Ⅵ
.METHOD OF THE OPERATION
1.ARGON ARC WELDING(TIG)
a. FRONT OF WELDER b. BACK OF WELDER
1.1 CLEARING BEFORE WELDING
Tungsten argon an welding is very sensitive to surface contamination of filled metal.
Therefore before welding is carried out, grease, paint and coating on the surface,lubricant for
machining and oxidized film should be removed.
1.2 DC ARGON ARC WELDING
①
.selector "11" onto the position " DC TIG "or "AC TIG" or"MIX TIG", selector "10" onto the
position " pulse off " ,Connecting the gas inlet pipe to inlet "21" of the welding.
②
.Connecting gas inlet pipe of the welding torch to argon output of welder "17".
③
.Putting the aerial plug of the welding torch in the argon arc control socket "18".
④
.Testing gas: get the power of the welder ready and switch on the power "2", open the argon
bottle switch and switch on the flow meter, press the torch switch, select suitable argon flow.
⑤
. .Regulating the knob " 3 &13". Selecting suitable welding current according to thickness
of the workpiece to be welded.. Selecting suitable current down slope time and post flow
time according to the current.
Notice 1:
The current indicating meter on the front panel is used to display the preset output
current level before welding, and actual output level while welding: A lit display indicates input
power is turned on.
Notice 2:
When using
'
Adjustable foot control
'
.regulating the current with sole. selector "12" onto
the position " PEDAL "welding current will increase gradually when you step at full tilt the '
Adjus
table foot control
'
with sole.
Notice 3:
When using
'
Adjustable finger control torch
'
.regulating the current with finger.
selector "19" onto the position " Panel " or " PEDAL "or"
finger torch
",, then begin to weld.
oo
workpiece
torch
21
argon
bottle
switch
flow meter
gas inlet pipe
20
24
23
22
7
8
4
9
10
11
13
3
5
6
15
16
1
12
19
26
15 17
18
16
14
Digi-Multi250 ACDC
