gala gar Smart 310 TIG Pulse AC/DC, Technical Instruction Manual

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5.5.3 Pulsed TIG welding
Current change in pulsed TIG welding
In pulsed TIG mode, all DC TIG parameters except current (I3) and another 4 adjustable parameters are available
for this machine. Describe them as below.

Peak current (Ip):
It should be adjusted according to users’ technical requirements.

Base current (Ib):
It should be adjusted according to users’ technical requirements.

Pulsed frequency (1/T):
T=Tp+Tb. It should be adjusted according to users’ technical requirements.

Pulse duration ratio (100%*Tp/T): The percentage peak current time holding in pulse period. It should be
adjusted according to users’ technical requirements.

5.5.4 AC square wave TIG welding
tc tp
I0 I2
0
I1
tu td
I0-Initial current, I1-Welding current, I2-Pilot arc current,
tu-Upslope time, td-Downslope time
tp-AC period, tc-Cathode current time
Current change in AC square wave TIG welding
In AC square wave TIG welding, the pre-flow time and post-flow time are the same with those in DC TIG welding,
and others are described as below.

Initial current (I0), welding current (I1) & pilot arc current (I2): The preset value of the three parameters is
approximately the absolute average of the practical welding current, and can be adjusted according to users’
technical requirements.

Pulse frequency (1/tp):
It can be adjusted according to users’ technical requirements.

Cleaning strength (100%*Tc/Tp): Generally, in AC welding, when taking the electrode as anode, the current is
called cathode current. Its main function is to break up the oxidized layer of the workpiece, and the cleaning
strength is the percentage cathode current holding in the AC period. This parameter is 10~40% commonly. When
the value is smaller, arc is concentrative, molten pool is narrow and deep, and when it is bigger, arc is dispersive,
molten pool is wide and shallow.
Smart 310 TIG Pulse AC/DC