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The article reviews the multizone method of argon stream control in low-temperature electric arc plasma jet. The method is based on the principle when exhaust plasma-supporting gas velocity is changing discretely in the wake of "cathode-muzzle" junction conduction rising reaching a maximum level only in a critical situation when the bypassing arc appears.

Schematic diagram of the installation was represented and the operating principle of electric arc plasma jet with multizone system of gas-dynamic double arcing process prevention was stated.

The multizone regime of argon stream control is implemented using the multizone integrated sweep converter with frequency, width and pulse-type modulations. The timing diagrams of the multizone integrated sweep converter and the features of system transition from one modulation zone to another were shown.

A functional diagram of "cathode-nozzle" transition conductivity sensor was observed and it's operating principle was explained by the example of the timing signals diagrams.

The results of experimental researches were given.

This article could be interesting for specialists in plasm-arc technologies and technological processes automation.


Electric arc plasma jet, bypassing arc, multizone integrated sweep converter, conductivity sensor gram.

Tsitovich Leonid Ignatievich – D.Sc.(Eng.), professor, Head of the Electric Drive and Industrial Plant Automation department, FSSFEI HPE “South Ural State University” (National Research University), Chelyabinsk, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..

Brilina Olesya Gennadievna – PhD (Eng.), associate professor of Electric Drive and Industrial Plant Automation department, “South Ural State University” (National Research University), Chelyabinsk, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..

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