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Electric resistance welding
About: Electric resistance welding is a research topic. Over the lifetime, 16761 publications have been published within this topic receiving 154851 citations.
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17 Mar 2000TL;DR: In this article, a welding method capable of increasing or decreasing a welding wire feeding speed during welding is presented, where, after short-circuiting is detected, the welding wire feed speed is decreased, and, after a transfer to arcing by being freed from short circuiting, the wire feed rate is increased.
Abstract: A welding method capable of increasing or decreasing a welding wire feeding speed during welding, wherein, after short-circuiting is detected, a welding wire feeding speed is decreased, and, after a transfer to arcing by being freed from short-circuiting is detected, a welding wire feeding speed is increased.
49 citations
TL;DR: In this paper, different welding techniques were used to evaluate the mechanical performance of weldments of HY-80 steel, and the effects of welding methods on weld metal microstructure and mechanical properties including weld metal tensile strength and Charpy V-notch impact toughness over the temperature range −20 to 20°C were investigated.
49 citations
TL;DR: In this paper, a fully automated flux cored arc welding process with bead tempering can be used in repair welding instead of manual metal arc welding in order to eliminate the use of post weld heat treatment.
49 citations
TL;DR: In this article, an attempt was made to develop Activated Tungsten Inert Gas (A-TIG) welding technology for LAFM steel plates of 10mm thick. And the optimum flux was identified as one which gave maximum depth of penetration at minimum heat input values.
49 citations
TL;DR: In this article, the available and current status of laser technologies in welding aluminum alloys is examined and classified into four assemblages, namely, pure or single-beam laser welding, laser-arc hybrid welding, tailored heat source laser welding and other innovative laser welding technologies.
Abstract: The drive toward fulfilling weight reduction obligation, superior weld quality requirement, and industrial manufacturing rationale has sprung up considerable interest in applying laser welding technology on aluminum alloys. Nevertheless, porosity, solidification cracking, and surface reflectivity have been the major banes of laser welding of aluminum alloys. However, literature has shown that positive efforts have been accomplished in reducing these fundamental concerns by adopting careful selection of welding procedure, modification of pure laser welding techniques, and the use of appropriate filler metal. Albeit, there is still upbeat progression on the application and improvement of laser welding of aluminum alloys. At present, laser welding technology has the potential of fulfilling industrial requirements in joining lightweight aluminum alloys because of its capacity for automation and intrinsic flexibility, precision and repeatability, low general heat input, high welding speed, and low weld distortion. As a result, this report examines the available and current status of laser technologies in welding aluminum alloys. It further categorizes the laser technologies of aluminum alloys into four assemblages, namely, pure or single-beam laser welding, laser-arc hybrid welding, tailored heat source laser welding, and other innovative laser welding technologies, respectively. Mechanical, corrosion, and microstructural behaviors of laser welded aluminum alloys are also studied. Conversely, some of the research areas that need further investigations are proposed. Corrosion behavioral properties, influence of micropores on fatigue and quasi-static tensile strength, and toughness characterization of laser welded aluminum alloys are insufficient in literature.
49 citations