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The PrimeWeld TIG225X AC/DC TIG Welder with Pulse is a versatile welding machine fit to help you complete various projects. Whether you're welding vehicle bodies, metal furniture, or sculpture, the TIG is unmatched for true hands-on craftsmanship. TIG welding is most famous for its beautiful beads. Exposed joints like bicycle frames, street rods, water tanks, and fence work are where the TIG process shines.
This machine lasts under rugged real-world conditions, just like every PrimeWeld product. The TIG225X AC/DC welder with Pulse is the best TIG welder for your money in its price range.
AC/DC GTAW-P DC-SMAW
|Input voltage||1 phase AC, 110V +/- 15%||1 Phase AC, 220V +/- 15%|
Input connector type
Pre-wired for NEMA 6-50P
*adapter provided for
NEMA 6-50 to NEMA 5-15
(for 220V or 110V operations)
|Rated input current||
|Rated output voltage||
|Rated output current||
|Arc initiation (TIG)||High-Frequency Start (HF start)|
|Duty Cycle||See Duty Cycle Table|
|No-load power consumption||40W|
|Ingress protection rating (IP)||
|Weight||18.5 kg / 40.7 lbs|
|Overall dimensions||20.50 x 11.80 x 21.46 inches|
|Remote control||2T operation|
|Breaker size||50 amp 22v/30 amp 110v|
|Welding process dependent|
|Starting current||10A to 225A|
|Ending current||10A to 225A|
|Current upslope||0s to 10s|
|Welding current||10A to 225A|
|Base current||5% to 95%|
Low: 0.5Hz to 10Hz
High: 10Hz to 200Hz
|Gas: Pre-Flow||0.1s to 3s|
|Gas: Post-Flow||0s to 15s|
|AC Frequency||40Hz to 200Hz|
|AC Balance||10% to 90%|
|Welding Type||Input Voltage||Duty Cycle|
|TIG||110V||140A/15.6V @ 40%|
|124A/14.9V @ 60%|
|108A/14.3V @ 100%|
|220V||225A/19V @ 40%|
|183A/17.3V @ 60%|
|155A/16.2V @ 100%|
|Stick||110V||120A/24.8V @ 40%|
|98A/23.9V @ 60%|
|76A/23V @ 100%|
|220V||180A/27.2V @ 40%|
|162A/26.5V @ 60%|
|139A/25.6V @ 100%|
*note: all values are at 25°C
HF (high frequency) ignition allows the arc to be started in TIG welding without touching the tungsten to the workpiece. By depressing the foot pedal, the machine will activate the gas flow and the HF ignition resulting in the arc igniting across the gap between the tungsten electrode and the workpiece. The distance between the electrode and the workpiece can be up to 1/4" (6.3mm). This arc ignition method prevents tungsten inclusion in the workpiece, promotes longer tungsten life, and offers better operator control over starting and stopping the arc.
AC (alternating current) enables you to TIG weld non-ferrous alloys like aluminum, aluminum alloys, and magnesium. These materials have an insulating surface oxide layer that melts at a higher temperature than the base metal, making it difficult to weld the base metal if the oxides are not removed. AC welding current is ideal because the nature of the AC waveform assists in breaking the surface oxide layer. HF arc ignition provides an easy and precise starting of the arc.
A: Welding Current: Provides adjustment and control of the main welding current. Adjustment range: 10-225 Amps (220V), 10-40 Amps (110V).
B: Pre-Flow: Provides adjustment and control of gas flow before it is ignited. It should normally be longer than 0.5 s to provide shielding gas to the nozzle tip outlet to cover the welding start point and the tungsten electrode. In the case of a longer gas line from the cylinder, the pre-run time should be longer. Adjustment range: 0.1-3 seconds.
C: Start Current: Current appearing in the circuit after pressing the button in the grip handle. The higher the initial current, the easier it is to ignite the arc. However, when welding thin sheets, too high an initial current can lead to the burning of the sheet. In some welding modes, the current does not increase in order to heat the welded element. Adjustment range 10-225 Amps (220V), 10-140 Amps (110V).
D: Up Slope: Time of welding current rise from the start current to the set welding current value. Adjustment range: 0-10 seconds.
E: Base Current: Provides adjustment and control of the background welding current during pulse welding. Settings represent a percentage of the peak welding current. For example, peak current set at 100 amps with background current set at 20% (20 amps) it means the output current during the pulse cycle will go from 100 amps down to 20 amps during each pulse cycle. Adjustment range: 5-95%.
F: Pulses Per Second: Provides adjustment and setting of the pulse frequency when the machine is set in Pulse mode. It adjusts the amount of times per second (Hz) the output current switches from the peak current setting to background current setting. Adjustment is 10 - 200Hz (high) and 0.5 to 10Hz (low).
G: Pulse Duty: The ratio of the peak current in a pulse period, allows you to adjust the depth of the penetration. The increase in pulse duty increases the penetration depth, the reduction reduces the amount of heat entering the material, reducing the risk of burning thinner sheets or smaller elements. Lower pulse duty values should be used for higher currents. For example, a ratio of 30% should be used for currents greater than 200A. The larger pulse duty should be used for small currents, for example, a ratio greater than 50% should be used for currents below 100A. Adjustment range is 10 - 90%.
H: Down Slope: Time of welding current dropping from the value set to zero or the value of the end current. Adjustment 0 - 25 seconds.
I: End Current: Current used in some welding modes, when the arc is not extinguished immediately after the welding current sinking. It allows filling the crater and the end of the weld. Adjustment range 10 - 225 Amps (220V), 10 - 140 Amps (110V).
J: Post Flow: Provides adjustment and control of gas flow after the welding arc is extinguished. Post gas flow prevents contamination of the weld pool during its cool down period from molten state to solid at the weld finish and keeps the tungsten electrode protected from oxidizing atmosphere during the cool down cycle. The Post Gas flow time will depend on the tungsten size and welding current that is being used, when the Post Gas flow is set correctly, the tungsten electrode will have a clean shiny finish. Adjustment 0 - 15 seconds.
K: AC Frequency: Adjusts the AC output frequency to control the arc cone width and improve directional control of the arc. Adjustment range is 40 - 200 Hz.
L: AC Balance: To understand how balance control works, you first need to understand why aluminum and magnesium require an AC welding output. These materials have an insulating surface oxide layer that melts at a higher temperature than the base metal, making it difficult to weld the base metal if the oxides are not removed. AC welding current is ideal because the nature of the AC output assists in breaking the surface oxide layer. The AC Balance dial is for adjusting the current flow time between positive (+) and negative (-).