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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TL;DR: In this paper, the electrical contact resistance involved in resistance spot welding of thin sheet steels is investigated, and a special test fixture has been fabricated that allows contact resistance at the electrode-to-sheet interface and the sheet-tosheet interface to be measured under typical welding pressures (e.g., 14 ksi) and from room temperature to elevated temperatures.
Abstract: This research is focused on characterizing electrical contact resistance involved in resistance spot welding of thin sheet steels. It is part of a larger study in which a mathematical simulation of the welding process is being developed. A special test fixture has been fabricated that allows contact resistance at the electrode-to-sheet interface and the sheet-to-sheet interface to be measured under typical welding pressures (e.g., 14 ksi) and from room temperature to elevated temperatures. Bare and galvanized mild and HSLA steels have been considered. The nature of the contact resistance is discussed, and experimental findings are presented
72 citations
TL;DR: In this article, a DCEN A-TIG welding was used to eliminate the welding porosity of 2219 aluminum alloy, which can reach the same mechanical performance index as VPTIG welding.
72 citations
TL;DR: In this paper, resistance welding of preconsolidated unidirectional graphite (AS4) rein forced polyetheretherketone (PEEK) composite laminates (I.C.2) is investigated experimentally.
Abstract: Resistance welding of preconsolidated unidirectional graphite (AS4) rein forced polyetheretherketone (PEEK) composite laminates (I.C.I. APC-2) is investigated experimentally. An apparatus is developed to conduct experiments to identify important process variables governing the efficiency of the welding process. Experiments were con ducted under displacement control and prescribed initial consolidation pressure. Heating elements consisted of a single ply of APC-2 with adjacent layers of neat film to minimize current leakage into the laminates to be welded. Temperature at the weld interface and consolidation pressure versus time were monitored and provided insight into the welding process. A strong correlation between the extent of welded surface area and process parameters such as power, energy and time in the melt were demonstrated. The quality and extent of the welded surface is quantified using ultrasonic nondestructive evaluation techniques. Experimental results indicate that superior welds exhibiting ...
72 citations
TL;DR: In this paper, laser welding of dissimilar combination of Titanium and stainless steel (304) has been carried out by varying the laser power, welding speed and position of the laser beam with respect to the joint centre.
72 citations
TL;DR: In this article, the interfacial conditions encountered in electrodes and sheets assemblies used in resistance spot welding process are characterized, and the quick wear of the electrodes surfaces is also measured, depending on the type of sheets (coated or none coated).
72 citations