Emphasizing on Design, Control and in situ Visualization of Gas Nitriding Processes

The article presents a complex system of design, in situ visualization and control of the commonly
used surface treatment process: The gas nitriding process. As a result, possibilities were obtained of
the poly-optimization and poly-parametric simulations of the course of the process combined with a
visualization of the value changes of the process parameters in the function of time, as well as
possibilities to predict the properties of nitrided layers. For in situ visualization of the growth of the
nitrided layer, computer procedures were developed which make use of the results of the correlations
of direct and differential voltage and time runs of the process result sensor (magnetic sensor), with the
proper layer growth stage. Computer procedures make it possible to combine, in the duration of the
process, the registered voltage and time runs with the models of the process.