L52346 Application to Other Welding Processes

The essential variable methodology that was developed for single torch welding can also be extended to dual torch GMAW welding. Dual torch welding has great commercial significance because of the potential it offers for higher productivity and lower construction costs as reported by Hammond [1]. But dual torch welding offers an extra layer of complexity because the thermal effect of the trailing torch has significant influence on the cooling behavior of the leading torch. In addition, the cooling behavior of the bead deposited by the trailing torch is expected to be slower than beads deposited with a single torch. This is the last in the series of topical reports that detail the research leading to the development of the optimized welding solutions for X100 line pipe steel.