Optimization of Spot Welding Process Parameters for CRCA Material using Taguchi Method
Manjunath Ramesh Rawal,  Dr. K. H. Inamdar
Resistance spot welding (RSW) process is a major sheet metal joining processes. Used in Automobile, Aerospace and Home appliances Industries. Because it has the advantage of high speed operation, high-production assembly lines and suitability for automation. In any car nearly about 3000 - 4000 spot weld joining is used, which shows the importance of resistance spot welding processes. In RSW the joining of sheet metal is combination of mechanical, electrical, thermal and metallurgical phenomenon. The strength of spot weld is depending on the parameters and their levels used for welding process. This paper presents an experimental investigation for the Tensile Shear (T-S) strength of spot weld by using Taguchi method. An experimental study is conducted under various levels of process parameters. Spot welds are carried out on Cold Rolled Close Annealed (CRCA) material. Welding current, Electrode force and weld time are selected as process parameters with three levels of each. Taguchi quality design concept of L9 orthogonal array has been used to determine S/N Ratio, Analysis of Variance (ANOVA). The level of importance of welding parameters for T-S strength is determined by ANOVA in Minitab 16 software. The confirmation test indicated that it is possible to increase tensile shear strength significantly.
Keywords- Resistance Spot Welding (RSW), Taguchi method, Cold Rolled Close Annealed (CRCA) material, ANOVA and Tensile Shear Strength.
Cite this Article
Manjunath Ramesh Rawal,  Dr. K. H. Inamdar,   "Optimization of Spot Welding Process Parameters for CRCA Material using Taguchi Method"
, International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.2, Issue 2, pp.2324-2330, June 2014, Available at :http://www.ijedr.org/papers/IJEDR1402166.pdf