A gas metal arc-welding test is performed to determine the value of melting factor f2 for a certain\nmetal and operation. The welding voltage = 25 volt
A gas metal arc-welding test is performed to determine the value of melting factor f2 for a certain
\r\nmetal and operation. The welding voltage = 25 volts, current = 125 amps, and heat transfer factor is
\r\nassumed to be = 0.90, a typical value for GMAW. The rate at which the filler metal is added to the
\r\nweld is 0.50 in3 per minute, and measurements indicate that the final weld bead consists of 57%
\r\nfiller metal and 43% base metal. The unit melting energy for the metal is known to be 75 Btu/in3.
\r\n(a) Find the melting factor. (b) What is the travel speed if the cross-sectional area of the weld bead =
\r\n0.05 in2?