Results 191 to 200 of about 7,511 (249)

Control of pulsed gas metal arc welding

International Journal of Modelling, Identification and Control, 2006
This paper presents a control system for manual pulsed Gas Metal Arc Welding (GMAW). This system consists of a current controller, which makes it possible to shape the current during welding, and two important components, which are the key issues discussed in this paper. These components include an arc length controller and a metal transfer controller.
openaire   +2 more sources

Study of the arc voltage in gas metal arc welding

Journal of Physics D: Applied Physics, 2018
Abstract In this paper, the voltage drop in pulsed gas metal arc welding (GMAW) is studied, focussing on the contributions of the different sections of wire and arc along the current path and their dependence on arc length and current.
G Zhang, G Goett, R Kozakov, D Uhrlandt, U Reisgen, K Willms, R Sharma, S Mann, P Lozano   +8 more
openaire   +1 more source

Gas-Metal Arc Welding

1993
Abstract Gas-metal arc welding (GMAW) is an arc welding process that joins metals together by heating them with an electric arc that is established between a consumable electrode (wire) and a workpiece. This article discusses the advantages and limitations, operating principle, metal transfer mechanisms, and process variables of the GMAW
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Droplet Observer for Pulsed Gas Metal Arc Welding

2018 European Control Conference (ECC), 2018
In this paper an observer for detecting droplet detachment/no-detachment for a pulsed gas metal arc welding (GMAW) is developed. The observer is based on simple calculations made on the measured welding apparatus voltage. Two phenomena are used in the observer, one is the shape of the voltage in a limited time interval and the other is detection of a ...
Kirsten Mølgaard Nielsen, Tom Søndergaard Pedersen, Steffan K. Ovedahl   +2 more
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Control of gas metal arc welding by an extended DMC

2012 IEEE International Conference on Control Applications, 2012
Efficient control of gas metal arc welding process enables us to have high quality products in consequence of achieving high quality weld. In this paper, an extended dynamic matrix controller is designed and applied on the gas metal arc welding process, which is considered as a nonlinear multi-inputs multi-outputs system.
Hossein Sartipizadeh, Mohammad Haeri
openaire   +1 more source

Metal transfer measurements in gas metal arc welding

Journal of Physics D: Applied Physics, 2001
The present work reports results obtained using combined laser shadowing and cross correlation techniques to investigate the metal transfer process. Experimental results of the droplet size and velocity of 0.9 mm and 1.2 mm wires from the globular region to the spray transfer region are presented.
Q Lin, X Li, S W Simpson
openaire   +1 more source

A theoretical model for gas metal arc welding and gas tungsten arc welding. I.

Journal of Applied Physics, 1998
A recently developed theory for predicting arc and electrode properties in gas metal arc welding (GMAW) has been generalized to include arc–electrode interfaces, variation of surface tension pressure with temperature, Marangoni forces and handling of weld pool development in stationary gas tungsten arc welding (GTAW).
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Advanced gas metal arc welding processes

The International Journal of Advanced Manufacturing Technology, 2012
There is an increased requirement in the automotive, food and medical equipment industries to weld heat-sensitive materials, such as thin sheets, coated thin plates, stainless steel, aluminium and mixed joints. Nevertheless, relevant innovations in arc welding are not widely known and seldom used to their maximum potential. In the area of gas metal arc
Martikainen Jukka, Kah Paul, Suoranta Raimo   +2 more
openaire   +1 more source

Multifractal analysis for gas metal arc welding

The International Journal of Advanced Manufacturing Technology, 2017
The gas metal arc welding (GMAW) is a complicated chaotic dynamic process and its arc electrical signals have the characteristics of both chaos and fractals. The multifractal can accurately depict the geometric characteristics and local scale behaviors of time series signals.
Yong Huang, Kehong Wang, Jimi Fang, Xiaoxiao Zhou   +3 more
openaire   +1 more source

Circuit simulation for gas metal arc welding

Science and Technology of Welding and Joining, 1999
An electrical circuit was developed to model the behaviour of gas metal arc welding. The model incorporates results from a one-dimensional free burning arc model to describe the arc and a second order differential equation to describe one-dimensional energy conservation in the welding anode.
P. Xu, M. Rados, S.W. Simpson
openaire   +1 more source