PATON
PRO-315
MMA/TIG/MIG/MAG
-18 -
To implement this function in the machine, you need to set three parameters:
pulsating power [Po.P], pulsatio
n frequency [Fr.P] and filling factor (or “duty
cycle”) [dut]. By default, the pulsating power [Po.P] as a key parameter is in the
“OFF” position, i.e. the function is turned off, and the pulsation frequency [Fr.P]
and “duty cycle” [dut] are at the most co
mmon values of 10.0 Hz and 50%,
respectively. To enable the function, it is enough to set the pulsating power [Po.P]
greater than zero. This parameter is set as a percentage of the existing main arc
current set.
Example: welding with non-consumable tungsten electrode with a diameter of
Ø2 mm, the installed main value of the arc current is 100 A, and the pulsating
power [Po.P] = 30%, while the pulsation frequency [Fr.P] = 10.0 Hz and “duty cycle”
[dut] = 50% by default.
Result: the current will pulsate from 70 A to 130 A with a frequency of 10 Hz,
the pulses will have an equal shape both in amplitude and in time.
The “duty cycle” parameter is set to 50% by default; changing this value
introduces asymmetry between the current pulse time and the current “pause”
time:
by default
"duty cycle" [dut] = 50%
"duty cycle" [dut] = 20%
"duty cycle" [dut] = 70%
The machine will react in such a way that the average current level, during
the welding process, will be at the level of the installed arc current main value - 100
A (as it was set), respectively, and the heat input to the welding seam will be at the
same 100 A, but the welding process stability and the weld pool mixing will change.
This is a very important condition for the user to accurately estimate the amount of
change in heat input to the weld pool, for example, comparing with another main
current without a pulsed mode.
These parameters are set in different ways in different situations, according
to the welder's requirements. The order of changing the value of any function in
the current welding mode, see cl. 6.1.
t, s
t, s
t, s
