Call Us - Alphaweld(08) 9456 8000

Shopping Cart

Cart: 0 items
Total: $0.00 excl GST
  • Home /
  • Blog List /
  • Aluminium Welding: Everything You Need to Know

Aluminium Welding: Everything You Need to Know

Date: 29-10-2020
Welding Aluminium

Aluminium is the most widespread metal on earth and the third most common chemical element on the planet.

It took around 50 years for the metal to be produced industrially after it was first discovered in 1824.

Flash forward to the present day and aluminium is a part of our everyday lives in a huge variety of ways.

Aluminium is a lightweight yet very strong and versatile material, hence its popularity across a wide range of industries and construction applications. However, it possesses some unique characteristics that mean welding with aluminium needs to be done in a careful and considered manner.

If you’re wondering how to weld aluminium effectively, we’ve put together an easy to understand basic guide with everything you need to know.

What to consider when Welding with Aluminum?

1. Know the Difference

If you are used to welding other metals like steel, you biggest mistake would be to assume that the process of welding aluminium would be the same.

Steel has a melting point of around 2,500 degrees whereas aluminium sits at around 1,221, depending on the grade. Before you begin, it is important to note the grade of aluminium you are working with and its individual requirements.

The thermal conductivity of aluminium is also different to other common metals. To avoid any issues with this during the welding process it is crucial that you choose the correct gas. 100% Argon gas or Argon combined with Helium will act as a protective shield during the aluminium welding process.

Where you may be used to welding steel with a weave technique, this is not appropriate for aluminium welding. A push or pulse technique will result in a better outcome.

2. Safety is Key

As with any welding process ensuring you have the correct PPE (personal protective equipment) should be a top priority.

Your PPE should work with you and for you, rather than against you. Good safety gear should actually improve working conditions in such a way that you not only work safer but more productively and efficiently too.

If you’re in need of quality welding PPE Alphaweld Supply Group stocks a wide range of equipment. Browse our full range to place your order today.

  • A welding helmet – something with auto-darkening, comfortable design, high visibility areas, and respiratory features

  • Welding gloves

  • Welding apron

  • Durable and protective clothing – if not specific work pants a pair of durable denim

  • Work safety boots

3. Have the Right Equipment

Having the right equipment for the job when it comes to welding is crucial. Not only will it ensure the process is safe, but it will also help you create higher quality outcomes.

Again, your equipment can vary based on project specifics however the most common pieces include:

  • A TIG or MIG welding machine

  • Welding electrodes based on your chosen machine

  • Welding wires, rods, and fillers – these will be specific to the alloy you are working with

  • Shielding Gas – depending on your job and process a mix of Helium and Argon can be used – in MIG welding it is recommended to use 100% Argon gas as a shield.

  • Welding torch

  • Welding tips – size and type will be based on intended use

TIG VS MIG Welding?

When it comes to aluminium welding TIG or Tungsten Inert Gas welding is often the preferred choice for may welders. Aluminium is capable of holding heat longer than other metals. Therefore, it is important to work with a process that will avoid burn through or overheating through current control. TIG allows more control in this instance and can be applied effectively to both thick plates and thin sheets of aluminium. When TIG welding it is important to choose a filler rod that is compatible with that of the alloy you are working with.

If you are welding thinner aluminium gauges MIG or Metal Inert Gas welding is an appropriate choice. MIG welding is suited to use with Argon gas only as a shield. The technique you choose to MIG weld with will also affect the way you work. If you opt for pulse welding, you’ll require an inverter power supply but if you go for spray arc welding, you’ll need constant currents and voltages. Much like TIG welding your welding wire or rod will need to have a similar alloy to the pieces of which you’re working with.

If you’re ready to start welding, Alphaweld Supply Group is your one stop supplier for all your equipment and accessory needs.

Our extensive range is available for easy online order and fast delivery meaning your workshop can easily stay stocked with high quality supplies to keep you working.

From welding machines and batteries, to helmets and other PPE, browse our full range here.

Based on our long experience and expertise in aluminium welding techniques and equipment we can help you in any welding application, so if you’ve got any more questions about aluminium welding processes or equipment contact our friendly expert team.