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Chapter 2: Safety
is chapter discusses matters relating to the safety of the individuals using this machine.
When used properly, this laser welding machine is safe and reliable. It is necessary, however, that the
operator is informed about the precautionary standards so as to avoid possible damages to them-
selves or to the machine.
LASER RADIATION
Laser radiation is an electromagnetic emission with micrometric wavelengths that are placed in the
far infrared (CO2 laser), in the near infrared (laser at Nd-YAG, Nd-YVO4), in the visible (laser He: Ne or
Argon), or in the ultraviolet (excimer laser) ranges. Laser radiation produced from the LZR machines
is invisible and therefore can be very dangerous, especially dangerous to eyes and skin.
NOTE
Direct exposure of a laser beam can provoke irreversible damages to eyesight
and vision
To avoid permanent damage to the operator and others nearby, it is necessary to follow some pre-
cautions.
Everyone in the near vicinity of the machine and who may be exposed to harmful levels of laser radia-
tion, must be informed when the laser is active.
Due to the high power of the laser generated in this machine, there is a potential that the laser may
reflect off of welded pieces. If this happens, the reflected light can be potentially dangerous for the
eyes and the skin. As stated previously, the laser generated in the LRZ welder is invisible, and there-
fore it is not easy to identify if the laser is reflecting off the piece, nor is it easy to know where the
laser may be travelling once reflected.
NOTE
It is crucial to be protected from the reflected light beams, because they can be
sufficiently intense to create permanent damages to the eyes or to the skin
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