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4 1/4" x 2" Anti Spatter Lens
Practical answers on choosing, fitting and looking after the small-format shaded, cover and back lenses used in many fixed-shade helmets.
The usual rule of thumb is to start with a shade that is too dark to see the weld zone, then step lighter until you can see the work properly. The important limit is that you never go below the minimum shade for your process and current.Before swapping shade, check the simple things: a dirty or spattered cover lens, poor lighting, or a pitted back lens can all make a correct shade look too dark. If you do change shade, use a chart for your own process and current, or ask your supervisor or the equipment maker, rather than guessing.
It can, but only with the right eyewear. When eyewear fitted with welding filter lenses is worn under a helmet, the shade in the helmet may be reduced, so long as the combined shade of the eyewear and the helmet lens still equals the value the chart requires.Ordinary tinted safety glasses and sunglasses are not welding filters and do not count towards the shade. Do not reduce the helmet shade unless the eyewear is marked as a welding filter and you have worked it out against a recognised chart for your process and current. Check the helmet and eyewear instructions and your risk assessment. If you are unsure, use the shade the chart gives for the helmet lens alone.
No. The filter lens is there to cut down arc radiation. Eye injuries commonly come from slag, grinding and chipping, so eye protection is recommended even after the arc has stopped. Goggles are also advised when chipping slag or wire-brushing welds.Flip the helmet up for these jobs only if you are wearing suitable impact-resistant eye protection with side protection underneath. Never grind with just a tinted weld lens in front of you unless the maker's instructions and your risk assessment say it is suitable.
Oxy-fuel flames can give off a strong yellow light. During gas welding or cutting where the torch produces a high yellow light, it is desirable to use a filter lens that absorbs the yellow (sodium) part of the spectrum.So a lens made for gas work may be tinted differently from one meant for arc work, even at a similar shade number. Check what the lens is intended for, use the shade the chart gives for your gas process and plate thickness, and follow the maker's instructions.