Paton STANDARDTIG-160, Руководство пользователя

Страница: 104 / 115

PATON StandardTIG DC MMA/TIG/MIG/MAG
- 102 -
and a pit (which is essentially a crater) in the welding seam must be welded with a reducing
voltage. The default voltage reduction time is responsible for regulating the smoothness of
this process, which is set to OFF, i.e., disabled, but it can be changed at your discretion.
See paragraph 6.1 to change the value of any function in the current welding mode.
5.6 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 shape, the quality of the weld formation also depends on the correct setting,
which reduces the likelihood of pores and reduces the grain structure, and this increases the
strength of the weld.
To implement this function in the source, you need to set three parameters:
pulsation power, pulsation frequency and pulse/pause ratio (or "duty cycle"). By default, the
pulsation power as a key parameter is in the OFF, i.e., the function is disabled, and the
pulsation frequency and duty cycle are at 20Hz and 50%, respectively.
To enable the function, simply set the pulsation power above zero. This parameter
is set as a percentage of the used main welding voltage set.
Example: Welding with 0.8mm wire, set wire feed speed 4.5 m/min, the set main
value of welding voltage is 18V, and pulsation power is 20%, while the pulsation frequency is
20Hz and the duty cycle is 50% by default.
Result: the source voltage will pulse from 14.4 V to 21.6 V at a frequency of 20 Hz;
the pulses will have an equal shape in amplitude and time.
The "duty cycle" parameter is set to 50% by default. Changing this value introduces
an asymmetry between the voltage pulse time and the voltage "pause" time:
default
"duty cycle" = 50% "duty cycle" = 20% "duty cycle" = 70%
The unit will react in such a way that the average voltage level during the welding
process will be at the level of the set basic value of the welding voltage of 18V (as it was set
earlier), respectively, and the heat input to the welding seam will be at the level of the same
18V, but the stability of the welding process, the mixing of the weld pool and penetration will
change.
t, sec t, sec
t, sec