Results 241 to 250 of about 32,478 (295)
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Electrical Engineering, 1935
During the course of the extensive research in arc welding being conducted at Lehigh University under joint sponsorship of the A.I.E.E. and several other organizations, apparatus for experimental welding at atmospheric pressure in controlled pure gas atmospheres has been designed and constructed.
Gilbert E. Doan, William C. Schulte
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During the course of the extensive research in arc welding being conducted at Lehigh University under joint sponsorship of the A.I.E.E. and several other organizations, apparatus for experimental welding at atmospheric pressure in controlled pure gas atmospheres has been designed and constructed.
Gilbert E. Doan, William C. Schulte
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Ultrasound in arc welding: A review
Ultrasonics, 2015During the last decade, the introduction of ultrasound techniques in arc welding with the intention of improving the operational performance and technical characteristics of the welding processes have been studied intensively. In this work is presented a broad review of the literature surrounding the utilization of this technique.
Carlos Enrique Niño Bohórquez +1 more
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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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AIP Conference Proceedings, 1982
A discussion of the factors controlling the size and shape of the weld fusion zone is presented along with a description of current theories of heat and fluid flow phenomena in the plasma and the molten metal weld pool. Although experimental results confirm that surface tension, plasma jets, and weld pool convection all strongly influence the fusion ...
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A discussion of the factors controlling the size and shape of the weld fusion zone is presented along with a description of current theories of heat and fluid flow phenomena in the plasma and the molten metal weld pool. Although experimental results confirm that surface tension, plasma jets, and weld pool convection all strongly influence the fusion ...
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Measurements of Welding Arcs and Plasma Arcs
1991Welding and plasma arcs are among the most powerful emitters of optical radiation. The temperature of welding and plasma arcs is extremely high and the ultraviolet output is therefore potentially hazardous. As is well known the visible radiation emitted by these arcs is blinding, and several cases of severe retinal burns are known to have caused ...
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Electrical Engineering, 1932
Research of extreme importance in the field of electric welding is reviewed briefly in this progress report. Laboratory tests have demonstrated the impossibility to strike an arc with 1 2 0 volts between pure iron electrodes in an atmosphere of pure argon, an observation that may require the modification of basic conceptions of the nature of the ...
Gilbert E. Doan, J. L. Myer
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Research of extreme importance in the field of electric welding is reviewed briefly in this progress report. Laboratory tests have demonstrated the impossibility to strike an arc with 1 2 0 volts between pure iron electrodes in an atmosphere of pure argon, an observation that may require the modification of basic conceptions of the nature of the ...
Gilbert E. Doan, J. L. Myer
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Arc behaviour and weld formation in gas focusing plasma arc welding
Science and Technology of Welding and Joining, 2019Improving penetrability is a key issue in plasma arc welding (PAW). Increasing plasma energy is one way to improve arc penetrability.
Yu Cheng Lei +5 more
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Control of arc-welding using arc-sensing during welding
2000This paper describes monitoring of arc welding during welding process. Emphasis is on gas metal arc welding (GMAW). Input and output welding variables are specified. Experiment results are related to monitoring of welding parameters (voltage, current) and estimation of stability of electric arc at welding.
Dunđer, Marko +2 more
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1980
The spot welding process described in Chapter 11 is not suited to all welds, especially long-path joints needing a gas-tight seal between the two surfaces being joined. However an alternative electric welding technique exists for such situations in the form of electric arc welding.
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The spot welding process described in Chapter 11 is not suited to all welds, especially long-path joints needing a gas-tight seal between the two surfaces being joined. However an alternative electric welding technique exists for such situations in the form of electric arc welding.
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Electric welding by the carbon arc
Journal of the A.I.E.E., 1930This paper discusses the butt welding of steel sheets by the carbon arc process. It explains first that autogenous welding is divided into two main classes, viz., gas and electric; that electric arc welding is divided into two classes, viz., metallic and carbon arc. Gas and metallic arc welding in general require beveling of plates for butt welds while
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