Relevant bibliographies by topics / Gas plasma torch

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Gas plasma torch'

Author: Grafiati
Published: 28 May 2022
Last updated: 31 July 2025

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Journal articles on the topic "Gas plasma torch"

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Korzhyk, V., Wang Haichao, I. Konstantynov, et al. "THEORETICAL STUDY OF GAS DYNAMIC AND THERMAL PROCESSES OCCURRING DURING PLASMA ARC CUTTING WITH REVERSE POLARITY." Sciences of Europe, no. 142 (June 9, 2024): 67–76. https://doi.org/10.5281/zenodo.11535717.

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The work is devoted to the numerical modeling of gas-dynamic and thermal processes during plasma-arc cutting of metals at reverse polarity using air as a plasma-forming gas. Using the developed mathematical model of thermal, gas-dynamic and electromagnetic processes in electric arc plasma generated by cutting plasma torches with reverse polarity, the main characteristics of the arc plasma flow inside the working channel of the plasma torch, in the open area of the arc and in the cutting cavity are determined. It has been established that the characteristics of the arc plasma under study are si
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Matushkina, I. Yu, S. V. Anakhov, and Yu A. Pyckin. "Design of a new gas-dynamic stabilization system for a metal-cutting plasma torch." Journal of Physics: Conference Series 2094, no. 4 (2021): 042075. http://dx.doi.org/10.1088/1742-6596/2094/4/042075.

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Abstract The analysis of the influence of various design solutions of the gas-dynamic stabilization system in plasma torches for cutting metals on the efficiency of equalizing the velocities of gas flows along the cross-section of the gas path is carried out. It is noted that the efficiency evaluation method developed by the authors should be based on the calculation of the uniformity of the gas flow velocity distribution over the cross-section of the gas-air path of the plasma torch. A vortex stabilization system using two swirlers is proposed. The effect of improving the reliability and qual
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YUAN, X. Q., T. Z. ZHAO, W. K. GUO, and P. XU. "PLASMA FLOW CHARACTERISTICS INSIDE THE SUPERSONIC D.C. PLASMA TORCH." International Journal of Modern Physics E 14, no. 02 (2005): 225–38. http://dx.doi.org/10.1142/s0218301305003016.

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A magnetohydrodynamic (MHD) model, which describes supersonic plasma flow inside the torch, is presented in this paper. It is a two-dimensional model but includes the K -epsilon model of turbulence, the gas viscous effects and compressible effects. The PHOENICS software is used for solving the governing equations, i.e. the conservation equations of mass, momentum, and energy together with the equations describing the K -epsilon model of turbulence. The calculated arc voltages and gas inflow rates are consistent with the experimental results when arc current and the working gas are the same as
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Li, Shuangliang, and Jing Tao. "DC Arc Plasma Numerical Simulation Calculation Review." Academic Journal of Science and Technology 13, no. 1 (2024): 135–39. http://dx.doi.org/10.54097/cw6v2177.

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This study established a three-dimensional numerical model based on the Fluent software, listing the commonly used boundary conditions, physical models, and basic assumptions in the process of DC arc plasma numerical simulation. By combining multiple literature analyses, the influence of working gas flow rate, working current magnitude, degree of gas swirl, and non-swirling gas on the internal physical fields of the DC arc plasma torch was investigated. The research results indicate that the temperature, current density, plasma flow velocity, and pressure inside the plasma torch all increase w
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Kongpiboolkid, W., and R. Mongkolnavin. "Simulation of 3D vortex jets in plasma torch application." Journal of Physics: Conference Series 2145, no. 1 (2021): 012021. http://dx.doi.org/10.1088/1742-6596/2145/1/012021.

