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Murex Welding Products’ TIG Welding Guide contains applications of TIG welding and pointers to its successful use.

Of all the arc welding processes, TIG (tungsten inert gas) welding can achieve the highest quality welds and is the most versatile in terms of what can be welded and the position of the welds.

However, quality comes at the expense of time and TIG is generally slower than MIG or MMA welding but, where weld integrity is critical, production engineers are prepared to accept the additional process time.

TIG welding is versatile and can be used with most weldable metals, including dissimilar metals and thicknesses from 0.5mm upwards.

TIG welding machines are available in current ratings from 150A to 350A and can operate at currents as low as 3A for a 150A machine.

TIG machines can be used for brazing and MMA welding.

The most commonly used gas for TIG welding is pure argon.

For thick aluminium and copper, argon/helium would be used for the added heat from the helium.

TIG operatives must use the correct tungsten electrode otherwise problems can be experienced with striking the arc and maintaining a stable arc.

TIG can be used with or without a filler wire.

Murex is offering an array of different filler wires to suit the variety of applications for which TIG is used.

Murex can undertake welding trials on behalf of customers to help optimise welding parameters.

Support can also be provided to ensure the customer’s operatives are familiar with the equipment and process.

TIG produces welds that can often be left as they are, without the need for grinding.

This saves time and avoids problems associated with grinding on site, such as noise and dust.

Modern inverter-based TIG power sources are lighter and more portable than traditional units, so on-site TIG welding is common for fabrication and modifications/repairs.

Typical applications for TIG welding include: architectural stainless steel fabrications such as balustrades; vessels and pipework for the offshore, petrochemical and nuclear industries; aluminium alloy, magnesium and titanium fabrications for the aerospace industry; motorcycle and bicycle frames; and stainless steel pipework, vessels and machine frameworks for the food, beverage and dairy industries.

More unusual applications include jewellery (even gold can be welded with TIG), dentistry (for chrome cobalt frameworks) and titanium (for specialist high-strength, low-weight applications).

For fine work and low-current applications, TIG is being used as a more versatile alternative to micro-plasma welding.

Murex Welding Products

Murex Welding Products is today part of one of the world’s leading manufacturers of welding products, the ESAB Group. The company offers a full range of arc and gas welding and cutting products, welding consumables and personal protective equipment as well as welding accessories. The Murex Saffire brand is renowned for its associations with welding safety whilst the company also offers a comprehensive range of Gas Equipment Inspectors’ Training Courses, also designed to promote safety in the workplace.

At its UK headquarters in Waltham Cross in Hertfordshire, Murex Welding Products has a team of highly experienced and qualified staff who are always available to offer technical help and advice on all aspects of welding and cutting.

Murex Welding Products still remains “At the HEART of every good weld”.

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