can occur from
the intense light and radiation from a welding arc and from hot slag
that can fly off from the weld during cooling, chipping or grinding.
Protect your eyes from welding light by wearing a
welder’s helmet fitted with a filter shade that is suitable for the type
of welding you are doing. ALWAYS wear safety glasses with side shields
or goggles when chipping or grinding a work piece if you are not wearing
a welding helmet. Eye protection is provided in an assembly of
components:
• Helmet shell - must be opaque to light and resistant
to impact, heat and electricity.
• Outer cover plate made of polycarbonate plastic which
protects from UV radiation, impact and scratches.
• Filter lens made of glass containing a filler which
reduces the amount of light passing through to the eyes. Filters are
available in different shade numbers ranging from 2 to 14. The higher
the number, the darker the filter and less light passes through the
lens.
• Clear retainer lens made of plastic prevents any
broken pieces of the filter lens from reaching the eye.
• Gasket made of heat insulating material between the
cover lens and the filter lens protects the lens from sudden heat
changes, which could cause it to break. In some models the heat
insulation is provided by the frame mount instead of a separate gasket.
What Else to Know About Welders’
Helmets?