Arc stability and its impact on weld properties and microstructure in anti-phase synchronised synergic-pulsed twin-wire gas metal arc welding

Moinuddin, S Q and Sharma, Abhay (2015) Arc stability and its impact on weld properties and microstructure in anti-phase synchronised synergic-pulsed twin-wire gas metal arc welding. Materials and Design, 67. pp. 293-302. ISSN 0261-3069

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Abstract

The paper conveys new observations on arc stability in anti-phase synchronised synergic-pulsed twin-wire gas metal arc welding. Unlike the conventional understanding that arcs mutually affect each other, leading to arc instability, uneven weld bead, and excess spatter loss, etc., the present investigation suggests that dissimilar currents at lead and trail wires induce stability in the welding arcs, resulting in a considerable influence on weld microstructures, hardness, heat affected zone, and weld penetration-width ratio. The separation of arcs in time by anti-synchronisation and a synergic pulse can be better utilised to control arc instability when the current at the lead wire is more than that of the trail wire.

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IITH Creators:

IITH Creators	ORCiD
Sharma, Abhay	UNSPECIFIED

Item Type:

Article

Uncontrolled Keywords:

Electric arc welding; Electric welding; Gas metal arc welding; Gas welding; Heat affected zone; Microstructure; Stability; Synchronization; Welding; Welds; Wire Arc stability; Lead wire; Weld bead; Weld microstructures; Weld penetrations; Weld properties; Welding arc; Width ratio

Subjects:

?? sub4.9 ??

Divisions:

Department of Physics

Depositing User:

Team Library

Date Deposited:

18 Feb 2015 08:42

Last Modified:

21 Jun 2018 11:45

URI:

http://raiithold.iith.ac.in/id/eprint/1296