Koleva E.Koleva L.Vassileva V.Vutova K.Tsonevska T.2024-07-102024-07-102024-07-102024-07-102022-04-041742-65961742-658810.1088/1742-6596/2240/1/012037SCOPUS_ID:85128964421https://rlib.uctm.edu/handle/123456789/714Experimental results on the quality of electron beam melting and refining of copper samples by implementing the ``method of washers``are analyzed by using an empirical model estimation approach. The influence is studied of the process parameters - melting power and time of refining, on the residual content of impurities, the refining rate, the overall removal efficiency and the material losses. A graphical user interface is designed and developed for calculation, investigation and multicriterial optimization of the quality of the refined copper samples.enConference Paper