Recently, open-type push-pull ventilation systems have been widely employed as effective substitutes for the conventional local exhaust ventilation system, and have prevailed at many welding workshops in Japan. In this study, the effect of the uniform velocity on carbon dioxide (CO2) shielding arc welding was examined by laboratory experiments. The ventilation system examined in the experiments...

This paper presents an evaluation of an infrared sensor for monitoring the welding pool temperature in a Gas Tungsten Arc Welding (GTAW) process. The purpose of the study is to develop a real time system control. It is known that the arc welding pool temperature is related to the weld penetration depth; therefore, by monitoring the temperature, the arc pool temperature and penetration depth are...

This investigation aims to explore determinants of exposure to particle size-specific welding fume. Area sampling of ultrafine particles (UFP) was performed at 33 worksites in parallel with the collection of respirable particles. Personal sampling of respirable and inhalable particles was carried out in the breathing zone of 241 welders. Median mass concentrations were 2.48 mg m(-3) for inhalab...

J. Cárcel-Carrasco; M. Pascual; M. Pérez-Puig; F. Segovia. ITM-Universitat Politècnica de València (Spain). Camino de vera s/n, 46022 Valencia (Spain). Corresponding author, Email: [email protected] This work compares the weldability of ductile iron when: (I) a root weld is applied with a tungsten inert gas (TIG) process using an Inconel 625 source rod and filler welds are subsequently applie...

Two welding methods of FCAW (Flux-cored arc welding) + FCAW, and GTAW (Gas tungsten were compared to identify effective routes for STS 316L/A516-70N clad stainless steel. Since the speed method is slower than that method, amount heat input large, size heat-affected zone formed larger, angular deformation also large. The microstructure specimens investigated by computational simulation, results ...

This study investigates the relationship between four welding input parameters (voltage, current, heat input, and speed) ultimate tensile strength (UTS) yield (YS) of a welded joint. The work joined two super-duplex stainless-steel pipes outside diameter 0.630 inches (16.002 mm) thickness 0.065 (1.651 mm), using Gas Tungsten Arc Welding. Factorial design was used to ascertain main interaction e...

Industrial technology programs around the country must be sensitive to the demands of manufacturing and industry as they continue to replace “vocational” curriculum with high-tech alternatives. This article examines whether or not teaching oxyacetylene welding in the industrial technology classroom is required to learn arc welding processes. The results of this study suggests that there appears...

By lowering the copper with a tiny amount of Mg, AA2519 emerged as an upgrade version AA2219 Al-alloy. The modification is intended to improve ballistic resistance and strength weight ratio. Despite its improved properties, it was facing some problems due welding. Formation oxide layers, solidification cracking, porosity are significant raised during Given above, present work planned investigat...

This paper develops a vision-based neuro-fuzzy system to control the weld joint penetration in Gas Tungsten Arc Welding (GTAW) of thin sheets. To this end, a camera equipped with a specially designed composite light-filter is used to observe the weld pool from the topside of the workpiece so that comparatively distinct images of the weld pool are obtained. As the Backside weld Width (BW) reflec...