Results 211 to 220 of about 42,711 (259)
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1993
Abstract Plasma arc welding (PAW) can be defined as a gas-shielded arc welding process where the coalescence of metals is achieved via the heat transferred by an arc that is created between a tungsten electrode and a workpiece. This article discusses the melt-in mode and the keyhole mode of the PAW process, as well as the advantages and ...
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Abstract Plasma arc welding (PAW) can be defined as a gas-shielded arc welding process where the coalescence of metals is achieved via the heat transferred by an arc that is created between a tungsten electrode and a workpiece. This article discusses the melt-in mode and the keyhole mode of the PAW process, as well as the advantages and ...
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FROM TRANSFERRED ARC TO PLASMA TORCHES
High Temperature Material Processes (An International Quarterly of High-Technology Plasma Processes), 2005Thermal plasma generated either by transferred arc or by plasma torches are involved in many industrial processes including, for example, cutting, welding, powder synthesis or coating elaboration by plasma spray techniques. The common feature is that electrical energy is converted into thermal energy, which must be transferred differently following the
Coudert, Jean-François +3 more
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Initiation of Arcing at a Plasma-Wall Contact
IEEE Transactions on Plasma Science, 1982Conditions for the initiation of arcing in a plasma-wall contact were studied experimentally. Arcing could only be initiated by applying a bias voltage producing a net ion current to the wall. Results obtained show that crucial parameters for the initiation of arcing are the wall material, surface contaminations, the voltage across the plasma-wall ...
H. Ehrich, J. Karlau, K.G. Müller
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1993
Abstract Plasma arc cutting (PAC) is an erosion process that utilizes a constricted arc in the form of a high-velocity jet of ionized gas to melt and sever metal in a narrow, localized area. This article discusses the process description, equipment, gases, operating sequence, process considerations, and applications of PAC.
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Abstract Plasma arc cutting (PAC) is an erosion process that utilizes a constricted arc in the form of a high-velocity jet of ionized gas to melt and sever metal in a narrow, localized area. This article discusses the process description, equipment, gases, operating sequence, process considerations, and applications of PAC.
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Robotic ARC Welding and Plasma ARC Cutting
SAE Technical Paper Series, 1987<div class="htmlview paragraph">Robotic arc welding and plasma arc cutting, in general, require precise positioning of the torch relative to the workpiece. To this end, a 1-dimensional non-contact sensor was applied to two assembly plant tasks and found to perform to requirements while maintaining the system's cost effectiveness.</div> < ...
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2016
This chapter focuses on the theoretical description of the physical processes in the Arc plasma torches with different technological applications. The features of electric Arcs and their models for the study of Arc plasma torches are presented. The need to determine the two-dimensional electromagnetic field, especially in the case of an open free Arc ...
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This chapter focuses on the theoretical description of the physical processes in the Arc plasma torches with different technological applications. The features of electric Arcs and their models for the study of Arc plasma torches are presented. The need to determine the two-dimensional electromagnetic field, especially in the case of an open free Arc ...
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Arc plasma jets of a nontransferred plasma torch
IEEE Transactions on Plasma Science, 1996The plasma flow of a nontransferred plasma torch used for thermal plasma processings is produced by the arc-gas interactions between a cathode tip and an anode nozzle and expands as a jet through the nozzle. In this work, numerically calculated images of the are plasma characteristics are found over the entire plasma region, including both an arc-gas ...
null Kyoung Doo Kang, null Sang Hee Hong
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Arc welding, plasma cutting and plasma spraying
Journal of Physics D: Applied Physics, 2013Thermal plasmas are of immense and increasing industrial importance. Their many applications can be divided into those that require relatively low power such as arc welding, plasma cutting, plasma spraying and arc lighting, and those that typically operate at much high powers, including mineral processing, waste treatment and nanoparticle production ...
A. B. Murphy +2 more
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Theory of Magnetic Effects in the Plasma of an Arc
Physical Review, 1939The equations governing electron drift in the presence of a magnetic field are applied to the low pressure uniform positive column plasma. (1) An exponential variation of electron concentration with distance across an arc in a transverse magnetic field, found experimentally, is accounted for quantitatively.
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Joining of Duplex Stainless Steel by Plasma Arc, TIG, and Plasma Arc+TIG Welding Processes
Materials and Manufacturing Processes, 20081.4462 duplex stainless steel (DSS) with a thickness of 6.8 mm was joined by plasma arc, Tungsten Inert Gas (TIG), and plasma arc + TIG welding processes. Impact toughness testing was carried out and fractographs were examined by Scanning Electron Microscopy (SEM).
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