MIG-MAG-welding.Explanation of the diverse, high-performance welding procedure.

What makes MIG-MAG-welding so very special?

MIG-MAG-welding or metal inert gas welding is comprised of metal inert gas welding (MIG) and metal active gas welding (MAG)

The high welding speed, minimal rework requirements, and low distortion render MIG-MAG-welding processes extremely economical. A particular weld seam strength, excellent thin-sheet properties, and the simple and safe use with steel, aluminium, and stainless steel make MIG-MAG-welding a universal option. 

These enormous advantages make MIG-MAG-welding the welding process that is currently the most commonly used

How does MIG-MAG-welding work?

MIG-MAG-welding has the electric arc burning between the melting, automatically fed welding rod (=electrode) and the workpiece. 

A separately added gas flows through the gas nozzle to protect the arc and the welding zone from oxygen in the environment, preventing oxidation on the weld pool and the welding rod. However, the shielding gas and the welding rod must be adapted to the base material. 

What materials and gases are suitable for MIG-MAG-welding?

Aluminium and aluminium alloys.

  • Procedure: MIG
  • Wire electrode: depending on the material to be welded 
  • Shielding gas: Ar, He, or mixtures 

General structural, boiler, and tube steel.

  • Procedure: MAG
  • Wire electrode: SG 1-3 
  • Shielding gas: Mixing gases (argon/CO² or CO²) 

Stainless steel and high-alloyed steels.

  • Procedure: MAG 
  • Wire electrode: depending on the material to be welded 
  • Shielding gas: Mixing gases (argon/CO² or argon/O²) 

Advantages and disadvantages of MIG-MAG-welding.


  • Easy to learn 
  • High welding speed 
  • Minimal rework and low distortion 
  • Low costs for additional material 
  • Excellent thin-sheet properties 
  • Very good for mechanised and automated welding 


  • The shielding gas supply can be disturbed by draughts 
  • Susceptible to rust and moisture 
  • Not suitable for aseptic and food applications 

MIG-MAG-welding in practice: High quality. High economic efficiency.

To you, MIG-MAG-welding with Lorch means: Fast welding, minimal rework, and low distortion. This enables a new level of economic efficiency thanks to the usual Lorch quality.

Our solutions for MIG-MAG-welding

Always well-advised with close, personal, and honest support.

Are you interested in a Lorch welding unit with special aptitude for MIG-MAG-welding but not quite certain of which model to choose yet? Do you have any other questions? The Lorch partner search will easily let you find a competent contact in your area to give you some personal advice.