Pulsed Or Standard (Single Wire); Metal Transfer; Special Features And Advantages - Fronius Timetwin Digital Bedienungsanleitung

Pulsed or Standard (single wire)

Metal transfer

I
L
I
Pulsed (single-wire, leading power source): Wel-
ding-current curve / schematic representation of
the metal transfer
I
T
I
(6)
Pulsed (single-wire, trailing power source): Wel-
ding-current curve / schematic representation of
the metal transfer
(1)
(2)
(3)
(4)
(5)
(6)
I = welding current of leading power source
L
I = welding current of trailing power source
T
Special features -
and advantages
Note! When FK 4000 R or FK 4000 R US cooling units are being used, both coo-
ling units must be switched to run continuously during single-wire welding:
-
Note! In order to ensure complete gas shielding during single-wire welding, the
solenoid valve on the idling power source must be open.
(1)
I (A)
= 0
T
(6) (3) (4) (3)
I (A) (2)
= 0
L
(5) (4) (5)
leading wire electrode
trailing wire electrode
active pulsed arc with droplet transfer
inactive pulsed arc (no droplet transfer)
standard arc
direction of welding
A signal is outputted by the robot control so that welding is carried out by
one power source only. This "single-wire welding" can be carried out by either
the leading or trailing power source, depending upon the torch position and
whether the weld is an inaccessible out-of-position seam. The second power
source is idle during this time.
Parameter C-C (cooling-unit control) = "On" on both Power source "1" and
Power source "2".
I (A)
I
L
t (s)
I = 0
T
(6) (5)
(4)
Standard (single-wire, leading power source):
Welding-current curve / schematic representati-
on of the metal transfer
I (A)
I
T
t (s)
I = 0
L
(6) (5)
(4)
Standard (single-wire, trailing power source):
Welding-current curve / schematic representati-
on of the metal transfer
(1)
t (s)
(2)
t (s)
(5) (5) (5)
79