© Lampert Werktechnik GmbH
2017
9
6. SELECTION OF THE WELDING PARAMETERS
6.1 SELECTION OF THE WELDING PARAMETERS
BASIC INFORMATION ABOUT THE EFFECTS OF WELDING POWER AND WELDING TIME:
POWER:
The welding power or the strength of welding energy is set
with the power control (23).
The size and intensity of the welding points are controlled
in this way, i.e. the higher the power the larger the welding
point.
With very thin materials too high a power level can also
quickly result in damage, i.e. it makes sense to experiment
with samples for beginners with the „M280“ system to find
the optimum power level, starting at a power of 20% or with
very fine welding, even lower. Power settings between 35
and 50% are considered medium welding powers.
With copper alloys in particular it is generally not practical
to increase the power level above 50% as the metal will
otherwise very quickly start to “spatter” instead of welding.
Other metals can be welded with higher power levels, just
as with stainless steel. A very high power level is not
practical in the most usual circumstances. There is a
danger of inhomogeneous welds and only experienced
users should move outside this range.
WELDING TIME OR PULSE DURATION:
The pulse duration / welding time button (25) determines
for how many milliseconds the welding 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 recommended to use
a shorter welding time, primarily when welding near to
heat-sensitive materials. Welding times of no more than 4
ms are recommended here.
With copper alloys or other highly conductive metals a
longer welding time can be advantageous in order to avoid
hot cracks, starting at 10 ms.
IMPORTANT FOR SUCCESSFUL OPERATION WITH THE „M280“:
Welding power and pulse duration must be considered in
close context with each other in all cases! The total energy
applied to the workpiece is comprised of these two
parameter settings together – prior to welding this must be
considered carefully following an in-depth analysis of the
welding task, the materials and the workpiece geometry.
6.1.1 SELECTION OF THE WELDING PARAMETERS ON „M280 “:
The welding parameters are set in two stages:
1.
In the upper area of the display, the metal to be welded is selected by means of
pressing the metal / material button (26).
2.
Pressing the geometry button (22) selects the given welding situation.
•
The welding time can be changed at any time with the
corresponding buttons (25).
•
The power can also be changed at any time with the
corresponding buttons (23).
6.1.2 DESCRIPTION OF THE WELDING SITUATION WITH ASSOCIATED SYMBOL ON THE SCREEN:
•
T
he meaning of the following symbols is always the same for each of the preconfigured materials.
Universal setting for material thicknesses from
0.3 mm. This is well suited for most
applications (
≥
0.3 mm).
Welding in sharp angles and tight joint
situations. Here it is IMPORTANT to use short
welding times of 3 to 5 msec.
Melting of welding wire. Use identical alloy wire
with a diameter of 0.3 to 0.4 mm. Ideal is a
diameter of 0.35 mm.
