General Instructions For Use; Specific Instructions Mma Welding (Shielded Electrode) - STAYER WELDING M40.18Multi Manual De Instrucciones

STEP 1: KNOWING TO NAVIGATE THROUGH THE MENUES
Use buttons of group No. 17 to select the setting parameter
and to change the values thereof. As an orientation to know the
menu the equipment is in, it will show a luminous indication or a
menu number on the seven-segment red display.
STEP 2: PROGRAMMING SETTING PARAMETERS
Once the specific requirements of the work to be carried out are
known, adjust welding values that will appear in the following
order:
1. Main working current.
2. Main working voltage.
3. Weld bead completion current.
3. Weld bead completion voltage.
5. Gas discharge time after welding has finished.
6. Gas discharge time before starting to weld. Menu 903.
7. Welding base current proportion. Menu 906. (Recommended
initial setting: 35)
8. Welding pulse duration. Menu 907. (Recommended initial
setting: 00:2)
9. Welding base current duration. Menu 908. ((Recommended
initial setting: 00:4)
10. Pulse increase duration. Menu 909. (Recommended initial
setting: 00:0)
11. Pulse decrease duration. Menu 910. (Recommended initial
setting: 00:0)
12. Wire discharge ending voltage (Burn Back). Menu 911.
13. Duration of wire discharge ending voltage (Burn Back). Menu
912.
14. Distance compensation of the contact tip. Menu 913.
Note: Functions 7 to 13 appear in italic and bold.
MIG/MAG SPECIAL SETTINGS
Depending on the transfer mode, for instance when the user
wishes to work with short arc (coarse drop, short-circuit) or
wishes to work in long-arc mode (fine drop, spray, pulsed), it is
possible to act on two detail setting controls.
Amperage: To carry out fine adjustment of overall power, master
amperage control located on the upper portion of the front panel
of the spooler, buttons No. 12 and No. 13 may be actuated.
These controls are duplicated on the main machine, group No.
17.
Voltage: To carry out fine adjustment of the feature of the arc,
actuate voltage master control No. 13 located on the lower
portion of the front panel of the spooler. When turning the control
to the left, voltage will be reduced whereby the arc is closed
and deposition in short-circuit mode will take place with high-
penetration, minimum projections and a characteristic sound.
According voltage is increased, there will be a tendency to high-
performance spray welding mode with a more silent sound, You
are recommended to start regulating voltage just at the middle
point indicated by a white point within the scope marked in the
synergic mode.
Wire speed: The amperage control modifies at the same time the
wire discharge speed in accordance with the working conditions
indicated to the machine. When, due to special circumstances,
it should not be possible to adjust the exact speed, a speed
increase or decrease may be selected by adjusting the wire
diameter to the size that is immediately above or below that
which is really installed.
Pulsed arc welding up to 10 Hz: It serves for improved welding
on any kind of material and especially aluminium. Heat and filling
of each drop deposited on the bead is accurately controlled,
so that a bead of a maximum quality may be made on pieces
having minimum thickness. When the machine is correctly set,
ENGLISH
40
work may be controlled visually and based on the sound of each
pulse that fills a new drop onto the welding bead.
Start trying with a rest of a material that is similar to that of the
work to be carried out. Apart from base voltage and amperage
(according to thickness, kind of material, position and kind of
bead), the other three parameters to be set are base amperage,
pulse duration and the duration of the support base of the arc.
Regarding any material, start with the recommended values
more above and with deactivated slope. Adjust the distance
between the nozzle and the surface, to obtain clean pulses.
Adjust the manual advance in order to distance the falling of
drops produced by the discharge of continuous wire.
When everything goes correctly, you will note a stroke of sound
like a puff similar to that of a starting steam locomotive with a
sound increase (corresponding to deposition of a drop) each half
second (approximately). The bead will be clean and of stable
width, with suitable penetration and a very elegant look, with
parallel half moons separating each deposited drop in the weld
puddle.
SPLASH CONTROL
Electric inductance 30 allows reducing splashes from the wire
welding process. Try empirically by raising or lowering the control
until achieving the best result.
4.4. Limits regarding the size of the workpiece
The main restriction regarding the piece to be welded is its
thickness which is limited by the power of the equipment.
At increasing power, you will be able to make correct welds (with
suitable penetration of the welding bead) on pieces of increased
thickness.
The following table may serve you as an orientation:
PIECE
THICKNESS
1,5 - 5 mm
2,5 - 5 mm
5 - 12 mm
WIRE
0,6 mm
0,8 mm
1,0 mm
1,2 - 1,6 mm

4.5 General instructions for use

4.5.1 Specific instructions MMA welding (shielded
electrode)
In this class of electric arc welding, the electrode itself produces
heat in the form of an electric arc, the shielded environment,
and it improves the weld puddle and the filler metal itself as the
electrode's metal core progressively melts as welding is carried
out.
You have to choose the electrode (size and type) that is suitable
for carrying out the work to be performed.
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KINDS OF MMA WORK
ELECTRODE
2,0 - 3,25 mm
4,0 mm
5,0 mm
KIND OF MMA WORK
PIECE THICKNESS
1 - 8 mm
2 - 10 mm
2 -25 mm
5 - 50 mm
SETTING
40 - 140 A
120 - 190 A
> 180 A