![background image](http://html1.mh-extra.com/html/stealth/9011h/9011h_operators-manual_1368250018.webp)
STEALTH DIGI-TIG 180 DC PULSE PFC MV
4.3 Argon Arc Welding Operation
4.3.1 TIG welding (4T operation)
The start current and crater current can be pre-set. This function can
compensate the possible crater that appears at the beginning and end of
welding. Thus, 4T is suitable for the welding of medium thickness plates.
Pulsed TIG long welding (4T)
Introduction
• 0
Press and hold the gun switch – Electromagnetic gas valve is turned on.
The shielding gas starts to flow
•
0~t1 Pre flow time – adjustment range of pre flow time: 0~2S
•
t1
Striking success – adjustment range of start current: 5~100% of main current
•
t2
Loosen the gun switch – the output current slopes up from start current.
If the output pulse function is turned on, the output current is pulsed
•
t2~t3 Output current slopes up to the setting current value – adjustment range of
up slope time 0~10S
•
t3~t4 Welding process – during this period the gun switch is loosened
Note: If the output pulse function is turned on, the output current is pulsed.
If the output pulse function is turned off, the output current is the welding
current (Iw)
•
t4
Repress the gun switch – the output current slopes down to crater current.
If the output pulse function is turned on, the slope down current is pulsed
•
t4~t5 Down slope time – adjustment range of down slope time: 0~10S
•
t5~t6 Crater current holds time – adjustment range of crater current: 5~100% of
main current
•
t6
Loosen the gun switch – stop arc and keep the argon flowing
•
t6~t7 Post flow time – adjustment range of post flow time: 0~10S
•
t7
Electromagnetic valve is closed and stop argon flowing – welding is complete
MAINTENANCE AND TROUBLESHOOTING
18
l
t4
~
t5
:
Down slope time, adjustment rang of down slope time: 0~10S;
l
t5
~
t6
:
Crater current holds time; adjustment range of crater current: 5~100% of main current;
l
t6
:
Loosen the gun switch, stop arc, and keep on argon flowing;
l
t6
~
t7
:
Post flow time, adjustment range of post flow time: 0
~
10S;
l
t7
:
Electromagnetic valve is closed and stop argon flowing. Welding is finished.
§4.3.2 TIG welding (2T operation)
Pulsed TIG short welding
(
2T
):
t
(
s
)
0
I
(
A
)
Loosen the welding
gun switch
Press and hold the welding
gun switch
t1
t5
Striking success
Stop arc
t3
t4
Base current setting value
t2
Welding current (peak
current) setting value
5A
Introduction
:
l
0
:
Press and hold the gun switch, Electromagnetic gas valve is turned on. The
shielding gas starts to flow;
l
0
~
t1
:
Pre flow time, adjustment range of pre flow time : 0~2S;
l
t1
~
t2
:
Striking success, the output current slopes up to the setting current from minimum current
(5A); if the output pulse function is turned on, the slope up current is pulsed;
l
t2
~
t3
:
During the whole welding process, the gun switch is pressed and held without releasing;
Note: If the output pulse function is turned on, the output current is pulsed. If the output pulse
function is turned off, the output current is DC current;
l
t3
:
Loosen the gun switch, the output current slopes down; if the output pulse function is turned
on, the slope down current is pulsed;
l
t3
~
t4
:
The output current slopes down to minimum current (5A), stop arc; adjustment range of
down slope time: 0~10S;
l
t4
~
t5
:
Post flow time, adjustment range of post flow time: 0
~
10S;
18