The result of the effect of stress-pulse regulation on the process of manual arc welding with the connection of pulse generator is presented. Technology of stress-pulse regulation is accessible and easy to use: the equipment is so small that it can be applied in any convenient place. At the same time, there is a practical alignment of the microhardness of the zone of the base metal of the welded plates, the transition zone and the zone of the weld, which indicates the absence of residual stresses of the welded parts. The results of the research confirm the effectiveness and prospects stress-pulse regulation in any production.