Analisis Pengaruh Variasi Arus Pengelasan Kombinasi SMAW dan FCAW Double V Groove terhadap Kekuatan Tarik, Impact dan Struktur Mikro Daerah Weld Metal Baja ASTM A36

Akbar, Rizky
Awali, Jatmoko
Stasiyanur, Flora
Lubis, Muthia Putri Darsini

Specta Journal of Technology
Vol. 7 No. 1 (2023): SPECTA Journal of Technology

This research uses shielded metal arc welding (SMAW) welding method combined with flux core art welding (FCAW) welding method using ASTM A36 10 mm steel material and using double V seam. Then the electrode used in this study is for SMAW E7018 welding. , while for FCAW E71T1 welding. The current variations used are SMAW 60A, 75A, 90A and FCAW 190A, 205A, 220A. The purpose of this research is to determine the optimal current that produces the highest tensile and impact strength and differences in microstructure in the weld metal area. From the results of this study, the highest tensile and impact strengths were at 90A SMAW and 220A FCAW with a tensile strength of 526.96 N/mm and an impact strength of 1.2044 J/mm2. Then the microstructure formed is Grain Boundry Ferrite (GBF), Pearlite (P), Arcicular Ferrite (AF), Ferrite (F). Where the percentage of SMAW weld metal is 72.1% Ferrite and 27.9% Pearlite, while in FCAW weld metal it is 75.63% Ferrite and 24.37% Pearlite.