iWeld CUT 70 IGBT, Руководство пользователя

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• When preparing for cutting, hold the cutting gun (the cutting gun does not contact
the work piece for a model of non-contact arc striking) and press the gun switch; at
this time, plasma arc will eject from the nozzle hole, indicating the electrode, nozzle,
etc. are installed correctly. If there is no plasma arc or only weak plasma arc ejected
from the nozzle hole, it indicates the electrode and nozzle are installed improperly,
so reinstallation is necessary after power-on.
• When cutting starts, the outer edge of the nozzle hole should be aligned to the
edge of the work piece. Press the cutting torch switch to strike the arc; if the arc is
not struck, release the switch and press it again. After successful arc striking, move
the cutting torch at a constant speed to conduct normal cutting (the moving speed
should vary from different plate thicknesses; if the sparks upturn, it indicates the
moving speed is too fast and the work piece is not cut through, and the moving
speed should be slower. If the sparks splash vertically to the work piece, it indicates
the moving speed is too slow and the adhering slags may increase, and the speed
should be improved properly.
• At the end of the cutting, when the work piece will be cut off, the cutting speed
should be slowed down, release the cutting torch switch to complete the cutting.
• Splashes adhering to the nozzle surface will affect the cooling effect of the nozzle,
so they should be removed in time, and dust and splashes on the cutting gun head
should be removed regularly so as to maintain a good heat emission effect.
• The cutting torch rack ensures the distance from the nozzle to the plate. Never re -
move the cutting torch rack during cutting; otherwise the normal distance from the
nozzle to the plate can not be guaranteed, thus causing the nozzle to touch the
plate so as to lead to the gun burned.
• Replace the electrode and nozzle.
In case of the following cases, be sure to replace the electrode and nozzle in time.
1) above 1.5 mm electrode consumption depth;
2) irregularly deformed nozzle aperture;
3) obviously slower cutting speed and green flames occurring for arc
4) difficult arc striking;
5) Slanting kerf or widening kerf
3-3. Cutting
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