Integrated model for assessment of electromagnetic force field due to arc welding

Dahiwale, N B and Kapil, A and Sharma, A (2015) Integrated model for assessment of electromagnetic force field due to arc welding. Science and Technology of Welding and Joining, 20 (7). pp. 563-570. ISSN 1362-1718

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Abstract

Computation of the electromagnetic force over a wide range of consumable arc welding parameters is difficult with available models because of the need for experimentally evaluated electrode extension for every individual set of parameters. This becomes more complicated in case of submerged are welding, because the welding arc remains buried beneath flux. This study presents a new approach of integrating mechanistic model of electrode extension with the computational model of electromagnetic force, wherein the apparent electrode extension is obtained by solving the electrode melting rate equation. The proposed approach is demonstrated through a case on submerged arc welding. The effect of current, voltage, electrode diameter, contact tip to workpiece distance and polarity, on the electromagnetic force, is determined and analysed. This investigation shows that detrimental effects of welding electromagnetic force can be restricted without compromising productivity because after initial rapid increase, no considerable change in melting rate is caused by the force under consideration.

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IITH Creators:
IITH CreatorsORCiD
Sharma, AUNSPECIFIED
Item Type: Article
Uncontrolled Keywords: Electromagnetic force field, Arc welding, Electrode extension model, Computational model
Subjects: Others > Engineering technology
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Divisions: Department of Mechanical & Aerospace Engineering
Depositing User: Team Library
Date Deposited: 11 Aug 2015 10:10
Last Modified: 11 Aug 2015 10:10
URI: http://raiith.iith.ac.in/id/eprint/1844
Publisher URL: http://dx.doi.org/10.1179/1362171815Y.0000000039
OA policy: http://www.sherpa.ac.uk/romeo/issn/1362-1718/
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