Lampert PUK D3 Operating Manual - page 16
© Lampert Werktechnik GmbH
2017
15
Connect both of the workpieces which are to be fixed at
an area of bare metal with a contact clamp, one to the
blue one and the other to the black. When the two parts
are touching, the welding process can be triggered, using
the foot switch. The handpiece is not used during
this process.
The required welding power is determined
by the strength of the connection desired as well as the
workpiece geometry. The welding time setting is of
secondary importance in this mode, and can only be
varied to a very limited extent.
AFTER WELDING HAS BEEN SUCCESSFULLY COMPLETED, AND BEFORE SWITCHING TO ANOTHER
USER LEVEL, PLEASE REMOVE THE BLUE CONNECTION CABLE!
NOTE: DURING FIXATION WELDING, THE FOOT SWITCH IS ALWAYS ACTIVE, AND CANNOT BE
DEACTIVATED!
7.4.2 RETENTION WELDING WITH THE FOOT SWITCH
Please switch off the machine prior to
exchanging the electrodes or the adapter.
This prevents uncontrolled triggering of the
welding process.
Remove the electrodes, replace the clamping nut and
chuck with the pin welding adapter. Work without the
clamping nut and nozzle. Then select the diameter of the
adapter being used, by pressing the respective button on
the display of the PUK D3. Then connect the workpiece
to an area of bare metal, using a connection terminal.
Insert a pin of the appropriate diameter into the pin
welding adapter.
•
The 1
st
light touch of the workpiece pulls back
the pin welding adapter.
•
With the 2
nd
light touch, the eye protection
system (shutter) in the microscope can be
clearly seen flickering.
Pressing the foot switch at this stage triggers
the welding process.
A good welded connection is indicated by a clearly
audible welding noise. If the process passes off without
making a noise, then the connection is presumably of
insufficient strength. Blasting or roughening polished
welding points before welding may have a positive effect
on welding behaviour for pin welding. No shielding gas
flows during the whole process.
PRESSING AND HOLDING THE FOOT SWITCH (APPROX. 2 SEC.) (WITHOUT TOUCHING A WORKPIECE) CAUSES
IT TO BE DEACTIVATED AND THE BLUE DOT ON THE DISPLAY DISAPPEARS
7.5 BASICS AND TIPS
IMPORTANT!
•
Always work with a well sharpened electrode (see point
7.6 for information about sharpening the electrodes).
•
Ensure extremely good contact between the workpiece
and the contact clamp, i.e. make contact between the
workpiece and the connection cable terminal at a point
which is metallically blank.
•
Never weld "free hand", i.e. use the hand rests of the
microscope SM5. Shaking hands can cause the
configured parameters to be falsified.
•
Apply only light force to the electrode tip.
•
Weld with the correct gas flow of approx. 2 litres per
minute and check this regularly.
•
With a little experience you will notice that the angle
with which you touch the workpiece with tip of the
electrode affects the "direction of flow" of the welding
point.
•
The electrode can easily be clamped in somewhat
longer for welding recessed areas.
•
The electrode can easily be clamped in somewhat
longer for welding recessed areas.
7.6 GRINDING THE ELECTRODES
Please switch off the machine prior to exchanging
the electrodes. This prevents uncontrolled
triggering of the welding process.
If possible, the electrodes should be sharpened with a
diamond disk with fine or medium grain.
The recommended angle of grinding is approx. 15°.
See also the video “Electrodes” on
www.youtube.com/LampertWelding.