What are the limitations of MIG Welding?

  • Welding equipment is more complex, more costly and less portable than that for Stick Welding
  • The required welding torch makes reaching into constricted areas difficult, and the need for good gas shielding necessitates the torch being relatively close to the weld area
  • The welding arc with its gas shield must be protected from drafts that might cause the shielding to be blown away from the arc. This limits the use of the process outdoors unless protective shields are placed around the work area
  • Relatively high levels of radiated heat and light may cause operator discomfort and initial resistance to the process
  • Burn through is a common issue when welding extremely thin materials (< 1/16”)
  • With conventional transfer when welding out of position, weld metal deposition rates are less than those achieved with Flux Cored Welding
  • This process does not perform well where base metal contamination is a problem. The base metal must be clean and rust free
  • Lack of fusion defects may result where process parameters are incorrectly set. This is especially critical when welding base metals thicker than 1/4”