The effect of electric current on SMAW welding result with E-7024 electrode in S45C medium carbon steel.

Several factors affect the results of welding strength, including welding position. Welding positions will give different results to the strength of the welding results. The type of welding electrode also greatly affects the characteristics of the welding result. For this reason, research will be conducted on SMAW welding for butt joints with current variations of 80 A, 90 A, 100A, 110 A and 120A. The current draw of 80 A is intended as the lowest current limit and 120 A as the highest current limit. The specimen used is a construction medium carbon steel plate (S45C) with an E-7024 electrode and a size of 100 x 60 x 10. The type of seam or welding connection used is V seam welding position 2F (Fillet). Each current variation uses 5 samples. Specimen testing using visual test and bending test. Based on the results of the research conducted, it can be concluded as follows: The use of a current of 120 A produces a relatively good redemption when compared to a current smaller than 120 A. The minimum current is 80 A, the arc flame is slightly inhibited so that when welding the electrode and object are melted work does not occur optimally. [ABSTRACT FROM AUTHOR]