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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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Journal ArticleDOI
TL;DR: In this paper, the influence of ultrasonic vibration on the formation, microstructure and mechanical properties of butt welded 2024Al-T4 joints was investigated, and the underlying mechanism of UVeFSW by experimental methods.
Abstract: Ultrasonic vibration enhanced friction stir welding (UVeFSW) is a new variant of friction stir welding (FSW) in which a sonotrode transmits ultrasonic energy directly into the localised area of the workpiece near and ahead of the rotating tool. This study investigated the influence of ultrasonic vibration on the formation, microstructure and mechanical properties of butt welded 2024Al-T4 joints, and attempted to unveil the underlying mechanism of UVeFSW by experimental methods. Morphology inspection, X-ray detection and metallographic inspection of the welds revealed that ultrasonic vibration can improve the weld formation at higher welding speeds. The stir zone in the UVeFSW broadened, while the grains in the heat affected zone had no obvious growth contrary to that in the base metal. Results of the mechanical tests indicated that the tensile strength and elongation of joints, and the microhardness value in the stir zone increased at the same welding parameters.

78 citations

Journal ArticleDOI
TL;DR: In this paper, the authors proposed an Advanced Polymer-Metal Hybrid Structures (AMPHS) for the Solid State Joining Processes (SSPP) at the Max-Planck-St. 1, D-21502 Geesthacht.
Abstract: Helmholtz-Zentrum Geesthacht, Institute of Materials Research, Materials Mechanics, Solid State Joining Processes, Max-Planck-St. 1, D-21502 Geesthacht, Germany Helmholtz-Zentrum Geesthacht, Institute of Materials Research, Materials Mechanics, Advanced Polymer-Metal Hybrid Structures, Max-Planck-St. 1, D-21502 Geesthacht, Germany Federal University of Sao Carlos (UFSCar), Departamento de Engenharia de Materials (DEMa), Rodovia Washington Luiz km 235, 13565-905 São Carlos-SP, Brazil

78 citations

Journal ArticleDOI
TL;DR: In this article, the thermal effects of friction welding of two dissimilar materials, two rods are welded together by holding one of them still while rotating the other under the influence of an axial load which creates frictional heat in the interface.

78 citations

Journal ArticleDOI
TL;DR: In this article, the authors investigated the effects of activating fluxes and welding parameter to the penetration and depth-to-width ratio (DWR) of weld bead of Inconel 718 alloy welds in the tungsten inert gas (TIG) welding process.
Abstract: The purpose of this work is to investigate the effects of activating fluxes and welding parameter to the penetration and depth-to-width ratio (DWR) of weld bead of Inconel 718 alloy welds in the tungsten inert gas (TIG) welding process. In the activating flux with TIG (A-TIG) welding process, the single-component fluxes used in the initial experiment were SiO2, NiO, MoO3, Cr2O3, TiO2, MnO2, ZnO, and MoS2. Based on the higher DWR of weld bead, four fluxes were selected to create six new mixtures using 50% of each original flux. The A-TIG weldment coated 50% SiO2 + 50% MoO3 flux and 75° of electrode tip angle were provided with better welding performance. In addition, the experimental procedure of flux-bounded TIG (FB-TIG) welding with the same welding conditions and flux produced full penetration of weld bead on a 6.35 mm thickness of Inconel 718 alloy plate with single pass weld.

78 citations

Journal ArticleDOI
TL;DR: In this paper, the influence of different welding parameters on the weld strength and to obtain the optimum parameters was investigated, and a suitable experimental design based on Taguchi's robust design methodology was designed and executed for conducting trials.
Abstract: Ultrasonic welding is a solid-state joining process that produces joints by the application of high-frequency vibratory energy in the work pieces held together under pressure without melting. In electronic and automotive applications, copper wires are connected to the equipment (alternator/rectifier) by a solid state joining process. For such an application ultrasonic metal welding is useful. The dominant problem faced by industry dealing with ultrasonic metal welding process is the poor weld quality and strength of the weld due to improper selection of weld parameters. In this work welding parameters like welding pressure, weld time and amplitude of the vibration are considered while producing ultrasonically welded joints of copper whose thickness is 0.2 mm. If other modes of joining are used, this size being very small, it may damage the weld. A suitable experimental design based on Taguchi’s robust design methodology was designed and executed for conducting trials. The analysis of variance (ANOVA) and signal to noise ratio analyses are employed to investigate the influence of different welding parameters on the weld strength and to obtain the optimum parameters.

78 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023106
2022247
202168
2020162
2019184
2018245