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Straight answers to the questions people ask most when choosing and looking after spare parts for a heavy-duty powered air welding helmet.
The outer protection plates wear fastest, because they take spatter and scratches. After that come the sweatbands, which absorb sweat and break down, and the head and neck protectors, which wear from heat and washing.Filters for the powered air unit, the face seal and the battery are all consumable too. Keeping a few spare outer plates and a sweatband means you can stay protected and comfortable without waiting when one is spoilt.
The head and neck protector covers the areas around the helmet shell and stops arc light, spatter and fume reaching your skin. They come in fabric, flame-retardant fabric and leather, in different sizes.Leather tends to last longest in heavy spatter and overhead welding, while fabric is lighter and cooler. Pick the one that matches the heat and spatter at your workplace, and make sure the size gives full coverage without pulling on the helmet.
Change it when your view is reduced by scratches, spatter marks or pitting, or when it is cracked or warped by heat. A damaged plate also scatters light, which tires your eyes.Heat-resistant and scratch-resistant plates last longer in tough conditions. Always fit the plate the way the manual shows and check that it seats flat so that no spatter can get behind it.
A magnifying lens fits behind the welding filter and makes fine detail easier to see, which is helpful for close TIG work or when your eyesight needs a little help. The strength is measured in diopters, and a higher number gives more magnification.Start with a lower strength and move up only if you need to. Too much magnification makes your working distance awkward, and anyone with a prescription should check with their optician first.