The various welding parameters such as welding speed, voltage and gas flow rate were varied on HSLA steel and the effects of these parameters on weld bead geometry such as penetration, width & height have been studied. Mathematical equations have been developed using factorial technique. And the result of various effects are shown in tables. (Numerical Values). INTRODUCTION Wide variety of stee...

Arc sensors have been used in seam tracking and widely studied since the 80s and commercial arc sensing products for T and V shaped grooves have been developed. However, it is difficult to use these arc sensors in narrow gap welding because the arc stability and sensing accuracy are not satisfactory. Pulse gas melting arc welding (P-GMAW) has been successfully applied in narrow gap welding and ...

Amodel based on a double-ellipsoidal volumeheat source to simulate the gasmetal arcwelding (GMAW) heat input and a cylindrical volume heat source to simulate the laser beam heat input was developed to predict the temperature field and thermally induced residual stress in the hybrid laser–gas metal arc (GMA) welding process. Numerical simulation shows that higher residual stress is distributed i...

In gas metal arc welding (GMAW), the weld bead shape is an important factor that directly related to quality of welded joints. This study investigates effects process parameters, including speed (WS) and leading trailing wire feed rates (WFR), on shape, leg length penetration depth, in tandem GMAW aluminum 5083-O alloy. An asynchronous direct current–direct current pulse system a torch were des...

Numerous GMAW processes have appeared for one-pass welding of medium to high thickness. This concept originated in the 1980s with T.I.M.E. technique and 1990s 2000s saw emergence Rapid Arc, Melt Buried Arc techniques. These did not include any special control features, but rather parameter combinations improve bead geometry. A new interpretation factors that are critical achieving performance (...

In the magnetically controlled Plasma-GMAW welding process, composite arc forms a keyhole in workpiece to be welded. order explore effect of process parameters on coupling, weld pool and keyhole, behavior characteristics side information were collected using acquisition system high-speed camera during bead-on-plate welding. The image is processed by pseudo-color enhancement technology, molten a...

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 ...

This paper focusses on effect of flat wire electrode gas metal arc welding (FW-GMAW) inline during the process to improve quality weld bead. Since perimeter has enlarged, turbulence molten droplet characteristics is altered due electromagnetic force. To bring out, butt joint are proven with use electrode. The experimental results indicated that, and their orientations significantly factors bead...

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...