working surface of a flat part. The specified parameters serve as the basis for ensuring the required quality level of the deposited layer.