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GMAW Wire Feedability: A Friction Model

Published

Author(s)

A 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 2.5:1 exponential increase inwire pulling force as the bend angle between the welding wire and the wire liner is varied from 0 to 180 . A one-dimensional force transducer recorded the wire pulling force, while a linear actuator pulled the welding wire through various wire liners impregnated with Nylon and Teflon at constant wire feed speeds ranging from 10 to 18 m/min (400 to 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 applications feeding steel welding wires exhibit agreement to within I0 % 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 intervalof speeds ranging from 10 to 18 m/min (400 to 700 in/min). Additional tests investigated the effect of pushing aluminum through the wire liner and the implications of the tribological wire-to-liner contact.
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

Keywords

feedability, friction, GMAW, wire feeding

Citation

Padilla, A. , Munoz, D. , Quinn, T. and Rorrer, R. (2003), GMAW Wire Feedability: A Friction Model, Trends in Welding Research, International Conference | 6th | | ASM International, Undefined (Accessed February 24, 2024)
Created June 30, 2003, Updated October 12, 2021