Aluminium MIG welding: do you know the benefits?

Written in Processes on
principale - saldatura mig alluminio

At Minifaber we deal with aluminium MIG welding on large and small quantities of product, even with productions staggered over time; here we'll explain all the advantages of MIG welding of aluminium.

Aluminium is a very ductile metal, light and resistant to corrosion; it enjoys excellent heat and electrical conductivity and has a quite low melting temperature, around 660°. Unfortunately, its reaction with oxygen causes a layer of oxide (very hard) on its surface that can create problems during welding.

Let's take a closer look at how MIG welding takes place and what are the advantages of using welding robots in terms of:

  • precision
  • safety
  • convenience.

 

Precautions for aluminium welding

As we have said, aluminium reacts with oxygen creating a very hard oxide layer on its outer surface. For this reason, the MIG welding process of aluminium starts with the removal of the oxide layer - alumina: it must be ensured that no alumina molecule remains, otherwise the welded joint will not be intact.

Furthermore, given the thermal conductivity of the metal, it is necessary to preheat the parts. To prevent the metal from re-oxidising before and during welding, a shielding gas: is used: the gas most often used is pure argon which also has the ability to increase the temperature of the electric arc, improving quality of the merger.

 

This is how to MIG weld aluminium

MIG welding metal arc inert gas - aluminium is a process in which a drop of filler material (the welding wire) is transferred to the material to be welded, thus creating the weld of the joint.

MIG welding has many advantages including:

  • few splashes
  • better surface dilution and regularity
  • better control of the heat input
  • possibility of welding out of position
  • possibility of welding very thin metals.

 

Robotic MIG welding aluminium

Today, MIG welding aluminium is mostly robotised; the whole process gains in terms of:

  • precision of the final result, because each parameter is automatically controlled by the machine and maintained for the entire duration of the welding
  • optimised timing, because robotic welding works at much higher rates, even on larger metals
  • optimised resources, because less human work is required; from this point of view, robotic MIG welding also improves operator safety, who are no longer directly involved in the most complex operations.

MIG welding aluminium with Minifaber

In Minifaber we deal with welding in every aspect: resistance welding, projection welding, MIG / MAG, TIG, and on all metals. If you are looking for a MIG aluminium welding service, then you are in the right place; our staff perfectly manages the internal machinery, offering our customers MIG aluminium welds that can be applied both to small lots to large quantities of parts.

What's more, we manufacture both semi-finished and finished and complex products (home appliances, for example). If you need to stagger your production over several periods, we can always meet your demand.

Angela Melocchi
author Angela Melocchi
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