Analisa Pengelasan Baja St 37 Dengan Memvariasikan Kuat Arus dan Pendinginan Terhadap Sifat Mekanik

Abstract

The aim of this study to determine the effect of electric arc welding results by varying the electric current and the cooling of the tensile strength and hardness on steel plates ST 37 with ASTM E 8. From the test results obtained the highest tensile strength of 52.21 kg / mm2 in strong currents 120 A with cooling water and the lowest tensile strength of 33.96 kg / mm2 in the strong currents of 120 A with oil cooling. As for testing the hardness HRB high of 107.33 on strong currents of 90 A with cooling water and low hardness of HRB 81 on the test material without getting treatment. ST 37 steel welded and cooling is done to change the tensile strength and hardness.