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 article, the combined effects of tool rotation and welding travel speed on the macrostructure and defect formation of friction stir lap welding of AA5456 was investigated, and the results showed that hooking height decreased as the welding speed increased while kissing-bond was formed at higher welding speeds.
43 citations
01 Jul 1997-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this paper, the effect of sliding in breaking down contact resistance of sheet with an insulating surface film has been investigated using pre-treated (coated) and abraded aluminium alloy strip.
Abstract: Measurements of contact resistance, related to resistance spot welding, were made using pre-treated (coated) and abraded aluminium alloy strip. With conventional domed electrodes, the contact resistance was much larger at the sheet-to-sheet (faying) contact than at the electrode-sheet contact. The effect is believed to be associated with the role of sliding in breaking down contact resistance of sheet with an insulating surface film. When the coating was removed the difference between faying surface and electrode-sheet contact was much smaller. Macroscopic shear stresses are developed by electrode-sheet contact whereas no shear stresses are present at the faying surface. The hypothesis is supported by experiments made with asymmetrical electrode pairs which give rise to varying shear stresses in faying surface contact. Some implications for the control of spot welding of different aluminium surfaces are discussed.
43 citations
01 Jan 1999
TL;DR: In this paper, a model switch that simulated an automotive relay was used to measure the contact bounce and weld strength of a hard silver contact alloy for dynamic contact welding for a hard contact alloy, and the weld strength was highest for single bounces of very short duration and contact gap.
Abstract: Mechanical parameters were correlated with dynamic contact welding for a hard silver contact alloy The study was conducted with a model switch that simulated an automotive relay The switching tests conducted at 13 VDC for rigid and flexible blades correlated contact bounce to weld strength The weld strength was shown to be highest for single bounces of very short duration and contact gap Flexible contact springs were shown to create weak welds by mechanical adhesion
43 citations
TL;DR: In this paper, the effect of weld time and the influence of different weld atmospheres in the resistance spot weldability of AISI304 grade stainless steel deformed in tension by 5, 10, or 20 was analyzed.
43 citations
TL;DR: In this paper, the authors investigated the appropriateness of magnetic pulse welding conditions for AA6060T6 tubular assembly and found that the voltage does not strongly affect the weld quality for a low gap.
43 citations