MIG-MIG WELDING PROCESS

摘要

A method and apparatus for MIG-MIG welding includes at least first and second sources (104,114) of wire, and first and second sources of power (102,112) . The first source of wire provides a first wire (106) to a main arc between the first wire (106) and a workpiece (110) . The first source of power (102) provides MIG power to a first current path including the first wire (106) and the workpiece (110) . The second source of wire provides a second wire to a filler arc between the first wire (106) and the second wire (116) . The second source of power (112) provides MIG power to a second current path including the first wire (106) and the second wire (116) .