Lincoln Electric LF 52D Operator's Manual page 28

Welding GTAW / GTAW-PULSE Process
Arc ignition can be achieved only by lift TIG method
(contact ignition and lift ignition).
Table 19. The Welding Programs
Process Powertec
GTAW -
GTAW-P -
Note: The list of available programs depends on the
power source.
Procedure of beginning welding of GTAW/GTAW-
PULSE process:

Connect Lincoln Electric power source that is using
for communication CAN protocol.

Connect GTAW torch to Euro Socket [1].
Note: To connect GTAW torch, adapter TIG-EURO
has to be purchased (See "Accessories" chapter).

Connect the work lead to output sockets of the power
source and lock it.

Connect the work lead to the welding piece with the
work clamp.

Install the proper tungsten electrode in the GTAW
torch.

Turn the input power ON.

Set the GTAW or GTAW-PULSE welding program.
Note: The list of available programs depends on the
power source.

Set the welding parameters.

The welding machine is now ready to weld.
Note: Arc Ignition is achieved by touching the work
piece with the electrode and lifting it by a few
millimeters – contact ignition and lift ignition.

By applying the principle of occupational health and
safety at welding, welding can be begun.
For program number 3 can be set:

Welding current]

Switch on / switch off the output voltage on the
output lead
Note: It does not work in the 4-Step.

Postflow Time

2-Step / 4-Step

Crater

Wave Control:

HOT START
For program number 8 can be set:

Welding current

Switch on / switch off the output voltage on the
output lead
Note: It does not work in the 4-Step.

Postflow Time

2-Step / 4-Step

Crater

Wave Control:

Pulse Period

Background current
English
Program Number
® ®
Speedtec Flextec
3
8 -
HOT START – percentage regulation of increasing
nominal current value during arc start with electrode. It
cause temporarily increased of output current and made
easy arc start with electrode.

Default value: +5.

Regulation range: from 0 to +10.0.
®
This parameter is only for SMAW.
Pulse Period influences the width of the arc and the
amount of heat input to the weld. If the value of
parameters is lower:

Improves penetration and the microstructure of the
weld.

The arc is narrower, more stable.

Reduces the amount of heat input to the weld.

Reduces distortions.

Increases welding speed.
Note: Adjust range depend on the power source.
Background Current - percentage value of nominal
welding current. Adjusts the overall heat input into the
weld. Changing the background current changes the
shape of the back bead.
Note: Adjust range depend on the power source.
Gouging
Table 20. The Welding Program – gouging
Process
Gouging
Note: The list of available programs depends on the
power source.
For program number 9 can be set:

Gouging current

Switch on / switch off the output voltage on the
output lead
26
Program number
® ®
Powertec Speedtec
9
®
Flextec
English