Tig Welders appeared in the 70s of the twentieth century. The main difference between such a welding machine and a transformer is the method of converting electric current or inverting. The alternating current from the normal consumer network goes to the rectifier and is converted to DC. After that, the direct current is once again converted to an alternating high frequency from 20 to 50 kHz. The next stage is the reduction of the alternating voltage in the inverter unit to 70–90 V with an increase in the current to 100–200 A, which is necessary for welding.
Differences between tig welders
The first and main factor in the choice of the inverter is the area of its application. What is a Tig Welder purchased for? Will it be one-time welding at the cottage or is it planned to carry out large-scale daily work? The choice of the class of the Welder unit depends on the answer to these questions:
- Household class. Designed for low volume welding. The mode of operation of the inverter is short and the device requires long breaks after 5–10 minutes of work. Welding current only 120-200 A.
- Professional class. Inverters of this type are used for welding pipes in the repair of communications, the manufacture of frames and metal structures. The mode of operation without interruptions can be long. Welding quality is high.
- Industrial grade. Welding is performed at industrial facilities; the mode of operation is continuous throughout the day, with short breaks.
High-frequency Tig Welders have small dimensions, whereas in conventional welding machines the weight of the transformer can be very significant. Due to this, welding inverters are compact, convenient at work and are popular. You can visit protoolsadviser.com and find more information about Tig Welders and additional stuff.