Investigation of ring plasmatron for thermal purifacation of the dismantled pipes of an oil assortment from asphalt-resin-paraffin sediments

© Published under licence by IOP Publishing Ltd.This paper proposes a method of the thermal purification and removal paraffin, without using of mechanical purification of the oil wells and the oil pipeline

Purification the surface of detail from biological contaminations

© Published under licence by IOP Publishing Ltd.More than 70% of biodegradation occur due to the corrosion processes. A biological corrosion causes the greatest damage to the oil and gas-production industry, the Navy and pipelines, constructions of water supply, means of communication. This paper proposes an effective method of purification various surfaces from biological contaminations by using of cold plasma

Localized thermal cleaning method for pumping and compression pipes from asphalt, resin and paraffin deposits using plasma

© Published under licence by IOP Publishing Ltd.The article deals with temperature calculation results at the inner surface of oil-well tubing and side-wall melting of asphalt, resin and paraffin deposits

The metal surface cleaning using a vapor-gas discharge

© 2018 Institute of Physics Publishing. All rights reserved. In this paper, the study results of the surface of samples after their purification using a vapor-gas discharge are presented

Study generator of a cold plasma for sterilization

© 2014 Azat Talgatovich Gabdrakhmanov et al. An effective method of sterilization and disinfection of various surfaces using cold plasma is presented in this work. The results of interaction of the cold-plasma with the test objects are presented

Bjorken sum rule with analytic coupling at low Q2 values

The experimental data obtained for the polarized Bjorken sum rule \Gamma^{(p-n)}_1(Q^2) for small values of Q2 are approximated by the predictions obtained in the framework of analytic QCD up to the 5th order perturbation theory, whose coupling constant does not contain the Landau pole. We found an excellent agreement between the experimental data and the predictions of analytic QCD, as well as a strong difference between these data and the results obtained in the framework of standard QCD.Comment: 9 pages, 1 figur

The study the erosion of the electrodes under the influence moving electric arc

© Published under licence by IOP Publishing Ltd. The paper presents the results of experimental study of the processes of interaction of a moving arc with electrodes pulsed plasma generator in the range of parameters I = 60÷500 A, U 30÷70 V, G 0÷155 l/min, dE 4÷14 mm and LE 2÷20 mm. In this article the results of the study traces left by moving arc on the electrode surfaces are described, and the impact velocity of the arc on the form and sizes these traces, ranging VD 7÷130 m / s. We show the research results of the heating and erosion of the electrodes under the influence of high-current arc moving

Preparation of metal surfaces for application of functional coatings

© Published under licence by IOP Publishing Ltd.This paper proposes an efficient method of plasma purification of metal surfaces before applying coatings or the product finishing treatment. The plasma purification is performed in a steam-gas discharge with an aluminum anode and a liquid cathode

Study of the combined laser-plasma effect on metals

© Published under licence by IOP Publishing Ltd. Interaction processes of laser radiation with the metal surface layer during laser effect, and the main factors influencing the absorption capacity of the metal with a surface processing by a laser beam are considered. The method is proposed for increasing the absorption capacity of laser radiation by plasmatron pre-heating of the material. The results of the combined laser-plasma effect are presented

Surface thermohardening by the fast-moving electric arch

© Published under licence by IOP Publishing Ltd.This paper describes the technology of modern engineering-plasma hardening steels and prospects of its application. It gives the opportunity to manage the process without using of cooling media, vacuum, special coatings to improve the absorptive capacity of hardened surfaces; the simplicity, the low cost, the maneuverability, a small size of the process equipment; a possibility of the automation and the robotization of technological process