Tensile Strength of Welded Buttly Joints by Different Types of Welding

Abstract

In this study, an experimental method for the selection of optimal welding for joining metals there are
several methods which they are used for joining metals, that it includes using welding brazing, Metal
Inert Gas (MIG) Welding and Gas Metal Arc Welding is an arc welding process, in which the weld is
shielded by an external gas (Argon, helium, CO2, argon + Oxygen) or other gas mixtures is one of the
widely used techniques for joining ferrous metal. (MIG) welding process offers several advantages
like joining of unlike metals, low heat effected zone, absence of slag etc, Thus the welding condition
has to be selected carefully. By studies, the quality of welded joints depend upon three important
factors are: type of power supply (DCSP, DCRP or ACHF), type of inert gas used for shielding and
type of material the welded joint. In this paper deals with the investigation of Tensile strength of
welded buttly joints, by three types of welding (Brazing welding), (MIG welding) and (Steel rod
welding). Where it was selected the steel for preparing the specimens and it was tested the tensile
strength of the welded joints where tested by a universal tensile testing machine in laboratory and the
results were evaluated, which it confirmed importance of tensile testing that have to determine
whether butt welded joints fulfill all of the required standards before use and also it should be select
the type of weld the suitable of the type of metal.