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Abstract The gas tunnel type plasma jet is an effective heat source for thermal processing applications such as plasma spraying. The key concept of gas tunnel plasma is its torch configuration, especially the role of the vortex gas flow. This is very important for the stability and energy density of the plasma jet produced. This work studied the flow of gas vortex in 3 dimensions using a finite element simulation. The simulation is based on solving partial differential equations where the incompressible Navier-Stokes equation is used as a governing equation that describes the laminar flow. The
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Zhang, Ju Fan, Bo Wang, and Shen Dong. "The Design of an Atmospheric Pressure Plasma Torch Used for Polishing Ultra-Smooth Surfaces." Key Engineering Materials 364-366 (December 2007): 340–45. http://dx.doi.org/10.4028/www.scientific.net/kem.364-366.340.

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As there are always certain defects on the final surface of large-scale lightweight mirrors, which are formed in traditional mechanical polishing process, such as microcracks, lattice disturbances, plastic deformation, and so on, an atmospheric pressure plasma polishing method is a good solution to this problem. As a key component, the design of the capacitance coupling atmospheric pressure radio-frequency plasma torch is introduced. The designed torch uses water cooled coaxial aluminium electrodes with special treatment to avoid arcing between them. In normal machining process, the mixture of
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Gulyaev, I. P., V. I. Kuzmin, M. P. Golubev, P. A. Tyryshkin, and A. V. Dolmatov. "VISUALIZATION OF THE gas-dynamic STRUCTURE OF PLASMA FLOWS OF A PNK-50 plasma torchusing THE SHADOW METHOD." Yugra State University Bulletin 14, no. 4 (2018): 61–68. http://dx.doi.org/10.17816/byusu20180461-68.

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The paper presents the study of the gas-dynamic structure of air plasma flows produced by the PNK-50 spray torch using the shadow (schlieren) method. The operation of the plasma torch was studied in three different configurations, differing, among other things, by the diameter of the output section of the channel: 6, 8, 10 mm. The subsonic and supersonic modes of operation of the plasma torch were investigated in the range of plasma-forming air flow 1.4-10.5 g / s and arc current range 140-230 A.In all typical modes of operation of the plasma torch, the flow has a developed turbulent structure
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Gerasimov, Alexander, Alexander Kirpichnikov, and Leonid Rachevsky. "Determination of gas temperature in the plasmatron channel according to the known distribution of electronic temperature." Thermal Science 17, no. 4 (2013): 1251–54. http://dx.doi.org/10.2298/tsci1304251g.

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An analytical method to calculate the temperature distribution of heavy particles in the channel of the plasma torch on the known distribution of the electronic temperature has been proposed. The results can be useful for a number of model calculations in determining the most effective conditions of gas blowing through the plasma torch with the purpose of heating the heavy component. This approach allows us to understand full details about the heating of cold gas, inpouring the plasma, and to estimate correctly the distribution of the gas temperature inside the channel.
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Punjabi, Sangeeta, Dilip Barve, Narendra Joshi, et al. "Computational Fluid Dynamics (CFD) Simulations and Experimental Measurements in an Inductively-Coupled Plasma Generator Operating at Atmospheric Pressure: Performance Analysis and Parametric Study." Processes 7, no. 3 (2019): 133. http://dx.doi.org/10.3390/pr7030133.

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In this article, electrical characteristics of a high-power inductively-coupled plasma (ICP) torch operating at 3 MHz are determined by direct measurement of radio-frequency (RF) current and voltage together with energy balance in the system. The variation of impedance with two parameters, namely the input power and the sheath gas flow rate for a 50 kW ICP is studied. The ICP torch system is operated at near atmospheric pressure with argon as plasma gas. It is observed that the plasma resistance increases with an increase in the RF-power. Further, the torch inductance decreases with an increas
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Gharaeinia, M., S. Saviz, and A. H. Sari. "Influence of the inlet gas velocity components on the survival of the vertex of gas in the plasma torch." Journal of Theoretical and Applied Physics 14, no. 1 (2019): 1–10. http://dx.doi.org/10.1007/s40094-019-00357-1.

