Types of Tig Welders

Air-Cooled AC Welder

• Also called a "buzz box," the air-cooled AC welder was initially created with better-than-average welding capacity; however, among all types of TIG welders, it produces the weakest electric arc due to its Open Circuit Voltage (OCV). Its duty cycle is also low; welding activity can only be done at the highest settings for 30 seconds, after which a 10-minute cooling period.

DC Transformer Welder

• Second only to good-quality inverter machines, the DC transformer welder can work dutifully at its highest settings for more extended intervals. This welder can last for several years with minimal maintenance; however, this machine consumes a lot of electric power. A DC transformer welder is also heavy and bulky and produces a lot noise when in use.

AC Oil-Cooled Welder

• The AC oil-cooled welder is easy to operate, designed for long-term use and creates constant fluid arcs effortlessly. Since it's cooled by oil, it can work for longer hours when compared to other TIG welders; however, AC oil-cooled welders are large and heavy, with the smallest models weighing more than 200 pounds. This welder has two voltage settings available: 50 volts and 80 volts.

The DC Inverter

• Diminutive in size and moderate in weight, the DC inverter is easily transportable. Set at higher amps, the DC inverter can weld in longer intervals. It uses power more productively and can generate consistent arcs once it's turned on. Several models also feature a quicker initial heat-up and give a more consistent and smooth finish.