Article history: Received 12 May 2008 Received in revised form 25 September 2008 Available online 29 November 2008 0017-9310/$ see front matter 2008 Elsevier Ltd. A doi:10.1016/j.ijheatmasstransfer.2008.09.018 * Corresponding author. Fax: +1 203 576 4765. E-mail address: [email protected] (J. Hu). An integrated comprehensive 3D model has been developed to study the transport phenomena in gas ...

Recently, deep learning has been applied to various welding techniques, such as laser welding, gas metal arc (GMAW), and resistance spot research on automation quality prediction is being conducted. Even for GMAW, many researchers have attempted predict through X-ray, current, voltage measurements. If judgment in real time not necessary, it most effective judge the of a welded part using an ext...

This paper aims at the development of an advanced control technology for pulsed gas metal arc welding (GMAW) of titanium or other materials which require a highly stable metal transfer process. It is known that conventional pulsed GMAW achieves stable and repeatable spray transfer by using correct pulse parameters. Because the optimal pulse parameters depend on welding parameters such as wire f...

The oscillating phenomenon of the weld pool has a direct physical correspondence with its penetration state, which broad application prospects in monitoring states. This article studied characteristics short-circuiting gas metal arc welding (S-GMAW) different states based on high-speed photography system. results show that form liquid bridge electric explosion impact is “surface impact” S-GMAW....

The symmetrical nature in the case of wall fabrication by wire arc additive manufacturing (WAAM) has been observed literature, but it not studied as a source knowledge. This paper focuses on comparative study three drop transfer methods employing Gas Metal Arc Welding (GMAW) technology, one most reported for manufacture aluminum alloys. modes are well-known pulsed GMAW, cold arc, and newer AC. ...

Gas tungsten arc welding (GTAW) or Tungsten inert gas welding (TIG) is one of the widely used techniques for joining ferrous and non-ferrous metal.Gas tungsten arc welding process,consist of non-consumable tungsten electrode which is used to provide the arc for welding. During the welding cycle a shield of inert gas expels the air from the welding area and prevents oxidation of the electrode, w...

A method has been proposed to pulsate current in gas metal arc welding (GMAW) to achieve a specific type of desirable and repeatable metal transfer mode, i.e., one drop per pulse (ODPP) mode. This method uses a peak current lower than the transition current to prevent accidental detachment and takes advantage of the downward momentum of the droplet oscillation to enhance the detachment. A numer...

This study aims to propose a new diagnosis technique based on the Park’s vector and polar coordinates of electric currents for detection location open-circuit faults (OC) at level two rectifiers connected grid network feed Gas Metal Arc Welding process (GMAW). allows early faulty switches (Thyristors) overcome negative effect welding current, voltage, droplet diameter. For that, reconfigurable ...