Lampert Werktechnik GmbH
Lampert Werktechnik GmbH
OPERATING MANUAL PUK D5
EN
7.2 Pulse duration
The pulse duration determines for how many milliseconds the power is applied, i.e. a longer pulse duration
results in a longer and deeper application of the energy to the workpiece and thus simultaneously a greater
development of heat. With very thin materials or wires, it is advisable to select a shorter pulse duration.
In particular when welding close to acrylic or ceramic parts or other heat-sensitive materials, welding times
of no more than 4 ms are recommended. With many silver alloys or other highly conductive metals a longer
welding time, starting at 10 ms, can also be advantageous in order to avoid heat cracks.
For successful work with the welding device, it is important that the power and pulse duration always
be carefully considered in close connection with each other. The total energy applied to the workpiece
is comprised of these two parameter settings together - prior to welding this must be considered following
an in-depth analysis of the welding task, the materials and the workpiece geometry.
8. Welding instructions
Prior to welding, always check the function of the eye protection filter. If the eye
protection filter (shutter) fails to switch over from light to dark, it must be immediately
exchanged by a qualified specialist. The device must not be operated until then.
8.1 Instructions for welding
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First free the workpiece of impurities with the PUK universal cleaner.
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A bare metallic point of the workpiece is then connected with the contact clamp.
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The welding process is triggered when the electrode tip lightly touches the area to be welded without
pressure. It is important here that the electrode tip remains in the position where initial contact is made
until welding takes place, i.e. neither follow the electrode with the workpiece if it retracts slightly
in the hand piece, nor pull back.
The welding process runs through the following phases automatically, as soon as the electrode touches
the workpiece:
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The gas valve is opened and the shielding gas is applied to the welding point through the hand piece.
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A signal tone (if activated in the settings) sounds and notifies of the arc.
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The welding protection filter is darkened.
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The arc is triggered with a slight delay and the electrode partly withdraws into the hand piece.
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The welding protection filter is switched off and the electrode returns to the initial position.
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The shielding gas supply cuts off and the welding process is ended.
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Touching the workpiece once more triggers the next welding process.
Apply extremely light pressure to the tip of the electrode when working!
The fine welding device is equipped with a function to prevent the electrode becoming welded
to the workpiece by incorrectly pressing or pressing too hard. If a welding point has already been set and
is pressed too hard to the workpiece when it comes into contact again, the welding process is not triggered;
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