Determination of optimal modes for the production of micro range metal powders / M. A. Kuznetsov, D. P. Ilyashchenko, E. V. Lavrova [et al.]

Уровень набора: Applied Engineering LettersАльтернативный автор-лицо: Kuznetsov, M. A., specialist in the field of welding production, Senior Lecturer of Yurga technological Institute of Tomsk Polytechnic University, Candidate of Sciences, 1985-, Maksim Aleksandrovich;Ilyashchenko, D. P., specialist in the field of welding production, Associate Professor of Yurga technological Institute of Tomsk Polytechnic University, Candidate of Sciences, 1980-, Dmitry Pavlovich;Lavrova, E. V., Elena Vladimirovna;Solodsky, S. A., specialist in the field of ecology and life safety, Associate Professor of Yurga technological Institute of Tomsk Polytechnic University, candidate of technical sciences, 1980-, Sergey Anatolievich;Podgornykh, O. A., specialist in the field of mechanical engineering, head of laboratory of Tomsk Polytechnic University, 1986-, Oleg Anatolievich;Verkhoturova, E. V., Elena VladimirovnaКоллективный автор (вторичный): Национальный исследовательский Томский политехнический университет, Инженерная школа неразрушающего контроля и безопасности, Отделение электронной инженерии;Национальный исследовательский Томский политехнический университет, Юргинский технологический институт, (2009- )Язык: английский.Резюме или реферат: This paper presents the results of working out the modes of obtaining micro range powders according to the developed method. It is based on the navigation on the material of the vortex plasma flows of heterogeneous plasma and synchronized high-frequency impact on the electrode. The formation of powders is derived from individual particles heated and accelerated using a high-temperature gas jet - plasma. It is obtained in a special original plasma generator by blowing the plasma-forming inert gas into an electric arc resulting between two electrodes. The possibility of obtaining powders of various sizes and chemical composition by this method on the developed technology has been established. The design of the executive equipment that implements the studied generation process of the micro-size range is best suited for steel wires. Experimental studies made it possible to determine the optimal modes for wires of various chemical composition (steel wire, with a diameter of 1.2 mm, OK Autrod 347Si with a diameter of 0.8 mm). Range of parameters and modes of actuating equipment: current of 70-80A; Plasma-forming gas pressure 0.7- 0.8 atm., Wire feed rate 20-40 mm/s, the frequency of ultrasonic oscillations of 50 MHz and 100 MHz. In these conditions, powders are obtained with a dimension of 50-100 ?m..Примечания о наличии в документе библиографии/указателя: [References: 35 tit.].Тематика: электронный ресурс | труды учёных ТПУ | metal powders | optimal modes | plasma torch nozzle | wire | chemical composition | металлические порошки | оптимальные режимы | плазмотроны | химический состав Ресурсы он-лайн:Щелкните здесь для доступа в онлайн | Щелкните здесь для доступа в онлайн
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[References: 35 tit.]

This paper presents the results of working out the modes of obtaining micro range powders according to the developed method. It is based on the navigation on the material of the vortex plasma flows of heterogeneous plasma and synchronized high-frequency impact on the electrode. The formation of powders is derived from individual particles heated and accelerated using a high-temperature gas jet - plasma. It is obtained in a special original plasma generator by blowing the plasma-forming inert gas into an electric arc resulting between two electrodes. The possibility of obtaining powders of various sizes and chemical composition by this method on the developed technology has been established. The design of the executive equipment that implements the studied generation process of the micro-size range is best suited for steel wires. Experimental studies made it possible to determine the optimal modes for wires of various chemical composition (steel wire, with a diameter of 1.2 mm, OK Autrod 347Si with a diameter of 0.8 mm). Range of parameters and modes of actuating equipment: current of 70-80A; Plasma-forming gas pressure 0.7- 0.8 atm., Wire feed rate 20-40 mm/s, the frequency of ultrasonic oscillations of 50 MHz and 100 MHz. In these conditions, powders are obtained with a dimension of 50-100 ?m.

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