مقاله جوشکاری با عنوان : Parametric Studies and Finite Element Analysis of Welded Steel in Resistance Spot Welding Process

Kishore, N.1*, Sreenu, S.2, Ramachandran, N.3, Allesu, K.

چکیده :

Resistance Spot Welding (RSW) is a widely used joining process for fabricating sheet assemblies in the automotive,
marine and aerospace industries. Modern vehicles contain 2000-5000 spot welded points. The main requirements of
these automobile parts are corrosion resistance of chassis, the high strength values of sheets used, the stiffness of
welded joints when exposed to an external force and the ability to absorb impacts, along with low cost and comfort.
In RSW, electrodes travel on a predetermined path and make contact with the sheets at selected weld points to apply
force. Electric current is then turned on and flows through the sheets clamped between the electrodes. Due to the
contact resistance to current flow, the temperature rises from resistance heating. When the temperature reaches the
desired fusing temperature, a molten nugget is formed, the current is shut off after a designated time to allow the
nugget to cool down and solidification of the weld spot occurs under pressure. It is proposed to study the effect of
various parameters on nugget dimensions and strength of the weld joint in RSW and concentrating on different
material and thicknesses to get good weld joint at low cost and compared with analytical part done in Ansys.