arcweld 130i-ST Manual Del Operador página 10

OPERATION CONTROL AND CONECTORS
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JOINT FORMS IN MMA
Butt joint
Common basic joint form: Butt joint, lap joint, corner joint & T joint.
ELECTRODE SELECTION
The electrode diameter selection is based on the workpiece
thickness, welding position, joint form, welding layer, etc. Please
refer to the following table.
The relationship between workpiece thickness and electrode
diameter:
Workpiece
2
thickness/mm
Electrode
diameter/mm
2
The welding current reference for different electrode diameter:
Workpiece
1,6
thickness/
mm
Welding
25~40
current/A
1.Electrode should be drying according to user manual before
using. For reducing the hydrogen of the molten pool and welding
seam, and avoiding the blowhole and cold crack.
2.In the welding process, the arc must not be too long; otherwise,
it will cause unstable arc burning, large spatter, light penetration,
undercut, blowhole, etc. If the arc is too short, it will cause electrode
stick.
3.In MMA welding the arc length is usually equal to 0,5~1,0 time
of the electrode diameter. The basic electrode's arc length is not
beyond the electrode diameter, it's better to choose the short arc
welding; the acid electrode's arc length is equal to the electrode
diameter.
WELDING PARAMETERS
Butt joint Lap joint
Lap joint
3
4~5
6~12
3,2 3,2~4 4~5
2,0 2,5
3,2
100~
40~60 50~80
130
Corner joint
Corner joint
OPERATION ENVIRONMENT
Height above sea level: below 1000m.
Operation temperature range: -10°C~+40°C.
Relative humidity: below 90 %(+20°C).
Preferably site the machine some angles above the floor level, the
maximum angle does not exceed 15°C .
Protect the machine against heavy rain or in hot circumstance
>13 against direct sunshine.
The content of dust, acid, corrosive gas in the surrounding air or
substance can not exceed normal standard.
4~6
Make care that there is sufficient ventilation during welding. There
is at least 30cm free distance between the machine and wall.
OPERATION NOTICE
4,0
Read Safety carefully before attempting to use this equipment.
160~
210
Connect the ground wire with the machine directly, and refer to
arcwelding defect and prevent method.
Input power must be AC as one phase, 50/60Hz, 220V~ or
220V~/230~ . Forbid working in lacking any phase.
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 sources.
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.
T joint
T joint
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