Pengaruh Variasi Arus Pengelasan Shielded Metal Arc Welding Terhadap Kekuatan Tarik Baja St-37

Abstract

In metal manufacturing, welding and casting became an important focus in its development. Going to industrial era 5.0, efficiency in welding and casting is very important. Welding is one of the simplest methods of joining metals to form the desired machining structure. Shielded Metal Arc Welding has several variables that can affect the welding results. Current strength has an important influence on the quality of the weld. So research on the effect of current strength on the results of welded joints on its mechanical strength is needed. In this study, the mechanical strength tested is the tensile strength and the current susceptibility used is the commonly used 80 to 140 Ampere using ST-37 Steel. The highest maximum loading value occurs in the sample with a current of 80A. However, the highest fracture and yield loads occurred in the sample with a current of 140A. All types of the highest tension occur in the sample with a current using a current of 140A which has the potential to be able to withstand high tensile strength.

Analysis of the influence of groove welds of oxy-acetylene welding joints on tensile strength and microstructure on steel ST 37

“…Welding using Oxy-Acetylene gas as a heat source is a method of welding that is widely used in the field. This is because OAW is relatively cheaper, and can be done anywhere (does not require an electric current as in welding using electrodes or electric current) [1,6]. Oxy-acetylene welding is a manual welding process, in which the surfaces to be joined are heated until they melt by the flame of acetylene gas (ie burning C2H2 with O2, with or without filler metal, where the joining process is without pressure.…”

“…The OAW welding process can affect and change the mechanical properties of low-carbon steel ST 37 [1,6,8,11]. Many factors affect the quality of the OAW weld, one of which is the distance between the material gap being welded.…”

“…The shape of the groove weld used in OAW welded joints in some cases also greatly determines the mechanical strength of the welded joint [4,5,7]. In some cases of OAW welding, the use of filler types also greatly determines the quality of the welded joint [6,9,10].…”