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Parameters of piping back sealing welding for mild steel(DCEP)
Tungsten
Piping
electrode
diameter/
diameter/
mm
mm
38
2.0
42
2.0
60
2.0
76
2.5
108
2.5
133
2.5
159
2.5
219
2.5
273
2.5
325
2.5
Notice: the above parameters originate from(Welding Dictionary)P167, Volume 1 of Edition 2.
Electrode selection
The welding current reference for different electrode diameter
Electrode diameter /mm
welding current /A
The relation between the welding current(I)' factor(K) & electrode diameter(d) (I=K×d: Carbon
electrode)
Electrode diameter /mm
Factor/K
3.5 Operation Environment
● Height above sea level is below 1000m.
● Operation temperature range:-100C～+400C.
● Relative humidity is below 90 % (200C).
● Preferably site the machine some angles above the floor level, the maximum angle does not exceed 150.
● Protect the machine against heavy rain or in hot circumstance against direct sunshine.
● The content of dust, acid, corrosive gas in the surrounding air or substance can not exceed normal standard.
● Take care that there is sufficient ventilation during welding. There is at least 30cm free distance between the
machine and wall..
3.6 Operation Notices
● Read §1 carefully before attempting to use this equipment.
● Connect the ground wire with the machine directly.
● In case closing the power switch, no-load voltage may be exported. Do not touch the output electrode with any part
of your body.
● Before operation, no concerned people should be left. Do not watch the arc in unprotected eyes.
● Ensure good ventilation of the machine to improve duty ratio.
● Turn off the engine when the operation finished to economize energy source.
● When power switch shuts off protectively because of failure. Don't restart it until problem is resolved. Otherwise, the
range of problem will be extended.
● If there is any problem and has no the authorized professional maintenance personal of our company, please
contact local our company agent or the branch company!
SMART 200 TIG PULSE
Welding
Gas nozzle
wire
diameter/
diameter
mm
mm
8
2
8
2
8
2
8-10
2.5
8-10
2.5
8-10
2.5
8-10
2.5
8-10
2.5
8-10
2.5
8-10
2.5
1.6
2.0
25-40
40-60
1.6
20-25
Welding
Arc
current/A
voltage/V
75-90
11-13
75-95
11-13
75-100
11-13
80-105
14-16
90-110
14-16
90-115
14-16
95-120
14-16
100-120
14-16
110-125
14-16
120-140
14-16
2.5
50-80
2-2.5
25-30
Argon
Welding
flow rate
rate
/
-1
cm·min
-1
L·min
6-8
4-5
6-8
4-5
7-9
4-5
8-10
4-5
9-11
5-6
10-12
5-6
11-13
5-6
12-14
5-6
12-14
5-6
12-14
5-6
3.2
100-130
3.2
30-40
31
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