Topwell Protig-250Di 1 phase 220V portable inverter argon tig welding machine

1.Remote:used for foot pedal or Remote torch.
Local:adjusted Currents bu face panel
2.2T/4T holding mode or
Spot Welding mode selection.
3.Pulse ON/OFF selection.

4.Process selsction.
5.ARC FORCE/HOT START
6.Memory with capacity of 10 sets parameters.
7.Function Sequence

1.Gas pre-flow time(TIG)

Absolute setting range 0.1s to 5.0s (0.1s increments).

2.Ignition current(TIG)

Percentage of the main current.
Setting range 1% to 100%(1% increments).

3.Up-slope time(TIG)

Setting ranges:0.00s to 20.0s(0.1s increments).
The up-slope time can be set separately
for non-latched and latched.

4.Main current(TIG)/pulse cuttent

I min to max(1 A increments)
Main cuttent(MMA)
I min to I max(1 A increments)

5.Pulse time

Pulse time setting range:0.01s to 9.99s(0.01s increments)

TIG pulses

The pulse time applies to
the main cuttent phase(AMP) for pulses.

6.Pulse break time

Pulse break setting range:0.01s to 9.99s
(0.01s increments).

TIG pulses

The pulse break time applies to the secondary
current phase(AMP%).

7.Secondary current(TIG)/pulse pulse pause current

Setting range 1% to 100% (1% increments).
Percentage of the main current.

8.Down-slope time(TIG)

0.00s to 20.0s (0.1s increments).
The down-slope time can be set separately
for non-latched and latched.

9.End-crater current(TIG)

Setting range 1% to 100%(1% increments).
Percentage of the main current.

10.Gas post-flow time(TIG)

Setting ranges:0.1s to 20.0s(0.1s increments).

CONVENTIONAL PULSED TIG

HIGH SPEED PULSED TIG

Typically from 1 to 10 PPS. Provides a heating and
cooling effecton the weld puddle and can reduce
distortion by lowering the average amperage. This
heating and cooling effect also produces adistinct
ripple pattern in the weld bead. The relationship
between pulse frequency and travel speed determines
the distance between the ripples. Slow pulsing can
also be coordinated with filler metal addition and
can increase overall control of the weld puddle.

In excess of 40 PPS, Pulsed TIG becomes more
audible than visible—causing increased puddle
agitation for a better as-welded microstructure.

Pulsing the weld current at high speeds — between
a high Peak and a low Background amperage —
can also constrict and focus the arc.This results in
maximum arc stability, increased penetration and
increased travel speeds(Common Range:100–500

PPS).The Arc-Sharpening effects of high speed
pulsing are expanded to new dimensions. The ability      
to pulse at 5,000 PPS further enhances arc stability
and concentration potential — which is are required.