Теоретическая модель инженерии металлических поверхностей микроплазмоискровым легированием с переменной интенсивностью механического воздействия
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CHIGRINOVA, N.. Теоретическая модель инженерии металлических поверхностей микроплазмоискровым легированием с переменной интенсивностью механического воздействия. In: Электронная обработка материалов. 2010, nr. 1(46), pp. 24-29. ISSN 0013-5739.
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Электронная обработка материалов
Numărul 1(46) / 2010 / ISSN 0013-5739 /ISSNe 2345-1718

Теоретическая модель инженерии металлических поверхностей микроплазмоискровым легированием с переменной интенсивностью механического воздействия

Pag. 24-29

Chigrinova N.12
 
1 Обособленное хозрасчетное структурное подразделение „Институт сварки и защитных покрытий“,
2 Институт порошковой металлургии НАНБ
 
Disponibil în IBN: 31 martie 2017


Rezumat

The analysis for physical processes in different combinations of outer impacts on the material in microplasmaspark alloying (MPA, MPA UM, UM MPA UM) has been carried out in the current paper. The physical models for microplasma electrode erosion and melted droplet cooling material of anode in the MPA process have been developed. As a result of numeric solution for tasks of heat conduction with powerful dot heat source for heat release and cooling without sources, it has been established that droplet cooling time for eroded anode is markedly less than other time parameters specifying alloying process. The task has been solved as to determination of optimum impulse duration values as well as optimum values of pause between electrospark charges providing maximal anode erosion velocity. Physical and mathematical model in the form of small vibration theory, the corresponding algorithm and software executed in Mathematica package have been developed for the interpretation of experimental data from the positions of physical mechanisms. The possibility for the solution of multifactor ( input parameters –voltampere and time specifications, output parameters –anode erosion velocity, hardened droplet fraction for eroded anode material)MPA UM control joint process task for obtaining qualitative strengthened surface has been demonstrated with the optimization methodology use.