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Barnstaple 01271 860794 | London 02038 698253 | Plymouth 01752 422981 [email protected]

Welding is the process of joining together metal parts by heating the surface to melting point and fusing them together, forming a joint as the parts cool. At ANY Weld we use different types of welding and techniques for different projects. In this blog we’ve highlighted the different processes we use.

Welding

MIG (Metal Inert Gas) Welding

We most commonly use MIG Welding when working on structural steel. In this process, a solid wire is fed through a welding gun into the weld pool, joining two materials together. A shield gas is also present to protect the weld pool from airborne contaminants. MIG welding uses heat created from a DC electric arc.

An electrical arc is created between an electrode wire and the main metal that is being welded. The melting of the electrode wire by the arc creates the weld. The weld can cool down after the heat is removed, solidifying, and fusing together.

MIG welding is a good option as it’s fast and suitable for joining different types of metal, at different thicknesses. It is easy to learn and produces minimal waste.

TIG (Tungsten Inert Gas) Welding

We more commonly use this process when working on Stainless Steel and Aluminium, but it can be used for most conventional metals.

The TIG welding process is a more complicated one. The arc is formed between a pointed tungsten electrode and the workpiece in an inert gas atmosphere. The most common gases used are helium or argon, as they have no reaction with the weld pool and provide the welder with good visibility as they are transparent. Reactive gases can be added to increase the heat of the arc and speed of the welding. With TIG welding, the electrode doesn’t melt, so the welder feeds a thin wire of a filler metal through to the welding area to join the pieces together.

Arc Welding

Also known as Stick Welding, Arc welding is popular for outside use. Unlike MIG and TIG welding, it doesn’t use gas cylinders, and isn’t affected by wind. An electrical current goes through the electrode and melts it, so the weld pool is formed. The electrode has a flux coating, which melts down to protect the weld pool from contamination, similar to MIG and TIG processes. It creates a slag layer over the weld which should be chipped off once cool.

This method is portable and can be done on relatively thick sections of metal. There is no need for a wire feeder or gas cylinders. It is suitable for outdoor welding and works in strong wind conditions. This is why we use this method when welding on site.

If you have a project in mind, feel free to contact us today via [email protected] or to take a look at our work visit https://anyweld.co.uk/projects/