Effects of Welding Current on the Mechanical Properties of Gas Tungsten Arc Welding Welded ST 37 Plates using Cannibal Consumable Filler Albert Daniel Saragih, Riswanda, Prasetyo, Syahrul Dwi Nugraha and TB. Moch mario Al-Qashtalani
Politeknik Negeri Bandung
Abstract
In this paper, the macrostructure and mechanical properties of low carbon steel with itself filler by using the GTAW process have been investigated. The low carbon steel (ST 37) plates with dimensions of 300 x 250 x 3 mm was used for welding and 2.5 mm of thickness for the filler. For welding parameters, three distinct current of 80, 90, and 100 were observed over the welded specimens. To explore the optimum welding current, both tensile and bending tests were carried out. Both the visual and the macrograph showed that the weld seam produced on both the face and root is more stable, compared to using other currents. Destructive tests have suggested that welding current was 90 A is better for the GTAW process with itself material as a filler
