STAYER WELDING PLUS120GE Manual De Instrucciones página 25

Instruction on the rudiments of welding by means of coated
electrodes with a relatively moderate level of execution and on
TIG welding having a relatively higher difficulty is provided in the
present manual. Please take into account that, at a professional
level, welding is a qualified and specialized activity. Please refer
to specialized books and regulated professional training courses
for more information.
1.- Welding with coated electrode
In this class of electric arc welding, the electrode itself produced
the heat in the form of an electric arc, the protection ambient and
improves the weld coating and the filler metal when the metal
core of the electrode fuses in accordance with the weld being
made.
You must choose the electrode (size and type) that is adequate
for the kind of work to be carried out. The electrode we
recommend due to its mean characteristic, validity or the major
part of works and for being the easiest one to find, is the E-6013
electrode commonly known as "rutile electrode". The material
par excellence to weld with a coated electrode is carbon steel.
The following table may serve you as an initial orientation for
electing the type of electrode and amperage adjustment of the
operation for medium-type carbon steel of the S275 type.
After having confirmed all safety measures and inspected the
equipment, cleaned, prepared and fastened the material to
be welded, the cables are connected in accordance with the
indications in the tables. For the usual case of the E-6013
electrode, the output with negative polarity (marked -) is
connected to the piece by means of the mass clamp. The output
with positive polarity (marked +) is connected to the electrode
carrier clamp that has the working electrode connected to it by
its blank end.
The welder must put on his individual protection equipment
using a welding mask or helmet that is adequate for the work and
adequately covers any portion of his skin so as to avoid spills or
radiation.
Welding is started by priming the arc. There are various
processes, the simplest one being scraping the piece.
Once the arc ha started, the electrode is held at a distance that
is approximately equal to the diameter of the electrode itself, and
the advance of the weld is initiated by pulling backwards as if
a righthanded occidental person was writing. The electrode will
be kept in a position near (65º to 80º) to the vertical line with
respect to the horizontal line, and balanced with respect to the
weld coating center, depending on the kind of passing (initial or
filling) and the need of covering the joint to advance in a straight
line, zigzag movement or small circles. A good adjustment of the
intensity, position and advancing speed of the welding results
in a pleasant, soft sound that is similar to the sound of grilled
meat on a barbecue. When the work is carried out correctly, the
resulting weld bead will be homogeneous, with surface marks in
the shape of uniform half-moons. The transverse profile will not
be protruding and the slag formed can be removed easily.
Once the bead has been carried out, remove slag with the
hammer and brush before carrying out a possible subsequent
bead.
Special settings for S100.25B - S100.35BT series (Fig 6 - 7)
To maximize the S100.25B y S100.35BT adaptation series offers
manual adjustment for professional welders:
Fig. 2: Manual Setting of HOT START
Hot start sets the initial increase of energy when electric
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arc initializes. Control must be set depending on the type of
electrode, class of the welding joint and temperature in the
workpiece. Start adjusting knob in the middle position in order
to get an arc start without a stuck rod or with projections. If the
electrode sticks increase energy turning clockwise the knob. If
you get projections or splash please decrease energy turning
left over. If you use the machine as TIG welding put at minimum
the knob.
nº. 3: Manual Setting of ARC FORCE
Regulates the arc response when dynamic voltage drop occurs.
Depending on the type of electrode please initially setting:
Minimum (full left) for rutile electrodes (Example: E6013)
Halfway to basic electrodes (eg E7018)
Maximum (full right) for cellulosic electrodes (Example: E6010)
nº. 4: Manual control of AMP
Standard setting of welding amps. See above for details.
nº. 5: A / V Toggle Switch
Makes the display 1 amps welding or the welding voltage is
displayed.
nº. 6: VRD Toggle Switch
Makes the no load voltage reduced to standard value or reduced
value when special conditions where necessary. Note: the quality
of arc start will be reduced very slightly by using VRD.
nº.7: Remote Control de amperaje, conectar aquí el conector
cable.
Ajustes especiales para Power 200 Cel (Fig 8)
nº.1 Selector type de ELECTRODE.
Pulse Normal para trabajar with ELECTRODE de rutile y básicos.
Pulse Cel & Al para trabajar with Electrodos celulósicos y de
aluminum.
nº.2 Selector type de proceso
Pulse MMA para soldar with ELECTRODE recubierto
Pulse TIG LA para soldadura TIG Lift Arc cebado
2.- TIG welding
In tungsten-electrode electric arc welding protected by an inert
gas, the consumable material is not the electrode itself but a filler
rod of a material that similar to the material to be welded.
Compared to the coated-electrode system, the TIG system is
less productive and more difficult in return for a very high weld
quality in almost all metals and alloys thereof, including stainless
steel and situations of links with small thicknesses or without
filler material. The weld is produced without slag, projections or
fumes.
Notice: Do not use or sharpen thorium-doped tungsten
electrodes because of the risk deriving for the moderate
radioactive activity of that material. You can recognize
the presence and concentration of thorium dioxide by
the indicator band on the electrode according to EN ISO
688848:2004 (colors: yellow, red, purple and orange). Avoid
these electrodes and use substitute materials as, for example,
electrodes with lanthanum or cerium derivates (bands: black,
grey, blue, gold) that do not have any radioactive activity.
So as to correctly place the electrode on the torch it must
protrude from the nozzle about 5 mm.
As a general rule, connect the output inversely to the usual
connection of the electrode, the TIG torch to the negative
terminal of the equipment and the mass clamp to the positive
terminal.
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