I've been "flashed" by having to work on the same table as another welder. The problem with getting flashed is you don't realize it till about 2 o'clock in the morning when it feels like someone is pouring sand in your eyes. A bad flash requires wearing an eye patch for a day or so and taking special eye drops. Luckily I've never had to do that. It's ALWAYS a good idea idea to have a Dr. check your eyes if you have the sand in the eyes feeling because you could have got something in your eye. If your eyes are sore and you start rubbing them and there's something in there, makes it even worse.
Like everyone has said, this shop needs to put up welding curtains between stations. You can get them all the way up to a shade 8 and they aren't too expensive either. No auto-dark helmet made is a clear state when not welding. Most are shade 3 that should prevent a minor flash. However, sometimes you have to lift the helmet up. Depending on what your son is welding, he may not be using a dark enough welding lens in his helmet and/or it might not be installed properly. There is supposed to be a gasket around the lens or in front of it to block any arc rays from going around it. Pulsed MIG may need a #11 or #12 lens depending on the individual welders eye sensitivity. The first thing your son should do is check that his helmet is a dark enough shade and it's working properly(auto-dark). Wearing safety glasses with tinted side shields is a very good idea to help prevent getting flashed. Your husband needs to be very careful around the sub-arc as well. Generally the arc is shielded by the flux pouring over it but if the flux runs out or is somehow interrupted, there is no worse flash than a sub-arc flash!!! Sub-Arc uses very high current and is an extremely intense arc without the flux.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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