Abstract
The research on the effect of welding current strength on microstructure and hardness on CS32 type steel with electrode wire E6013 and E7016 has been carried out. This research uses CS 32 type concrete reinforced steel or low iron alloy steel treated with variations of electric current 90, 100, and 125 Ampere using reverse polarity DC SMAW welding with E7016 and E6013 electrode wire with a diameter of 3.2 mm and 20 cm long, and V with a 50 ° angle. The results of microstructural characterization showed that the metal base area in the form of ferrite (white) and pearlite (black) phase, and the HAZ region Widmanstatten phase (ferrite, pearlite and bainite) and the central weld area were bainite, ferrite fascia, and elastic phases with granules smooth. The results of this study indicate that the hardness value of welding CS32 type iron is reached at 271 HV, in the HAZ region of 100 Ampere electric current, the shape of the Widmanstatten phase structure (ferrite, pearlite, and bainite).
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