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Abstract The vortex gas injection into plasma torch is considered as a method for reducing electrodes erosion. In order to investigate the effects of vortex gas injection on plasma structure, as well as the effect of gas viscosity on the rate of rotation, a three-dimensional nonequilibrium and time-dependent non-transferred DC plasma torch model has been simulated. Viewing the general characteristics of the plasma shows that the model works well. The results have shown that if the components of the inlet gas velocity are not properly selected, it is possible that the rotary effects of the gas
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Dissertations / Theses on the topic "Gas plasma torch"

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Pollack, Brian R. "Establishing isokinetic flow for a plasma torch exhaust gas diagnostic for a plasma hearth furnace." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/38392.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1996, and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1996.<br>Includes bibliographical references (leaves 59-60).<br>by Brian R. Pollack.<br>M.S.
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Bazaleev, M. I., S. E. Donets, V. V. Lytvynenko, et al. "Optimization of Technology for Production of Bimetallic Compounds by High-current Relativistic Electron Beam Hardfacing of Nanostructured Coatings." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35128.

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The mechanism of remote application of nanostructured coatings on metallic substrates is considered in the article. Spectroscopic studies of gas-plasma torch produced when the number of materials used in coatings is irradiated by the high-current relativistic electron beam have been carried out. The differences in the spectra for solid and tubular beams are determined. Measurements of the brightness temperature of gas plasma torch and the position of its maximum are obtained. Prospects of using high-current relativistic electron beams sources with pulse duration ~ (1 ... 2)10 – 6 s for t
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Shiau, Wei-Fang, and 蕭威方. "Destruction of Halogenated Organics in Flue Gas Using Direct Current Plasma Torch." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/05415102484014942576.

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碩士<br>國立屏東科技大學<br>環境工程與科學系<br>90<br>A duct system was designed to simulate the flue gas emission in industrial process. A direct current ( D.C.) plasma torch was installed on the turning point of flue gas duct to substitute the traditional air pollution control devices. The D.C. plasma torch has the characteristics of high temperature, high reactivity, and abundance of free radicals and ultraviolet ray. The pollutants in flue gas can be easily destructed and recombined to form simple molecules when exposed in D.C. plasma torch. To demonstrate the capability and applicability of this system, th
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Lee, Hsuan-Yi, and 李宣億. "The Development of Hot Gas Cleanup System for Thermal Plasma Torch for Biomass Gasification." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/07810555519086581154.

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碩士<br>國立中央大學<br>機械工程研究所<br>96<br>In recent years, developed countries have invested a lot in the development of Integrated Gasification Combined Cycle system. The researched and developments of the Moving Granular Bed Filter also get more and more attention. The dust particulates would be stopped adhered to filter media in the granular bed when the flue gas passes the filer. However, there are still many problems in the GBF, such as the formation of stagnant zones and filter sands been broken in the process, which influence the filtration efficiency. We have already successfully developed vari
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Chang, Ho-You, and 張合佑. "The Influence Analysis of Different Adding Gas on the Decomposition of CF4 via Microwave Plasma Torch Reactor." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/57160183621587198411.

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碩士<br>雲林科技大學<br>環境與安全工程系碩士班<br>96<br>An innovative microwave plasma torch reactor, MPT-POLE, has been designed for treating the perfluorocompound (PFC) gases. By using CF4 as a modeling gas, different operating variables such as CF4 flow-rates, additive gas flow-rates, and microwave power were employed to test the efficiency of the reactor. Decomposition and removal efficiency (DRE) value calculated via FTIR (Fourier transform infrared spectrophotometer) quantitative analysis is used as an index for evaluating the abatement efficiency of the PFC. This study aimed to discuss the influence of
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Su, Cheng-Chi, and 蘇城祺. "A Preliminary Study of Microwave Plasma Torch Reactor Apply to the Decomposition of the Tail Gas of Semiconductor Manufacturing Process." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/88561157645193078036.

