Lotous V. Improving the technology of the explosive hardening of mining equipment parts by anadditional pulse action

The analysis of the increasing methods of the mountain equipment parts is given. A sequence of choice of a method of part wear resistance increase is described. The urgency of researches on increase of wear resistance of parts of the mining equipment is proved. It is connected with the fact that now physical deterioration of the production assets of the mining metallurgical complex of Ukraine makes 70–25 %. The analysis of the factors which influence the strength parameters of the superficial layer of the part is given. The postulate that an increment in were resistance of the superficial layer of the part will be the greatest at the boundary value of the uniform deformation proved to be true. The analytical value of boundary uniform deformation is determined in view of the dynamics of hardening. The calculation of the loading parameters at the explosive hardening is executed with the help of the equations of the compressed by a shock wave metal and condition Chapmen-Guge. The researches can be used at the optimum designing of the processes of hardening by plastic deformation and stamping of parts working under conditions of intensive deterioration and character variable loadings. A mode of wear for concrete industrial conditions is established. The basic reason for deterioration of the mountain equipment parts is processes of plastic bearing stress fragile chipping and macro-scratching. Reserves of increase parts hardened by explosion are optimization of parameters of the hardening process and development of the combined technologies of treatment. A method of the combined hardening of dredge ladle teeth is offered. The method includes hardening by a contact charge and shock waves from collision with plate being thrown. Circuits of processes ensuring high efficiency of hardening dredge ladle teeth are developed.