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SM ISO690:2012 IVANOV, Valeriy. Investigations of the interdependence of technological and energy parameters of the process of electrospark alloying. In: Materials Science and Condensed Matter Physics, Ed. 9, 25-28 septembrie 2018, Chișinău. Chișinău, Republica Moldova: Institutul de Fizică Aplicată, 2018, Ediția 9, p. 270. |
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Materials Science and Condensed Matter Physics Ediția 9, 2018 |
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Conferința "International Conference on Materials Science and Condensed Matter Physics" 9, Chișinău, Moldova, 25-28 septembrie 2018 | ||||||
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CZU: 621.9.048+669 | ||||||
Pag. 270-270 | ||||||
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Rezumat | ||||||
Studies of the process of electrospark alloying (ESA), its technological parameters, the formation of electric spark (ES) coatings and their properties are devoted to the work of many specialists. A lot of experience has been accumulated in the development of new equipment for ESA installations for applying ES coatings in manual and mechanized (automated) modes. At the same time, the problem for production workers is the difference in the controlled energy parameters of processing regimes implemented by the plants of different manufacturers, the lack of unification of these parameters. Known works on the study of the energy parameters of the ESA process are usually of a narrow professional nature, not related to technological processing parameters. This creates certain difficulties in analyzing the efficiency of the ESA process and further improving the facilities. Taking into account that the electric regimes of the ES facilities are characterized by certain values of pulse energy, their duration, frequency and duty cycle, a number of technological parameters of the ESA process were studied using these characteristics, which was the goal of this work. A new technique was used in the work [1]. It is based on the Russian patent No. 2482943 and provides for the determination of parameters characterizing the ESA process under specific technological conditions, the parameters of individual pulses and the energy efficiency of this process. The influence of the electrode material, its length and temperature state on the energy parameters of the ESA process was studied using the "BIG-5" installation [2]. Two electric modes with an impulse energy of 0.32 and 10 J were chosen. Fig. 1 - An example of the energy pattern of the distribution of spark pulses according to the energy of the "BIG-5" installation, mode 28 In Fig. 1, as an example, the characteristic energy picture of the distribution of spark pulses is given in terms of the energy value for the base time of the ESA, taken equal to 10 s. It can be seen that the spark pulses are distributed unevenly, zones of the lower, middle and upper levels. It is established that the energy parameters of the ESA process (maximum values of the energy and duration of pulses, pulsed current) in different electric modes do not depend on the electrode material, its length and temperature state. But at the same time, the electrode material and its temperature influence the direct dependence on the specific quantity and the specific total energy of the upper-level pulses. |
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