A Mathematical Model of Wire Feeding Mechanisms in GMAW

Published

July 1, 2003

Author(s)

T M. Padilla, D. R. Munoz, Timothy P. Quinn, R. A. Rorrer

Abstract

A Hertzian based contact model of the friction between the welding wire and the wire liner has been developed to predict the wire pulling force for gas metal arc welding (GMAW). The model predicts a 2.5:1exponential increase in wire pulling force as the bend angle between the welding wire and the wire linear is varied from 0- 180 . A one-dimensional force transducer recorded wire pulling forces, while a linear actuator pulled the welding wire through various Nylon and Teflon *impregnated wire liners at constant wire feed speeds ranging from 10-18 m/min (400-700 in/min). Results indicate model agreement to within 5% when using aluminum welding wires ranging from 0.8 to 1.6 mm (0.030 to 0.0625 in) in diameter. Extension of the model to steel wire feeding applications exhibit agreement to wit6hin 10% when using 1.1 mm (0.045 in) diameter welding wires and a spiral-Wound steel wire liner Statistical analyses show an independence of wire pulling force from wire feed speed over the interval of speeds ranging from 10-18 m/min (400-700 in/min).

Proceedings Title

Trends in Welding Research, International Conference | 6th | | ASM International

Conference Dates

April 1, 2002

Conference Location

Undefined

Conference Title

Trends in Welding Research

Pub Type

Conferences

Keywords

aluminum wire feeding, friction model, GMAW wire feeding, hertzian contact mechanics, steel wire feeding, wire feeding, wire friction

Citation

Padilla, T. , Munoz, D. , Quinn, T. and Rorrer, R. (2003), A Mathematical Model of Wire Feeding Mechanisms in GMAW, Trends in Welding Research, International Conference | 6th | | ASM International, Undefined (Accessed April 30, 2024)