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PATON
ProMIG series
DC MMA/TIG/MIG/MAG
parameter [dut] is changed to a value other than 50%, pulses become asymmetric, but
the machine calculates pulsing in such a way that, at constant set differential of pulses,
average level of arc current is maintained at the level of set base arc current value of 100
A (i.e. equal to the set value), in order to keep the resulting average heat input into the
weld at a constant level. This is necessary in the situation, when a user has reduced base
current and provided maintenance of stable welding process using pulses
–
thus,
decrease of heat input can be also clearly determined by comparison with initial base
current.
These parameters are set differently in different situations in accordance with
welding operator's requirements. See paragraph 6.1 for sequence of changing the value
of any function in the current welding mode
5. SEMIAUTOMATIC METAL INERT/ACTIVE GAS WELDING
(MIG/MAG)
Attention:
In the most general case, carbon dioxide "СО2" is used as shielding gas
for welding of iron, and aluminium is welded only using inert gases, such as argon
"Ar" and sometimes expensive helium "He". As an alternative option for stainless
and high-alloy steels, mixtures with different ratios are often used, such as
"70%Ar+30%CO2". Other gases can only be used upon approval of the equipment
manufacturer.
Attention:
Since the machine is equipped with a standard torch slot KZ-2 of EURO
type, the user can purchase a torch at his/her own discretion in the future.
Procedure for preparation to operation:
- install the source on the base of wire-feeding machine, for better rigidity brace the
source and the base with a strap (through slit-type apertures on the sides of the
source) and tighten the strap. The strap is bundled with the machine;
- connect the supply cable of the wire-feeding machine to slot
12
on the rear panel
of the source;
- insert the "earth" cable into the source socket
B "-"
;
- connect the "earth" cable to the work piece;