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碩士<br>國立雲林科技大學<br>環境與安全工程系碩士班<br>97<br>The greenhouse effect is one of the most important topics that the whole world cares about recent years. The main reason of the greenhouse effect on earth is mainly because the massive usage of petrochemical fuels by human beings and emit large amounts of carbon dioxide during the combustion processes and the usage of perfluorinated compounds (PFCs) during the industrial processes, etc. The common characteristic of these greenhouse effect gases is their strong infrared absorption ability, which can increase the global temperature, seriously threaten the
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Books on the topic "Gas plasma torch"

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McClure, John C. A study of gas flow pattern, undercutting and torch modification in variable polarity plasms arc welding. National Aeronautics and Space Administration, 1995.

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Book chapters on the topic "Gas plasma torch"

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Mauricio Espinel Pérez, Nelson. "Synthesis of thermophosphate fertilizers by a plasma torch." In Organic Fertilizers - New Advances and Applications [Working Title]. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.1001352.

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Phosphoric rock (PR) is the basic building block to produce animal feed, fertilizers, and industrial phosphates. Global demand for PR is estimated to grow from 207 Mtons in 2018 to 263 Mtons in 2035, of which Colombia contributes approximately 0.06 Mtons per year. A novel technology to carry out calcination is the plasma torch, where the electrical resistivity of the system is increased and ionized gas is produced that can reach temperatures above 10,000 °C, which facilitates the transformation of PR into thermophosphates. Two samples of PR from the region central of the Boyacá department, Col
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Thiyagarajan Magesh and Waldbeser Lillian. "Portable Plasma Medical Device for Infection Treatment." In Studies in Health Technology and Informatics. IOS Press, 2012. https://doi.org/10.3233/978-1-61499-022-2-518.

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The purpose of this study was to determine the effects of plasma treatment on bacteria in liquid phases. We predict that the plasma gas can penetrate the liquid culture media and plasma treatment will efficiently kill the bacteria at unique time and distance parameters. It is also hypothesized that less stringent plasma treatment will negatively affect the growth rate of some species of bacteria and possibly their pathogenicity. The bacteria were exposed to hot and cold plasma at various time lengths and distance parameters. Our results indicated that 2 minutes of hot plasma treatment with the
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Dash, Nehal, Apurba Kumar Roy, Sanghamitra Debta, and Kaushik Kumar. "Optimization of Process Parameters in Plasma Arc Cutting Applying Genetic Algorithm and Fuzzy Logic." In Soft Computing Techniques and Applications in Mechanical Engineering. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-3035-0.ch005.

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Plasma Arc Cutting (PAC) process is a widely used machining process in several fabrication, construction and repair work applications. Considering gas pressure, arc current and torch height as the inputs and among all possible outputs, in the present work Material Removal Rate and Surface Roughness would be considered as factors that determines the quality, machining time and machining cost. In order to reduce the number of experiments Design of Experiments (DOE) would be carried out. In later stages applications of Genetic Algorithm (GA) and Fuzzy Logic would be used for Optimization of proce
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Zhang, Weigang, Changming Xie, Xi Wei, and Min Ge. "C/C-ZrB2-ZrC-SiC Composite Derived from Polymeric Precursor Infiltration and Pyrolysis." In MAX Phases and Ultra-High Temperature Ceramics for Extreme Environments. IGI Global, 2013. http://dx.doi.org/10.4018/978-1-4666-4066-5.ch014.

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Part II. Mechanical and ablation properties of the 2D C/C-ZrB2-ZrC-SiC composites with a fiber volume fraction of 17.6%, fabricated by infiltration and co-pyrolysis of blended polymeric precursors, were studied in this Part II. Flexural strength and fracture toughness of the composites were found to be influenced strongly by the thickness of the deposited pyrolytic carbon interphase, a composite with the pyrolytic carbon volume fraction of 22.3% exhibits improved bending strength and fracture toughness of 127.9 MPa and 6.23 MPa·m1/2, respectively. The pseudo-plastic strain to failure of the co
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Conference papers on the topic "Gas plasma torch"

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Schmitt, J., R. Vaßen, G. Mauer, S. Zimmermann, C. Kirner, and J. Schein. "Investigation of Process Stability and Effectiveness Using a Multi-Arc Spraying Torch with Axial Suspension Injection." In ITSC 2025. ASM International, 2025. https://doi.org/10.31399/asm.cp.itsc2025p0060.

