Scientific paper ID 2305 : 2022/3
METHODOLOGY FOR DESIGNING THE PARAMETERS OF TECHNOLOGICAL NITRIDING REGIME WITH RESPECT TO THE RELATIVE WEAR RESISTANCE OF TOOL STEELS FOR HOT WORKING
Nikolay Tonchev, Galya M. Ilieva, Velichko Machev, Mihail Zagorski
The present study aims to create a methodology for decision making in the process of designing the regime of the technological process of ion nitriding. The methodology is applied about the relative degree of wear Kv for grade tool steels for hot working BH10, BH11 and BH21 and thus the stages of its application are demonstrated. Main procedures such as Design of Experiment, single and multi-criteria optimization are used. With the help of the numerical methodology the tendency in the change is determined for establishing technological regimes and modeling properties of wear, which are finally clarified by nitride zone forming the layer. Since similar steels are analyzed in the study, the general treatment regime is established, which leads to the desired relative wear resistance. The result of the study is obtaining accurate values for the relative degree of wear Kv and their corresponding regimes for the three tested steels. A general range is determined for the whole grade, through the stages of the applied methodology, in which the steels have high wear resistance.
обработваемост на материали моделиране оптимизация ѝонно азотиране технологични режими.machinability of materials modeling optimization ion nitriding technological modes.Nikolay Tonchev Galya M. Ilieva Velichko Machev Mihail Zagorski
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