"Evaluation of Weldability and Mechanical Properties in Resistance Spot Welding
The resistance spot welding equipment employed in this investigation was a standard foot operated rocker arm spot welding (Bay Kay) with transformer capacity (15 kVA) and single phase (220 volt).
Demir, "Effect of welding current on mechanical properties of galvanized chromided steel sheets in electrical resistance spot welding," Materials and Design, vol.
Gas metal arc welding (GMAW) is widespread for plastically deformed or closed parts of the automobile body and is frequently used where the part geometry restricts the application of resistance spot welding
(RSW) or when the design requires supplementary joint strength and stiffness.
Tenders are invited for advance resistance spot welding
Resistance spot welding (RSW) is widely used for joining sheet metals and is recognized as the most rapid and economic joining method, its unique advantages have kept it as one of the most productive and competitive joining technologies in automotive, aerospace, and other metal processing industries [1-4].
In this paper, a comprehensive review on monitoring resistance spot welding process or weld quality is presented.
The project aimed to define the following steps: production of bumped sheet, joining technologies (from laser welding to ultrasonic soldering to resistance spot welding
), deformation controls and related sensors, adaptation of rolling technology.
This new spot welding technique has been successfully applied in the automotive industry due to its high product quality, over 90% energy saving and 40% equipment cost saving versus the traditional resistance spot welding (RSW) .
The tensile shear failure load of the optimal FSSW joint is 6438 N, and it is almost equal to that of similar joints produced by resistance spot welding (6459 N) and lower than that of riveted joints (8514 N).
GM s new resistance spot welding process uses a patented multi-ring domed electrode that does what smooth electrodes are unreliable at doing welding aluminum to aluminum.
Historically, automakers have used self-piercing rivets to join aluminum body parts, because of variability in production with conventional resistance spot welding. However, rivets add cost and riveting guns have a limited range of joint configurations.