Weco Discovery 300 AC/DC EVO TIG Inverter Welder

Discovery 300AC/DC Evo is a revolutionary state-of-the-art 3Phase portable TIG AC/DC welding Inverter.

TIG AC functions are ideal for welding aluminum, magnesium, and related alloys. Ordinary steels, stainless steel and copper can be easily
welded in TIG DC.
Discovery 300AC/DC Evo is specifically designed for extremely precise welding in the construction, petrochemical, food industries and other applications that require very a high welding performance.
The new user interface (Evo) provides fast and effective access to all available functions. 50 programs can be loaded and saved in memory (JOB), all programs can be easily recalled when using an Up/Down torch.

It is also possible to create different jobs sequences to be used on specific applications. Simple selection of the MMA mode provides a choice of the electrode-type (basic, rutile, CrNi, Alu) setting, resulting in optimizing the weldability and parameters.

It is also possible to control the polarity switch (swap) directly from the user interface, avoiding any cable disconnection.

Weco Discovery 300AC/DC EVO Features:

Dynamic Arc.

The Dynamic Arc function automatically increases the welding current when the arc voltage decreases and vice versa. This controls the heat input to the work piece allowing for better arc control in situations such root pass on pipes

Quick Stard.

The Q Start (Quick start) function speeds up the joining of parts in the initial stage of the welding process. On activating this function the machine automatically switches to synergic pulsed mode for a preset time. The resulting pulses create movement of the molten metal on the two sheet metal edges thereby accelerating formation of the joint. This function is invaluable in the case of seams with slight openings or with irregular preparation. The duration of the series of pulses can be adjusted, (from 0.1 to 60 second) depending on the thickness and shape of the sheet to be welded.

Multitack.

The Multitack function reduces the heat output while joining two light gauge parts. A series of arc strikes at short time intervals allows the material to cool during the pause between one strike and the next and thus minimise its deformation. The ability to adjust the frequency of the arc strike makes it possible to adapt the arc to the welding speed and the joint geometry.

Quick Spot.

The Q-Start (Quick Spot) function reduces tacking times for light gauge sheet metal. The operator places the tungsten electrode on the work piece, thereby obtaining perfect control of the position of the join, once the electrode has been lifted the machine emits a very high intensity pulse with a very short preset time (from 0.01 Sec to 10 Sec). The pulse time varies depending on the type of  metal to be joined. In this way the material is tacked instantly with minimum heat transfer, leaving the metal white, clean and almost cold.

Extra Function.

This function makes it possible to shift the waveform towards the negative part with respect to zero.

This makes it possible to create a highly penetrative and precise fusion bath so that very light gauge sheets can be welded with an electrode tip comparable
to that of an electrode for DC – TIG welding.

The adjustable value in our AC/DC TIG power sources ranges from 0% to 80% (with respect to the DC – halfwave percentage).

The Extra Fusion function is not recommended when welding heavy gauges because the DC+ component is insufficient to ensure optimal
cleaning (pickling) of the part during the welding process.

Extra Function.

This function MIX AC/DC makes it possible to modulate the welding current, alternating a half-period of TIG
AC with a half-period of TIG DC-.

This means that the efficacy of AC TIG welding can be combined with the high penetration of DC TIG welding, thus obtaining high welding speed and creating the weld puddle rapidly on a cold workpiece.

It is also possible to weld heavier gauges with lower amperage, since the DC- portion is far higher than when using an entirely AC waveform.

The operator adjustable parameter is the percentage of AC waveform compared to DCwaveform over the entire period, which can be varied from 10% to 80%.