Nikola Šakić

Optimisation of Process Conditions Using “Experiments with Mixtures”

In production the appearance of processes development in mixtures conditions is often present. For example, it almost regularly happens in chemical and process industry, but also in industry of polymer, rubber manufacturing and in welding and allied processes. For settlements of respond functions, to achieve optimal conditions of process, it is necessarily to use a special kind of experiments: experiments with mixtures. In this paper the basic thesis of such experiment on the example of welding (MAG treatment) under protective gas (gas mixture of Argon, Carbon dioxide, Oxygen) will be presented together with the procedure of numerical and graphical optimisation of process conditions, with previously defined optimisation’s criterions: the mechanical properties of weld, the geometry of weld and loss of alloy elements.