Theoretical determination of surface layer quality characteristics of workpieces, tool electrode wear and efficiency of spark eroding

The article reveals theoretical dependencies of surface finish, waviness, microhardness and residual stress on spark eroding conditions. The main factors causing tool electrode wear and influencing the process efficiency are determined. On this basis theoretical dependencies of tool volume wear and process efficiency on process parameters are established. Thanks to these dependencies it is possible to carry out process control over parts surface layer quality characteristics, tool electrode wear and efficiency of spark eroding.