Draper Expert 70052, Инструкция по эксплуатации

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The general rule is to grind the point’s length to match
the electrodes diameter (Fig.2).
2 FIG.
However for low amperage/smaller diameter electrodes
the points length should be double the electrodes
diameter (Fig.3).
3 FIG.
Note: During the grinding process thorium alloy
tungsten can release alpha (
α
) dust particles and in
some instances beta (
β
) and gamma (
γ
) particles. Avoid
inhalation as they act as a carcinogen.
4 FIG.
In addition to dust protection, safety goggles must be
warn to protect eyes from sparks and debris thrown up
by the grinder.
Selection of the appropriate specification electrode is
important to achieve a good quality weld. Seek guidance
if unsure of selection.
Note: When the output is AC the tip should be rounded.
7.2 TIG (TUNGSTEN INERT GAS)
SETUP – FIGS. 5 – 6
A suitable gas supply hose, fittings and pressure regulator
will be required to connect the hose to the TIG torch.
− To attach the TIG torch
(7)
to the front panel
coupling marked ‘
GAS
’
(4)
, plug in and twist to lock.
− Attach the earth clamp
(8)
into the coupling marked
‘ ’
(5)
– plug in and twist to lock.
− To connect the torch trigger cable
(7.1)
, fit the 2 pin
plug into the corresponding connection port marked
‘ ’
(2)
.
− Secure the outer ring by screwing it onto the
threaded outside part of the trigger connection port.
Caution: For shield gas always use Argon/Argon CO2 mix.
Yellow 0.9-1.2% Thorium Oxide
Long life DC welding tungsten alloy providing
improved ignition properties and a stable arc. See
HSE guidelines.
Red 1.8-2.2% Thorium Oxide
Lilac 2.8-3.2% Thorium Oxide
Orange 3.8-4.2% Thorium Oxide
Black 0.9-1.2% Lanthanum Oxide
Capable of AC/DC welding with similar properties
to Thorium. A radioactive free alternative to
thoriated tungsten.
Gold 1.2-1.8% Lanthanum Oxide
Blue 1.8-2.2% Lanthanum Oxide
Pink 0.8-1.2% Cerium Oxide
Capable of AC/DC welding with reduced slag
deposits.
Grey 1.8-2.2% Cerium Oxide
Note: The alloy content shown are a guide but generally range between 1% to 4%.