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i've been working on some aluminum tanks for the racecar i drive. working in 0.063" 3003 aluminum sheet and some 1-1/4" 0.058" round tubemy problem has been warping of the sheet metal as i'm welding. so i've resorted to placing damp towels near the area being welded in order to prevent the crazy warping issues i've had. it works fantastichere's the question... of course i wring the towels out so that they are only damp. but as the work progresses i inevitably end up with some moisture on my TIG gloves. what are the dangers of the moisture (which is minimal) and the current from the arc?i mean i want to have smooth flat tanks with nice welds... but i also don't wanna end up like a hot dog!
Reply:You're likely to get zapped if there's any flaws in the insulation of your TIG torch handle. Speaking from experience, the High frequency that starts and/or maintains your AC arc will sting you really bad if you're unlucky. I've had a cracked torch zap me good, right through dry gloves. the HF arc will burn holes right through TIG gloves if you give the electricity a path to ground; like the knee you have pressed against your welding table....It'll burn through your pants as it arcs from your knee to the work bench...A pair of thin rubber gloves, inside your TIG gloves, may help keep you from getting electrocuted. But best to avoid getting your gloves wet in the first place. Maybe a plastic bag you can use as a temporary over glove when handling the towels? Something waterproof, but loose so it's easy to slip on and off.Benson's Mobile Welding - Dayton, OH metro area - AWS Certified Welding Inspector
Reply:also it should be noted that very rarely does it ever become fatal. I've probably been zapped over a dozen times via tig HF or sometimes getting the actual arc.It will give you a nasty shock but unless it goes across your heart or you decide to leave it on for awhile it usually wont do much else.Dry gloves help as does wearing rubber inner gloves but that hf will go right through the side of the torch. People weld under water and live to tell about it.
Reply:Lost count of the number of times the high freq has gotten me. Hard to keep your gloves dry in the summer when it's hot, and the salt in sweat makes it an excelent conductor. You'll usually find a little white spot where you got zapped. A good zap usually leaves me feeling a little dazzed for a good half hour. All the zaps I've had have gone from my hand to my elbow where it rests on the table. I usually try to have a couple pairs of gloves so I can cycle through them to let them dry out.
Reply:Originally Posted by Metarinka People weld under water and live to tell about it. |
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发表于 2021-8-31 23:39:10