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So I did some of my first welds with my little weldmate 70 (I've had it for ages just never used it), I read the welding for dummies book and a few others, watched some youtube videos and thought I'd make some practice puddles and beads. So far so good I was wondering a couple things:- I don't have an auto-darkening mask, just a plain mask with a #10 lens but it's so hard to see the work before the arc starts, I turned on a dual halogen work light I have but it's still tough to see something fine. Should I get an auto-darkening mask? Or a better light?- I've seen videos of people holding metal with their left hand and arc welding it to something else with their right hand. Wouldn't that be dangerous? I mean the stick is live while you weld so the electricity runs through the steel to the ground, couldn't the electricity just as well run through the person welding if his glove was damp or sweaty?I am looking for a course at my local college, in the mean time I just wanted to make sure I was safe, I couldn't find specific answers online for these two questions.Thanks again to everyone in the forum, it's a big help.Matt
Reply:Ditch the fixed shade and get a speedglas. You can get shocked by a welder! Especially if its on AC. I got hit a couple weeks ago by an old crackerbox. I was covered in sweat, welding in a boiler room in a corner and spun the rod around and bam it got me right in the neck. The welder was set at 200 amps (although it was welding like 120 amps) and I was sitting on the grounded pipe. It wasn't pretty
Reply:When stick welding the rod generally is carrying about 35 volts more or less. The work is being done mostly by the amperage the rod is carrying. 35 volts is enough to feel for sure, just ask any welder that has had to work in the rain upside down in a ditch. Or my worst was under a D8 cat in a mudpuddle in a driving rain storm. welding a belly bar back in place so the cat could be moved. Mac
Reply:As far as an AD hood, I find it helps newer students. That said when I learned years ago my instructor wouldn't let anyone use an AD hood in the beginner class. He said you would need to use a fixed hood at some point, so you ought to learn it right from the start. Can't say I disagree with that thought.As far as holding the work and welding, what you want to remember is you never want to get yourself between the "ground" and the stick/torch etc. If that happens, chances are you may become an easier path that the electrode and possibly get shocked. Note that getting shocked happens when welding. All of us have had it happen from time to time. It's almost never serious, but there's always a chance it could be serious. Take common sense precautions. Never weld with AC in the wet. Always try and keep the ground on the opposite side of you, so you aren't between the ground and the arc. Try and keep your gear dry. Always make sure your ground connection spot is clean so you get a good contact and so on..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:DC at the OCV value will shock if you are between the ground and the stinger! |
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发表于 2021-8-31 23:29:39