Gas Metal Arc Welding (GMAW) process was analyzed by combining a finite element thermomechanical model for temperature and stress with solidification model. Model prediction was compared with experimental data in order to validate the model. The effects of welding process parameters on these welding fields were analyzed and reported. The effort to correlate the residual stress and solidificatio...

We investigated relationships between occupational exposure to gas and arc welding fumes and the risk of lung cancer among workers exposed to these agents throughout the spectrum of industries. Two population-based case-control studies were conducted in Montreal. Study I (1979-1986) included 857 cases and 1066 controls, and Study II (1996-2001) comprised 736 cases and 894 controls. Detailed job...

An adaptive control based on fuzzy logic has been implemented for Gas Tungsten Arc Welding (GTAW). This adaptive controller eliminates the problems frequently experienced with traditional Automatic Voltage Control (AVC) systems, which do not adequately perform for all operational conditions because of the non-linear relationship between the arc voltage, current and arc length. This paper examin...

This study observed the effect of filler metal type on mechanical properties NAB (NiAl-bronze) material fabricated using wire arc additive manufacturing (WAAM) technology. The selection is must consider field condition, required by customers, and economics. analyzed bead shape for representative two kind types use to maintenance a two-dimensional bulk material. cold transfer (CMT) mode gas weld...

Abstract Gas metal arc welding (GMAW) process is one of the most important in industry, so different efforts have been made to anticipate parameters convert this into a stable capable joining parts with minimum human interference. In sense, controlling essential for automated applications because properties such as weld mechanical strength are defined by composition, microstructure, and bead ge...

This paper presents the results of a study aimed at establishing the temperature distribution during the welding of magnesium alloy sheets by Pulsed Current Gas Tungsten Arc Welding (PCGTAW) and Constant Current Gas Tungsten Arc Welding (CCGTAW) processes. Pulsing of the GTAW welding current influences the dimensions and solidification rate of the fused zone, it also reduces the weld pool volum...

Abstract Residual stresses and strains, distortions, heat-affected zone (HAZ), grain size changes hardness variation during gas metal arc welding (GMAW), are fundamental aspects to study control processes. For this reason, numerical simulations of the processes represent more frequently used tool better analyse several characterizing joining process with aim reduce lead time production costs. I...

A plasma arc welding (PAW)-tungsten inert gas (TIG) hybrid welding process is proposed to weld pure nickel. In PAW-TIG welding, the arc of the PAW was first to be ignited, then TIG was ignited, while in PAW welding, only the PAW arc was launched. This paper investigated the effect of different welding processes on electrochemical and corrosion performance of between a pure nickel joint and a ba...