PENGARUH KUAT ARUS TERHADAP KEKUATAN TARIK PADA PROSES PENGELASAN BAJA SM 400 B MENGGUNAKAN PROSES PENGELASAN SMAW DI PT. BARATA INDONESIA (Persero) DIVISI SUMBER DAYA AIR - TEGAL

Abstract

PT. Barata Indonesia (Persero) Tegal Water Resources Division is one of the hydromechanical workshops that specializes in hydromechanical and supports the fabrication and installation of the Water Resources Division. This workshop focuses on mechanical work for water structures such as penstock pipes, valves and trashracks in dams, sluice gates in dams and flood control pumps. This research is entitled "Effect of Strong Current on Tensile Strength in SM 400 B Steel Welding Process Using SMAW Welding Process at PT Barata Indonesia (Persero) Water Resources Division-Tegal". The purpose of this study was to determine the effect of current strength on tensile strength and to determine welding defects caused by currents that are not in accordance with the welding procedure specification (WPS). The test method is first to look for supporting literature, next is to collect field data, then analyze the data. The welding is carried out using the SMAW method with the material in the form of SM 400 B steel, and electrodes E 7016 with a diameter of 3.2. Based on the research that has been done, it is known that the greater the current, the greater the value of the tensile strength, and vice versa, the smaller Journal Of Metallurgical Engineering And Processing Technology, Vol. 2, N0. 2, February 2022, pp.39-46 P-ISSN: 2723-6854, E-ISSN: 2798-1037 40 the current, the smaller the value of the tensile strength. In addition, the current strength must match the WPS. If the welding current does not match the WPS, a welding defect will occur. Welding currents that are too low will cause welding defects in the form of undercuts, welding spatter defects,while welding currents that are too high will cause welding defects in the form of porosity, incomplete penetration. Keyword: Welding, Current Strength, Tensile Strength, Defect.