Gt-mig welding: a new technique for increased productivity in arc welding of aluminium alloys

摘要

A new technique for are welding of aluminium alloys, given the name GT-MIG (Gas Tungsten-Metal Inert Gas) weldiing, is presented and tested. The conventional MIG (Metal Inert Gas) and TIG (Tungsten Inert Gas) proesses are combined into one process; i.e. a MIG torch and a TIG torch are positioned with an internal distance of about 30 mm. The idea is that when combining the high productivity of the MIG with the flexibility of the TIG process, higher productivity can be obtained.