In this project we discussed the characteristics and performance of electrodes on the MS metal in arc welding method. In this two different electrodes E6010 and E7018 welding parameters investigated. After that the dye penetration test conducted for knowing the defects due to electrodes and welding ,again the welded specimens were cut and machined to standard configurations for tensile test. The results showed that selecting different welding electrodes had a remarkable effect on the mechanical properties such as the ultimate tensile strength, hardness, elongation percentage, and yield strength of the welded specimens. The increment in the electrical current for each electrode in the welding processes led to increase in yield strength and tensile strength. The initial increase in tensile strength and yield strengths were observed. This behaviour was attributed to the fact that different welding electrodes and increased the required electrical current to melting for the welding electrode, increased the electrical current led to increased heat input on heat affected zone (HAZ), then the observed change mechanical properties which could create area for defect. The welding processes and tensile test at a room temperature was performed.
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