The effect of pre-heating distance of shielded metal arc welding on the mechanical properties of AISI 1045 steel

Irza Sukmana; Egi Andika; Joy Rizki Pangestu Djuansjah; Tarkono

doi:10.37373/jttm.v3i2.312

Irza Sukmana Department of Mechanical Engineering, FT Universitas Lampung
Egi Andika Mechanical Engineering Department, Faculty of Engineering, Universitas Lampung
Joy Rizki Pangestu Djuansjah Mechanical Engineering Department, Imam Mohammad Ibn Saud Islamic University
Tarkono Mechanical Engineering Department, Faculty of Engineering, Universitas Lampung

DOI: https://doi.org/10.37373/jttm.v3i2.312

Keywords: AISI 1045, electrode, SMAW, pre-heating distance

Abstract

Welding is a method of joining metals by utilizing local heat to form a metallurgical bond between the metals. The most common welding is electric welding, including the Shielded Metal Arch Welding (SMAW). This type of welding uses a filler wire or electrode. To reduce weld cracks and cooling rates in the weld metal and heat affected zone (HAZ) area, it is necessary to carry out a pre-heating process. Pre-heating is the application of heat to the material to be welded using oxyacetylene welding or a gas torch. This study aims to determine the appropriate pre-heating distance for the welding process of AISI 1045 steel, classified as a type of medium carbon steel widely used in shafts, gears, and piston connecting rods in motor vehicles. The parameters used in this study were the pre-heating distances of 1.5cm, 3cm, and 4.5cm that were preheated at a temperature of 150°C, using LB-52U type electrodes with a diameter of 2mm.