Topic
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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Papers
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TL;DR: In this paper, the development of hot wire TIG welding methods using pulsed current to heat filler wire was discussed, with a focus on pulse-heated hot wire welding processes.
Abstract: (2004). Development of hot wire TIG welding methods using pulsed current to heat filler wire – research on pulse heated hot wire TIG welding processes. Welding International: Vol. 18, No. 6, pp. 456-468.
56 citations
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TL;DR: In this paper, resistance heat generated by the electric Joule effect is used as an additional electrical energy source to assist ultrasonic welding process for joining non-ferrous metals, and the interfacial reaction between aluminum and copper is studied as a function of the current.
56 citations
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12 Feb 2009TL;DR: In this paper, the effects of laser powers and their densities on the weld penetration and the formation of sound welds were investigated in welding of Type 304 austenitic stainless steel, A5052 aluminum alloy or high strength steel plates with four laser beams of about 0.12 to 1 mm in focused spot diameter, and their welding phenomena were observed with high-speed video cameras and X-ray transmission real-time imaging system.
Abstract: Fiber lasers have been receiving considerable attention because of their advantages of high power, high beam quality and
high efficiency, and are expected as one of the desirable heat sources for high-speed and deep-penetration welding. In
our researches, therefore, the effects of laser powers and their densities on the weld penetration and the formation of
sound welds were investigated in welding of Type 304 austenitic stainless steel, A5052 aluminum alloy or high strength
steel plates with four laser beams of about 0.12 to 1 mm in focused spot diameter, and their welding phenomena were
observed with high-speed video cameras and X-ray transmission real-time imaging system. It was found that the laser
power density exerted a remarkable effect on the increase in weld penetration at higher welding speeds, but on the other
hand at low welding speeds deeper-penetration welds could be produced at higher power. Laser-induced plume behavior
and its effect on weld penetration, and the mechanisms of spattering, underfilling, porosity and humping were elucidated,
sound welds without welding defects could be produced under the improved welding conditions. In addition, importance
of the development of focusing optics and the removal of a plume during remote welding will be emphasized in terms of
the stable production of constant deep-penetration welds and the reduction in welding defects in high power laser
welding.
56 citations
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TL;DR: In this article, the effect of heat input on the mechanical properties of low-carbon steel was studied using two welding processes: Oxy-Acetylene Welding (OAW) and Shielded Metal Arc Welding(SMAW).
Abstract: In this work, the effect of heat input on the mechanical properties of low-carbon steel was studied using two welding processes: Oxy-Acetylene Welding (OAW) and Shielded Metal Arc Welding (SMAW). Two different edge preparations on a specific size, 10-mm thick low-carbon steel, with the following welding parameters: dual welding voltage of 100 V and 220 V, various welding currents at 100, 120, and 150 Amperes and different mild steel electrode gauges of 10 and 12 were investigated. The tensile strength, hardness and impact strength of the welded joint were carried out and it was discovered that the tensile strength and hardness reduce with the increase in heat input into the weld. However, the impact strength of the weldment increases with the increase in heat input. Besides it was also discovered that V-grooved edge preparation has better mechanical properties as compared with straight edge preparation under the same conditions. Microstructural examinations conducted revealed that the cooling rate in different media has significant effect on the microstructure of the weldment. Pearlite and ferrite were observed in the microstructure, but the proportion of ferrite to pearlite varied under different conditions.
56 citations
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TL;DR: In this article, the characteristics of electrode radial wear and axial wear were compared with between DP600 and uncoated steels, and the results showed that when welding DP600, more alloy products and electrode deformation were produced to make electrode diameter increase at earlier wear stage.
55 citations