Bezrukavaya V. Shock-wave intensification of the chemical thermal treatment processes to enhance constructional steel detail resource

The dissertation is focused on the research into the impact of the shock-wave load on the processes of chemical and thermal treatment, establishing the relations of shock-wave effect on the surface state, mutual relationships between the depth of alloyed layer during chemical and thermal treatment and intensity of the pre-shock wave treatment, for enhancing the resource term of construction steel components. The research resulted in determining of the optimum schemes of shock-wave load and treatment regimes. For the first time, the relations of the saturation zone parameters in the process of chemical and thermal treatment of steel and those characterising the intensity of plastic deformation were established. The experiment helped to define the link between the rate of the explosion impulse and the depth of the alloyed layer. It was proved that applying of the shock-wave treatment as a stimulating factor increased alloyed layer depth during saturation with nitrogen and boron 1.5…2 times and strengthens superficial layer (microstrength) 1.4…1.8 times.