MIG Welding

What is MIG Welding used for?

MIG (Metal Inert Gas) welding, also known as gas metal arc welding (GMAW), allows high-efficiency joining of steel and aluminium parts.  It’s a versatile process for automotive, aerospace, construction, and other production environments working extensively with these metals. MIG delivers simplified operation and reliability to rapidly mass fabricate welded components, frames, and assemblies where quality throughput and cost competitiveness matter.

What is the MIG Welding Process?

Using this process, an electric arc forms between a consumable wire electrode and grounded base metal while an inert gas shields the weld pool from atmospheric contamination. The welding gun nozzle channels the shielding gas around the arc and molten weld pool. The wire electrode feeds continuously through the welding gun, melting to deposit weld metal into the joint. Common shielding gases for MIG welding are argon, helium or mixes like argon/CO2. These gases prevent oxidation during welding. The most common wire types used are mild steel, aluminium, stainless steel and for some alloys.

Top 4 Benefits

MIG welding provides metal fabricators several advantages that explain its widespread industrial use:


Deposition rates for MIG exceed competing processes like stick or TIG welding. Its productivity aids industries requiring rapid production.


The inert gas shield and consistent wire feed enable solid, clean welds with minimal spatter and smoke produced.


With just a few parameters to set, it has a short learning curve. Operators can quickly become productive with basic training.


The MIG process works across many materials and thicknesses. Adjusting voltage, wire speed and technique allows welding a wide range of metal components.

Are there limitations to using MIG Welding?

Despite there being significant advantages, there are some downsides which metal fabricators consider for projects as listed below:-

  • Equipment Cost: Industrial MIG welders represent a substantial capital investment for smaller firms. Multi-process welders help maximise utility.
  • Material Limitations: While accommodating many metals, MIG lacks suitability for some exotic alloys or extremely thin sections less than 20 gauge.
  • Weld Positions: Weld quality diminishes on vertical or overhead joints requiring expertise. These orientations also slow production rates.
  • Line of Sight Needed: The wire electrode and weld nozzle tip must directly access joint areas, impeding small spaces.

Understanding these limitations allows manufacturers to supplement MIG welding with other techniques when required by product specifications.

Equipment required

With the right welding equipment and setup, it can boost efficiency and quality versus manual welding approaches through automated, continuous processes. Carrying out MIG welding operations requires several vital components:-

  • Power Source: Provides adjustable output voltage and current control to sustain a stable arc
  • Wire Feed System: Maintains continuous supply of electrode wire to the weld area from spools
  • MIG Torch/Gun: Safely transfers current and shielding gas to establish arc at weld.
  • Ground Clamp: Secures workpiece to complete the electrical circuit back to the power source.
  • Shielding Gas Supply: Provides inert argon, helium, or CO2 mixes to shield welding arc
  • Electrode Wire: Spooled wires composed of material matching base metal (steel, aluminium etc.)
  • Drive Rolls: Feed wire electrode steadily and without deformation
  • Personal Protective Equipment: Protects operator from arc eye and fumes during welding

Mig Welding Facilities at our Premises

To support you with your welding project, we have the following at our manufacturing premises:-

  • 3x ABB robotic welding cells
  • 6x Fanuc robotics welding cells
  • Fronius CMT welding equipment; and
  • 13x Welding Bays

Get in touch to discuss your project.

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