Influence of Preheated Wire on GMAW Process

Jun Ni; Hong Ming Gao

doi:10.4028/www.scientific.net/AMR.668.538

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 668Influence of Preheated Wire on GMAW Process

Influence of Preheated Wire on GMAW Process

Abstract:

An hot-wire GMAW process is proposed in which the wire is preheated by a TIG arc to enhance the wire melting, and the process is aimed at high efficiency welding with a low level heat input. The welding system is designed, the wire temperature is monitored and the metal transfer and arc behavior is observed. The preheating effect on the wire temperature is analyzed, and the influence of the hot wire on the metal transfer, arc behavior, and the weld formation are analyzed, compared with conventional GMAW. The results show that the preheated wire can significantly enhance the wire melting, and thus several beneficial effects on the GMAW process.

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Periodical:

Advanced Materials Research (Volume 668)

Pages:

538-542

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.668.538

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Online since:

March 2013

Authors:

Jun Ni, Hong Ming Gao

Keywords:

GMAW Process, Heat Input, Hot Wire, Metal Transfer

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