Wire melting rate of alternating current gas metal arc welding

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The wire melting phenomenon in alternating current gas metal arc welding (AC-GMAW) process should be carefully observed and analyzed since it is one of the most important representative characteristics of GMAW process. In this study, a new form of wire melting rate equation for AC-GMAW process is proposed based on energy conservation theory and arc physics. Using experimental data, the wire melting rate coefficients of AC-GMAW are obtained through nonlinear regression analysis. The wire melting rate is influenced not only by the current waveform, electrode polarity, and droplet size but also by the shape of the wire tip. That is, if the wire tip becomes more slender, arc heating has more influence on the wire melting. Using the wire melting rate proposed in this research, the uncertainty of calculating wire melting rate coefficients of AC-GMAW can be excluded comparing to existing method.
Publisher
SPRINGER LONDON LTD
Issue Date
2017-05
Language
English
Article Type
Article
Citation

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, v.90, no.5-8, pp.1253 - 1263

ISSN
0268-3768
DOI
10.1007/s00170-016-9384-8
URI
http://hdl.handle.net/10203/223913
Appears in Collection
ME-Journal Papers(저널논문)
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