Effect of Parameters Involved in Arc Welded Mild Steel Plates

Abstract

In this research, two similar mild steel plate of carbon content 0.16% was used to study the tensile strength by different m s electrodes diameter welded joint. The edge prepared plate of each 50 mm length, 10 mm thickness and 12 mm width used single V shape joint of angle 60° with 3 mm root face and 3 mm root opening (gap). Then it weld by alternating current (AC) arc welding with coated electrode and flat with down hand weld position used to make a single rectangular plate of 100 mm length, 10 mm thickness and 12 mm width, welding was done on the constant voltage at 80V and current varies for different electrodes diameter from 100-200 amp. The to the melting temperature. At the same time, the end of the metal electrode is melted and droplets of molten heat of the arc is produced with a high temperature of about 6000°C, a small part of the base metal is brought metal pass through the arc to the base metal, which is called globular transfer. This is because of conversion of electrical energy into heat energy. The result show on the basis of used current and voltage during welding process and weld penetration into the parent metal, that one welded rectangular plate joint gives similar or more strength as well as mechanical properties of parent metal.