Paton PRO-160, Руководство пользователя

Страница: 87 / 99

- 85 -
PATON PRO DC MMA/TIG/MIG/MAG
By default, the reach time is set to OFF, i.e. disabled. See paragraph 6.1 to change the
value of any function in the current welding mode.
CAUTION!
When welding with steel wire, the build-up time [t.uP] at the source must be either
equal to or slightly less than that at the wire feeder. When welding with aluminium wire,
the build-up time [t.uP] at the source must be longer (+0.2...+ 0.5 sec) than that at the wire
feeder.
5.4 END OF WELDING VOLTAGE REDUCTION FUNCTION
This function is designed for smooth welding of the crater formed in the weld pool
under the influence of electromagnetic blast with an electric arc and subsequently being a
source of welding seam defects. The signal to start the function is to release the button on
the torch at the end of the welding process, and the movement of the torch must be
stopped and a pit (which is essentially a crater) in the welding seam must be welded with a
reducing voltage. The voltage reduction time [t.dn] is responsible for regulating the
smoothness of this process, both in the source and in the wire feed speed control unit. For
correct operation, these values must match. By default, it is set to 0.1 seconds, i.e. disabled.
You can change this value at your own discretion. See point 6.1 for the switching procedure
CAUTION!
When welding with steel wire, the reduction time [t.uP] at the source must be either
equal to or slightly more than that at the wire feeder. When welding with aluminium wire,
the reduction time [t.uP] at the source must be less (-0.3...-0.7 sec) than that at the wire
feeder.
5.5 PULSE VOLTAGE WELDING FUNCTION
This function is designed to facilitate the control of the welding process in spatial
positions other than the lower one, as well as when welding non-ferrous metals. The effect
occurs directly on the mixing of the molten metal of the seam, so it primarily affects the
shape of the seam. There is also a forced effect on the transfer of a drop into the weld pool,
which in turn affects the stability of the process. As with other types of welding, this
process replaces the welder's hand movements to some extent, especially in hard-to-reach
places. In addition to the correct shape, the quality of seam formation also depends on the
correct setting, which reduces the likelihood of pores and reduces the grain structure, and
thus increasing the strength of the welded joint.
To implement this function in the device, you need to set three parameters: pulsation
power [Po.P], pulsation frequency [Fr.P] and pulse/pause ratio (or "duty cycle") [dut]. By
default, pulsation power [Po.P] as a key parameter is set to OFF, i.e., the function is turned
off, and pulsation frequency [Fr.P] and "duty cycle" [dut] at the most common values of 20
Hz and 50%, respectively. To enable the function, simply set the pulsation power [Po.P]
above zero. This parameter is set as a percentage of the used main welding voltage set.
Example: welding with 0.8 mm wire, the set wire feed speed is 5.5 m/min, the set basic
value of the welding voltage is 18V, and the pulsation power [Po.P] = 20%, while the
pulsation frequency [Fr.P] = 20 Hz and "duty cycle" [dut] = 50% by default.