INFLUENCE OF WELDING SPEED AND GROOVE ANGLE ON STRENGTH OF V-GROOVE BUTT WELD JOINT USING SMAW

Welding is a fabrication process that join materials, usually metals are thermoplastic. by using high heat to melt the parts together and allowing them to cool, causing fusion. Welding is a distinct from lower temperature techniques such as brazing and soldering, which do not melt the base metal. Arc welding is a type of welding process using an electric are to create heat to melt and join metals. A power supply creates an electric are between a consumable or non-consumable electrode and base material using either direct arc or alternating currents. To study the weld properties on a butt joint by using are welding process. First, we took mild steel. By using the electrode E6013 we have filled V groove. The welded workpiece is settled at room temperature. LPT test is performed on the workpiece by using penetrants to check the internal defects which are formed on the welded material. We have observed slag. porosity defects during LPT test. Later hardness test is performed on the workpiece at 5 different positions like Heat Effected Zone, Weld zone, Base Metal. The maximum hardness observed on weld zone by using gas cutting. the workpiece is cut into required shape for tensile test. Tensile test is performed on UTM. by gradually increasing the load on workpiece, the workpiece breaks at a load of 55 KN which is known as breaking point.