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Straight answers to the questions people ask most when choosing a TIG welder package with UK-specification equipment, in standard, professional and master levels.
The term is not a fixed standard and is used differently by different sellers and makers. It usually suggests a machine intended for the UK mains supply, often with a suitable plug and manual in English, but this can vary.Do not rely on the label alone. Check the data plate and manual for the supply voltage and phase, the plug or breaker rating, and the gas connection, and have a qualified electrician confirm the supply before first use.
Makers often arrange a family of machines in levels, with simpler models covering core TIG functions and higher ones adding more adjustments, controls or output. The names and what they include differ between makers.Do not rely on the name. Compare maximum current, duty cycle, pulse, AC controls, memory and remote options against what you will use day to day, using the specification and manual for each machine.
DC machines weld steel, stainless steel and copper alloys. Aluminium and magnesium alloys are normally welded with AC, so an AC/DC machine is the usual choice if you expect to weld them.If you will only weld steel and stainless, DC is simpler. If aluminium might come up, consider AC/DC now, as a DC-only machine generally cannot be upgraded to AC. Check the manual or ask the maker if you are unsure.
Single-phase machines run from a standard supply and suit small workshops, garages and mobile use. Three-phase machines are normally larger, suit heavier work and need a three-phase supply.Check your supply and breaker ratings before choosing. A machine that cannot be supplied properly will not reach its rated output, and an undersized supply can cause nuisance tripping.
A package typically includes the power source, torch, earth lead and clamp, and a gas regulator or hose. Some also include a foot pedal, trolley or cooling unit.Read the contents list carefully. You will still need argon, tungsten, filler and your own protective equipment, and possibly a cylinder trolley or storage for the gas.
A water-cooled package suits heavy duty and longer welds at higher current, because the torch stays cooler and more comfortable. An air-cooled package is lighter and simpler and fine for many jobs.If you choose water cooling, use the recommended coolant and check level and flow before welding. Running a water-cooled torch without coolant can destroy it.