Common Causes of Mig Torch Failure in Service and their Solutions

Failures of MIG torches in service are major causes of poor productivity due to stoppages in production, poor weld quality and excessive opreator fatigue. The major causes of these failures are reviewed and illustrated from the writers' experiences. Aspects of and criteria for MIG torch design are examined with particular reference to design of torches for robotic and automated welding applications Testing of torch design and performance is investigated guidelines are set out for the correct choice of torch and components for particular applications. The advantages and disadvantages of water-cooled torches are discussed.