Design and Characteristics of a Laminar Plasma Torch for Materials Processing

Cao, Xiuxia; Yu, Deping; Xiao, Meng; Miao, Jianguo; Xiang, Yong; Yao, Jin

doi:10.1007/s11090-015-9661-6

Cited by 39 publications

(24 citation statements)

References 13 publications

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“…Basically, thermal plasma jets can be generated in devices called plasmatrons by direct current (DC), alternating current (AC), radio frequency (RF), or other discharges (Cao et al, 2016). Among DC methods, two main types are distinguished, namely, free-burning arcs (transferred arcs) and plasma torches (non-transferred arcs), which are widely used in materials processing (steel production, metal cutting and coating).…”

Section: Processing With Plasmamentioning

confidence: 99%

Remanufacturing and Advanced Machining Processes for New Materials and Components

Gevorkyan¹,

Rucki²,

Nerubatskyi³

et al. 2022

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Reasonable efforts have been made to publish reliable data and information, but the author and publisher cannot assume responsibility for the validity of all materials or the consequences of their use. The authors and publishers have attempted to trace the copyright holders of all material reproduced in this publication and apologize to copyright holders if permission to publish in this form has not been obtained. If any copyright material has not been acknowledged please write and let us know so we may rectify in any future reprint.The Open Access version of this book, available at www.taylorfrancis.com, has been made available under a Creative Commons Attribution-Non Commercial-No Derivatives 4.0 license.

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Section: Processing With Plasmamentioning

confidence: 99%

Remanufacturing and Advanced Machining Processes for New Materials and Components

Gevorkyan¹,

Rucki²,

Nerubatskyi³

et al. 2022

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“…Сравнительный анализ эффективности плазменной резки металлических материалов в зависимости от конструктивных особенностей плазмотронов показал, что даже при рационально определенных режимах обработки структурообразование поверхности реза будет во многом определяться особенностями электродуговых узлов и газовоздушных трактов (ГВТ) режущих плазмотронов [16]. В то же время среди разработок отечественного электроплазменного оборудования практически отсутствуют инструментальные плазмотроны для прецизионной резки стальных листов при толщине проката до 40 мм, обеспечивающие повышенную точность и качество реза кромок, высокую материальную и энергетическую эффективность.…”

Section: постановка задачиunclassified

Influence of plasma torch design on cutting quality during precision air-plasma cutting of metal

Анахов¹,

Гузанов²,

Матушкин³

et al. 2020

Izv. vysš. učebn. zaved., Čern. metall.

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Optical interferometry and metallographic analysis were used to study structure of cutting seams obtained after 09G2S steel cutting by PMVR-5 plasma torch. These plasma torches have a number of design features in the system of gas-dynamic stabilization of plasma arc. It is shown that application of new plasma torch allows obtaining higher quality of cutting 09G2S steel of medium thickness with high productivity and lower energy costs. Metallographic analysis has shown that qualitative composition of the cut surface structure is almost the same, so priority criteria for comparative quality analysis are parameters of surface microgeometry. Evaluation of this parameter shows high quality of cutting almost along the entire length of a cut, since the influence of technological features of plasma arc cut into the metal affects at a distance of less than 0.3 mm from the edge of the sheet. The use of additional methods of gas-dynamic stabilization in PMVR -5.2 plasma torch (feed symmetry with a double swirl system of plasma-forming gas) allows to achieve additional advantages in terms of surface quality compared to PMVR -5.1. A number of features that affects quality of cut when cutting metals of different thicknesses for welding, is noted depending on the angle of inclination of plasma torch during cutting. Estimates of the surface layer hardness indicate minimal deviations from the requirements of GAZPROM Standard 2-2.4-083 (instructions on welding technologies in the construction and repair of field and main gas pipelines), which allows further use of cutting seams obtained by studied plasma torches for welding without removing zones of thermal influence. Thus, application of new plasma torches makes possible precision finishing plasma cutting of metals, including production of welded joints.

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“…The increased hardness and wear resistance of the surface is the main factor in ensuring the resistance of the material surface to mechanical stress, such as wear, impacts, cracking, and others. To form alloyed coatings on machine parts and tools, surface heating methods are used by highly concentrated heat sources: plasma arc [1,2], plasma laminar jet [3,4], laser [5,6]. The essence of these methods is that the melting of the investigated powder alloy occurs at high temperatures and heat transfer under the influence of highly concentrated energy flows [1][2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Hardness and Wear Resistance of Alloyed Coatings From Fastening CuSn/CrxCy Mixture Hardened by Plasma and Laser

Nguyen¹,

Astafeva²,

Tikhonov³

et al. 2022

Tribol. Ind.

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This article provides an assessment of the possibility of increasing the wear resistance of the alloyed surface layer for steel St3 during plasma and laser heating of the applied surface pre-coating of the mixture of CuSn/CrxCy alloys. Plasma is more suitable for reflow a pre-deposited layer of CuSn/CrxCy with a wide range of particle sizes than laser treatment. As a result, plasma coatings have a high hardness (460-700 HV) compared to laser coatings (250-500 HV). The tests carried out showed that the wear resistance increases in the following order: Steel St3

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Design and Characteristics of a Laminar Plasma Torch for Materials Processing

Cited by 39 publications

References 13 publications

Remanufacturing and Advanced Machining Processes for New Materials and Components

Remanufacturing and Advanced Machining Processes for New Materials and Components

Influence of plasma torch design on cutting quality during precision air-plasma cutting of metal

Evaluation of the Hardness and Wear Resistance of Alloyed Coatings From Fastening CuSn/CrxCy Mixture Hardened by Plasma and Laser

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