Impact of Weld Parameters for Indirect Spot Welding and its Behavior for Sheet Metal Fabrication Industries

Volume 9 Issue 2 February - April 2019

Research Paper

Impact of Weld Parameters for Indirect Spot Welding and its Behavior for Sheet Metal Fabrication Industries

Kancha Sammaiah*, D. V. Sreekanth **, Busi Ashok Kumar***

* Professor, Department of Mechanical Engineering, St.Martin’s Engineering College, Secunderabad, Telangana, India.

** Professor & HOD, Department of Mechanical Engineering, St.Martin’s Engineering College, Secunderabad, Telangana, India.

*** Assistant Professor, Department of Mechanical Engineering St.Martin’s Engineering College, Secunderabad, Telangana, India.

Sammaiah, K., Sreekanth, D. V., and Kumar, B. A. (2019). Impact of Weld Parameters for Indirect Spot Welding and its Behavior for Sheet Metal Fabrication Industries.i-manager’s Journal on Mechanical Engineering, 9(2), 35-42. https://doi.org/10.26634/jme.9.2.15581

Abstract

Resistance welding principle depending on heat developed at the interface due to current supplied through the electrode to the metal parts being joined. It depends upon the electric current flow, supply time and load transmitted to the parts to be joined. Indirect spot welding or one side welding method force the joint to be welded like normal conventional process of spot welding; the current flow direction is deviated by adding series of electrodes through the interface and ground the flow direction to the bottom electrode there by heating effect will be reduced in the bottom sheet and at the same time ensurs formation of nugget. For achieving is principle a special unit is designed and fabricated and attached to the bottom electrode of Spot welding machine. This requirement of both transmitting of current and weld force to realize minimum deformation on one of the sheets. Trials were conducted 23 factorial designs is met using “statistical” design approach from the of experiments. Weld parameters were considered for each factor with two level variation and the tension shear load was taken as response criteria. Indirect resistance welding trials were conducted and regression equations were obtained. The effect of parameters on tension shear breaking load was analyzed.