The generalized systematization of application of systems and means of the welding equipment on the basis of mechatronic and mechanical designs concerning maintenance of operational characteristics of welds and the welded layers at electric arc welding-surfacing by a melting electrode is offered. It is shown that the improvement of the mechanical properties of the welded joint can be obtained by introducing new components and parts into the standard equipment. The estimation of technical and technological actions in the process of welding for formation of purposeful influence on conditions of crystallization of metal of a pool is given.