Melting Rate of a Single-Phase Welding Wire

摘要

Results of an analytical investigation of the rate at which a single-phasewelding wire melts are presented. Both the heat conduction and transport terms are considered. By use of the Wiedmann-Franz law, the resulting equation may be reduced to an ordinary differential equation having constant coefficients. It is shown, by means of this equation, that Lesnewich's empirical rule may be derived, theoretically, when the wire extension is large. A method of obtaining a nearly exact relation connecting melting rate, wire extension and current density for single-phase wires is outlined.