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Abstract This research establishes a foundation for enhancing suspension plasma spraying stability and efficiency. Building on previous work, we evaluated three gas mixtures using the Axial III torch with a consistent nozzle throat diameter. Our analysis focuses on in-flight particle measurements and coating performance for each gas mixture, while accounting for the plasma transport coefficients. Additionally, we recorded voltage and current measurements across all three cathode-anode units.
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Kavka, T., A. Maslani, V. Kopecky, V. Sember, O. Chumak, and M. Hrabovsky. "Influence of Plasma Generation Conditions in Gas-Water Torch on Spraying Process." In ITSC2008, edited by B. R. Marple, M. M. Hyland, Y. C. Lau, C. J. Li, R. S. Lima, and G. Montavon. Verlag für Schweißen und verwandte Verfahren DVS-Verlag GmbH, 2008. http://dx.doi.org/10.31399/asm.cp.itsc2008p1445.

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Abstract The present paper examines a hybrid DC arc thermal plasma torch with gas-water stabilisation and its application for thermal spraying. The torch was worked out based on the water-stabilised plasma torch WSP, main features of which are high temperature of the generated plasma and high powder through-put. In the hybrid torch the cathode part is modified in the way like in gas torches, which not only provides proper stabilisation of the arc in this region and cathode protection from contact with stabilising water but also allows to vary properties of the generated plasma. Change of the s
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Pershin, L., and J. Mostaghimi. "Yttria Deposition by a Novel Plasma Torch." In ITSC2010, edited by B. R. Marple, A. Agarwal, M. M. Hyland, et al. DVS Media GmbH, 2010. http://dx.doi.org/10.31399/asm.cp.itsc2010p0038.

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Abstract Carbon dioxide (CO2) and hydrocarbons (such as CH4) gas mixtures generate plasmas with much higher enthalpy and thermal conductivity, leading to higher spray process efficiency and improved heat transfer to the sprayed powder. We have employed a DC plasma torch operated with CO2+CH4 gas mixture, which has been developed at the Centre for Advanced Coating Technologies (CACT) at the University of Toronto, to deposit various coatings. This study was focused on the effect of this plasma gas mixture on the in-flight particle parameters during plasma spraying of Yttria (Y2O3). The results w
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Hartmann, R., and K. D. Landes. "Diagnostics and Applications of an Innovative Plasma Torch Generating a Broad Plasma Jet." In ITSC 2000, edited by Christopher C. Berndt. ASM International, 2000. http://dx.doi.org/10.31399/asm.cp.itsc2000p0015.

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Abstract Conventional DC plasma torch designs lead to a circular cross-section of the emanating plasma jet. Consequently in surface treatment applications the plasma jet hits the substrate within a limited circular working area. Large scale workpieces therefore have to be scanned resulting in a time-consuming procedure. The innovative DC plasma torch system LARGE is characterized by the arrangement of the anode and the cathode opposite to each other on a common axis with a variable distance. The central body of the torch between the electrodes is divided into electrically insulated cascade pla
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Marqués, J. L., K. Ramachandran, R. Vaßen, and D. Stöver. "Modelling a Plasma Torch for Atmospheric Plasma Spraying (APS): Optimization of Particle Injection Near the Torch Outlet According to the Gas Flow within the Torch." In ITSC2006, edited by B. R. Marple, M. M. Hyland, Y. C. Lau, R. S. Lima, and J. Voyer. ASM International, 2006. http://dx.doi.org/10.31399/asm.cp.itsc2006p0301.

