COMBINED M1G AND TIG ARC WELDING CHARACTERISTICS

摘要

The penetration characteristics of melt runs made with a d.c. negative tungsten arc and of bead de¬posits with a d.c. positive consumable electrode arc are compared briefly. The addition of a leading tungsten arc to a consumable electrode arc (steel/C02 is shown to increase the penetration and bead width of the MIG system at a given current, and give a better overall bead profile typical of higher current operation.