Ferm FWM-45/140 Gebrauchsanweisung Seite 10

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b. The electrode
• The electrode consists of a metal core enclosed by a coating. The coating has the most
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important purpose of protecting the welding pool and the transferring droplets against
oxygen and nitrogen in the surrounding air. The electrode melts during welding. part of the
coating vaporises so a protective gaseous shield originates.
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part of the coating floats on the welding pool (it is lighter than steel) and also protects the
cooling weld. fter cooling this coating becomes a solid but easily removable slag on the
welded joint.
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• Handle the electrodes with care so the coating is not broken. Make sure that the electrodes
are thoroughly dry, so store them in a moisture-free place.
• It is of great importance to use the right electrode to make a good and strong welded joint.
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universal electrode will in many cases be suitable for your work.The electrode packaging
mentions in which positions welding can be done with the electrodes concerned (above the
head, downwards, etc. bearing in mind the speed of melting of the electrode). Separate
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electrodes are commercially available for the welding of types of stainless steel and cast iron.
Consult your dealer about purchasing the right electrode.
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c. Protective clothing
Wear thoroughly covering clothing so that the likelihood of the skin being burnt by ultraviolet
radiation or splashes of metal is minimised.
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Preferably wear cotton overalls, welding gloves and safety shoes. Make sure that welding
spatter cannot end up in gloves or shoes.
FIN (leather) welding apron stops burning and sparks damaging overalls.
d. Face protection
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Fig. 2
Use a good welding mask with (dark) welding glass and protective glass. Check that both
glasses are correctly fitted (well-fastened and not allowing any sunlight in).
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The welding mask protects the welder against radiation, heat and weld spatter released during
the welding process. This also reduces the inhalation of welding fumes. The invisible ultraviolet
rays cause so-called "welder's flash". This already originates after a few seconds of looking into
the electric arc.
void the effects of this radiation and high temperatures on the face and other exposed body
parts such as the neck and arms.
Protect yourself against the dangerous effects of the electric arc and keep persons who are not
participating in the work at least 15 m from the arc.
Persons or assistants working in the vicinity of the electric arc must be advised of the hazards
and they must be equipped with the required protective gear. If required, set up protective walls.
e. Working environment
• Ensure a well ventilated working environment. Gases are released when welding that are a
danger to your health.
• Remove all flammable objects from the working environment. Welding causes sparks and
hot metal.
• Make sure that cooling water is present in the vicinity of workplace. Do not leave just welded
(hot) workpieces unattended in the workplace. Cool the workpiece before leaving the
workplace.
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