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6-3 TIPS AND GENERAL POINTERS
Important !
Always work with a well sharpened electrode !
This is the only way to achieve optimum results.
Always make sure that the work piece has a good contact to the
connecting terminal (i.e. crocodile clip).
In case of problems that arise as a result of poor electrical contact,
attach the connecting terminal to a part of the work piece where the
bare metal is exposed.
Never weld „freehand“, meaning: always lay both hands on the
hand-rests; this will aid in steadying the hands. If the hands shake,
the parameters of the device can be falsified and the welding result
affected.
Do not apply force when the electrode tip touches the work piece;
work using no pressure, or only the slightest of pressure !
Weld using only a low gas pressure !
In most cases about 2 l / min is enough.
TIPS
Take the time to get to know the machine its modes and operating techniques.
Try out the various output levels that the machine has to offer.
Bear in mind that every material reacts differently when welded, according to its heat-
conductivity.
When choosing the output levels of parameters, make allowances for the thickness of the
material which is to be welded and adjust settings accordingly.
Work with as much precision as possible: contact the electrode tip as precisely as you
can to the area where the weld is needed.
With experience you will observe that, the angle at which the electrode contacts the work
piece, has an impact on the “direction of flow” of the welding spot.
The deepest penetration into the material is achieved when the electrode is held at a 90°
angle to the work piece.
When working on “deep laying” or recessed welds, the electrode can allowed to protrude
slightly further out of the nozzle. In this case, the gas-flow rate should be slightly
increased.
If holes or pores are to be closed, or existing joints and parts strengthened, extra material
will be needed. Here, it can be helpful use an appropriate welding wire.
6-4 SHARPENING THE ELECTRODES
Please switch the machine off before changing the electrode; this is a safety precaution
which will safeguard against the uncontrolled triggering of a weld.
The electrode should be sharpened using a diamond grinding wheel, preferably one that
has a fine or middle grain.
The grinding angle should be 15°, (see the diag ram above).
