• DIVYESH B VISAVELIYA
• DHAVAL K PATEL

Plasma Arc Welding has advantages of less welding defect and excellent directional control and has been used in sheet metal Industry, space shuttles, airplanes, rockets, etc therefore the study of improve welding quality is a great technological interest. The main purpose of the study is investigation carried out on plasma arc welding by using powder as filler metal at weld joint and ensure feasibility of welding with good quality by optimizing process parameter and study mechanical and metallurgical properties of welds. To study the influence of each parameter to the response value, Analysis of Variance (ANOVA) technique has been used and optimized process parameter to achieved best possible weld quality. Experiments are performed with SS 304L as workpiece material and SS316L as powder consumable. Central Composite Design (CCD) experimental design used to perform experiment. process parameters such as plasma arc current, welding speed and gas flow are considered as input parameter were Radiography test, tensile strength, hardness and microstructure are considered as response valve to study the weld quality. Analysis of variance indicates the above process parameter has most Significant affecting on strength and hardness. Combine effect of gas flow rate and plasma arc current is observed in strength. At weld zone dendritic fine grain microstructure is observed. Optimized parameter gives Sound joining of 10mm thick SS304L could be accomplished by plasma arc welding with SS316L powder as filler meta by eliminating welding defects such spatter, distortion, crack and gas holes or porosity.

Powder plasma arc welding, joint design, Tensile strength, hardness, microstructure, optimization.

"Experimental Investigation of Welded Joint Prepared Using Powder Plasma Arc Welding Process on 304 Austenitic Stainless Steel", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.254-260, May-2019, Available :http://www.jetir.org/papers/JETIR1905P39.pdf

"Experimental Investigation of Welded Joint Prepared Using Powder Plasma Arc Welding Process on 304 Austenitic Stainless Steel", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp254-260, May-2019, Available at : http://www.jetir.org/papers/JETIR1905P39.pdf