Re: D1.1 welding certification.....

Posted by 135 Fan on February 24, 2009 at 17:54:53 from (68.149.56.30):

In Reply to: D1.1 welding certification..... posted by Sparktrician on February 24, 2009 at 11:51:46:

I'm not familiar with that certification but I never really paid attention to the actual desigination of my tickets. I probably have it or something equivelent to it. Anyway, for overhead there's a couple of things that can help you. First make sure you are comfortable and can see what you're doing really well. It's not good to be stretching your arms as far as they can. If you can use something to rest your other arm on to help control the stinger is a big help. Trying to do a one handed crash and burn overhead test weld is very difficult. A lot of test booths have an arm to hold the piece and also a table or other arm on the same pipe support. Slide the table/arm up so you can rest your arm on it. When doing pipe a lot of guys will stick a file in the end of the pipe to rest their arm on or clamp a vice grip on for the same reason. Don't turn your heat down too much because you need the arc force to push the puddle up to get good penetration. Almost the same heat as flat position. Keeping a little closer arc and not as much angle on the rod can help to hold the puddle up and don't go so slow that the puddle gets too big. Don't be positioned right under the weld unless you want hot slag/grapes dripping on your arm or back of your neck. If you go to the Hobart institue or other recognized training center, they will be able to help you out a lot. Oh, and make sure to adjust your helmet so you're not having to twist your head funny trying to look up. Almost all helmets have an adjustable stop for how far the helmet comes down. You don't want your helmet resting on your chin so you have to tilt your head all the way back to see what you're doing. Wrap your stinger cable around the arm your piece is on to hold it up so you don't have the weight of the cable pulling your arm down. Some guys will loop it over their shoulder. Leave a long enough loop of free cable to the stinger though. You don't want the cable to go tight as the rod burns down. Strike your arc ahead of where you want to start the weld and get the arc established, then move to the starting point and weld over your arc strike. It's not easy to strike an arc right where the weld begins and not have a flaw in the start. Some other welders on here will probably have some more tips that could help you as well. Hope this helps. Dave

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