stayer MIG 131 Multi Mode D'emploi page 31

silent spray welding mode will be preferred. It is recommended
to start regulating the voltage to a medium point, indicated by
the SYNØ range, varying inside the synergic working mode
area.
When turning the control to the right, the right display of the
unit will show an opening arc referential between -30 and 30.
The reference value will be shown in a 3-second period of
time. After those three seconds, it will show the work voltage
value measured by the unit itself.
Wire speed: the amperage control modifies at the same time
the wire output speed depending on the working conditions
indicated in the unit. If special conditions affect the setting
of the exact speed, an increaser or decrease of the speed
can be selected by adjusting the wire speed at the originally
installed superior or lower immediate measurement.
D. MANUAL MODE: Pulse 13
-With the control 6 you can adjust the wire output speed from
1.6m/s to 20m/s
-With the control 9 you can adjust the unit output voltage from
13V to 40V
SPLASH CONTROL
The electric inductance 10 allows a splash reduction from the
wire welding process. Empirically try to increase or low the
control until achieving the best result.
Workpiece size limitation
The main restriction over the piece to weld is its thickness,
which is limited by the unit power.
As the power increases, you could be able to make correct
welds (with an adequate welding cord penetration) on higher
thickness pieces with less filler cords at a higher speed.
The following table may be useful as orientation:
C. - PULSED MIG
The equipment is configured using the front control panel.
It consists of keypads (12, 11/13, 14, 15, 16 and 26), two
multifunction rotary encoders (5/6 and 9/10), displays (1 and
12) and 34 configuration status LEDs.
The operation is intuitive from the buttons that indicate the
procedures (2T, 4T,...) for each type of welding (button 12),
the types of welding (MMA, MIG,...) on the button (11/13),
the thicknesses and materials to be welded for synergic
configuration (0.8, 1.0, 1.2,... / Fe, AlSi,...) on buttons 14 and
15, the gas purge on button 16 and the specific selection of
parameters to adjust with the encoders on button 26.
This machine is synergistic, which means that by configuring
the parameters of the work to be carried out, the machine
automatically configures itself to perfectly perform the
requested work, occasionally having to vary slightly the main
energy parameter 5/6.
The MIG 280 DOUBLE PULSED model adds to the previous
functions the synergistic automatic configuration depending
on the type of material and its thickness, as well as the
capacity of single pulse for better quality of steel beads and
double pulse for a maximum quality of aluminum cords, very
close to TIG AC.
It is not possible to give training in a user manual on the
technical basis and specific procedures of pulse welding.
Compared to conventional non-pulsed MIG / MAG welding,
it provides, if used correctly, great advantages in quality and
performance.
As an introduction to the concept, refer to the following image
taking into account that the abscissa axis is time.
The welding waveform at the top of the image can be
achieved by single pulse in which there is a single amplitude
modulation to create the base current (lower trace) and the
peak current, upper trace. The simple pulsed arc allows
'Spray' transfer with less intensity than with conventional non-
pulsed welding and yet with higher performance, less area
affected by heating, greater cleaning and less spatter and
projections. Simple pulse processes are especially suitable
for all types of carbon steels.
The welding waveform at the top of the image can also be
achieved by double pulse in which there are two modulations,
one in pulse width at static frequency and the other in variable
amplitude to create (on average) the same waveform. from
the top of the image. This procedure adds to the single
pulse greater, more precise control and greater adaptation
to the specific welding of aluminum, with the possibility of
narrower and penetrated beads and a smooth bead surface.
This procedure is valid for all types of aluminum, including
selectable (silicon and magnesium aluminum) synergistically
in the equipment.
ATC function
ATC stands for advanced temperature control. It is
recommended to select this procedure in welding of small
thickness aluminum. The selection is made using the
navigation button 15 and is indicated by the flashing of the
corresponding led in the material selection.
PIECE THICKNESS
1,5 a 5 mm
2,5 a 5 mm
5 a 12 mm
FILO
0,6 mm
0,8 mm
1,0 mm
1,2 - 1,6 mm
GENERAL USAGE INSTRUCTIONS
SPECIFIC MMA WELDING INSTRUCTIONS
(COATED ELECTRODE)
In this type of electric arc welding, the electrode itself
produces heat through an electric arc due to the environment
protection, the improved electrode coating and the filler metal
of the electrode metallic soul merging while welding.
You must choose the adequate electrode (type and size)
according to the work you are going to do. The electrode we
recommend because of its medium characteristic, validity for
most of the works and easiness to find, is the E-6013. Better
known as "rutile electrode". The coated electrode welding
material par excellence is carbon steel.
After confirming all the security measurements and the
equipment inspection, cleaning, preparing and holding the
welding piece, the cords are connected according to the table
indications. For a casual use of the E-6013 electrode, the
negative polarity output (marked with a -) will be plugged to
the piece through the earth clamp. The positive polarity output
(marked with a +) will be plugged to the electrode holder
clamp, which will have the working electrode connected to
its bare extreme.
The welder must wear their individual protection equipment,
using mask or welding helmet, all adequate for working and
covering every inch of their skin to avoid radiation or welding
splashing. The arc priming welding will take place. There are
various procedures, being the piece scraping the simplest
one.
Once the arc is started, the electrode will be put at an
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MMA WORK TYPES
ELECTRODE ADJUSTMENT
2,0 a 3,25 mm 40 - 140 A
4,0 mm 120 - 190 A
5,0 mm > 180 A
TIPI DI LAVORO MIG
SPESSORE PEZZO
1 - 8 mm
2 - 10 mm
2 -25 mm
5 - 50 mm
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