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Abstract Understanding the particle injection into the gas flow issuing from an APS torch is necessary to optimize the spraying parameters. In order to solve numerically this task, the distribution of gas velocity and temperature at the torch outlet is required. In this work this is achieved by developing a model which not only delivers the solution for the electrically charged gas flow within the torch, but also includes the thermodynamical condition of minimum entropy production. This additional condition fixes the size of the electric arc inside the torch, whose radius is particularly respo
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Kavka, T., J. Matějíček, P. Ctibor, and M. Hrabovský. "Spraying of Metallic Powders by Hybrid Gas/Water Torch and the Effects of Inert Gas Shrouding." In ITSC2011, edited by B. R. Marple, A. Agarwal, M. M. Hyland, et al. DVS Media GmbH, 2011. http://dx.doi.org/10.31399/asm.cp.itsc2011p1351.

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Abstract A hybrid DC arc plasma torch, combining water and gas stabilization, offers a high flexibility in plasma characteristics. These can be controlled in a wide range by the torch operational parameters, such as arc current and secondary gas flow rate. In this study, their influence on plasma spraying of tungsten and copper was investigated. To suppress the in-flight oxidation of the metals, inert gas shrouding was applied. In-flight particle diagnostics, analysis of free-flight particles and coatings was performed for spraying experiments in the open atmosphere and with argon shrouding. B
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Noguès-Delbos, E., S. Goutier, M. Vardelle, P. Fauchais, and P. Granger. "Comparative Study between Ar-H2 and N2-H2 Plasma Gas Mixtures: Application to ZrO2-Y2O3 Coatings." In ITSC2008, edited by B. R. Marple, M. M. Hyland, Y. C. Lau, C. J. Li, R. S. Lima, and G. Montavon. Verlag für Schweißen und verwandte Verfahren DVS-Verlag GmbH, 2008. http://dx.doi.org/10.31399/asm.cp.itsc2008p1387.

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Abstract In plasma spray process, ceramic coatings can be sprayed by using either argon-hydrogen or nitrogen-hydrogen plasma gas mixtures. Starting from a given particle size distribution the question is what are the spray parameters allowing achieving similar coatings with these types of plasmas? The problem is made more complex because a torch working with Ar-H2 is different from that using N2-H2 as plasma forming gas. It is thus necessary to compare the gas mixture properties, the torches working conditions (mean voltage and thermal efficiency for given current), the arc column diameter rel
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Sun, X., and J. Heberlein. "Fluid Dynamic Effects on Plasma Torch Anode Erosion." In ITSC2003, edited by Basil R. Marple and Christian Moreau. ASM International, 2003. http://dx.doi.org/10.31399/asm.cp.itsc2003p1261.

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Abstract Anode erosion in plasma spray torches results in coating deterioration. The usable life of a torch anode is strongly dependent on the fluid dynamic behavior of the plasma inside the torch, which in turn depends on the geometric design of the anode and the operating parameters. In order to study the relative importance of these effects, cold flow investigations have been performed with a torch having a glass anode with the same geometric dimensions as a Praxair-TAFA SG 100 torch. The density differences between the arc and the cold gas were simulated by injecting heated helium from the
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Popov, S. D., V. E. Popov, D. I. Subbotin, et al. "Electric arc plasma pyrolysis of natural gas by a high-voltage AC plasma torch." In 8th International Congress on Energy Fluxes and Radiation Effects. Crossref, 2022. http://dx.doi.org/10.56761/efre2022.c1-o-030501.

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The article considers the plasma pyrolysis of hydrocarbons by the high-voltage AC plasma torch. Calculations are given for various hydrocarbons and their mixtures, as well as experimental data on plasma pyrolysis of natural gas. The methane conversion in the experiment was from 76 to 86%, and the energy consumption was 20.6–23.3 kWh/kg of hydrogen.
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Glocker, B., G. Nentwig, and E. Messerschmid. "10-40 kW STEAM RESPECTIVELY MULTI-GAS THERMAL PLASMA TORCH DEVELOPMENT." In Progress in Plasma Processing of Materials, 1999. Begellhouse, 2023. http://dx.doi.org/10.1615/itppc-1998.60.

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Reports on the topic "Gas plasma torch"

1

Pollack, Brian R. Establishing isokinetic flow for a plasma torch exhaust gas diagnostic for a plasma hearth furnace. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/582269.

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