Effect of Acetylene Gas and LPG Gas Variations in the Oxy-Acetylene Welding Process on the Mechanical Properties of ST37 Steel Welded Joints
DOI:
https://doi.org/10.47355/jaset.v6i1.122Keywords:
Oxy-Acetylene Welding (OAW), ST37 steel, Brass, Tensile testing, Impact testingAbstract
Welding is a metal joining method widely used in manufacturing, construction, and metal component repair. Oxy-Acetylene Welding (OAW) is still a widely used welding method. This study aims to determine the effect of varying fuel gases in the Oxy-Acetylene Welding (OAW) process on the mechanical properties of joints made of low-carbon steel ST37. The gases used in this study were acetylene and LPG as fuel, with brass filler metal used. Mechanical properties were tested using tensile and impact tests. These tests aimed to determine the tensile strength and toughness of the welded joints produced by the two fuel gas variations. The results showed that the use of acetylene gas produced higher tensile strength values than LPG gas. The highest ultimate tensile strength value with acetylene gas reached 356.25 MPa, while the highest value with LPG gas was 275.05 MPa. Furthermore, the impact test results showed that welded joints using acetylene gas had higher absorbed energy than those welded with LPG gas. It was concluded that the type of fuel gas affects the quality of the weld joint. The use of acetylene gas provides higher tensile strength and impact toughness than LPG gas when welding low-carbon steel.
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