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Hello I have a few questions that I need some insight on. A little back ground info.I did my level C welding about 3 years ago didn't weld much after that. About a year ago I went and got my all position stick and flux core cwb and I have mostly been just a helper setting up machines and running cable for journeymen so my hood time is a little lacking. I have always asked questions and always gotten different answers. I really don't know what info is right.1. Welding lifting lugs. Only thing I have ever been told is to wrap and not to have a restart on or near a corner. I have always had a hard time with undercut when welding around a corner. Also when welding a vertical lifting lug how do you wrap your corners with out having a restart or welding vertical down. I have seen vertical lugs have the 2 sides connected at the bottom and top and they are not wrapped just welded into each other. Is there any bead progression or rules you have to follow for welding lifting lugs?2. Welding stiffeners in wide flanges. Since everyone normally says to me not to have a restart in a corner how do you tie in a flat fillet to a vertical fillet if you are welding a stiffener to a beam that's already in position? Do you start from the edge of the beam then weld into corner then clean the bead, restart and continue into the vertical. Or do you start from the corner, weld to the edge then clean the bead and go back and weld the vertical section? Last question has to do with learning to weld in the field. All my time welding has been in the booth at school, getting my cwb certification I found pretty easy. Although for the few times I have welded in the field I have had a hard time with just about every aspect with welding. Is it just a transition new welders go through? I can weld a vertical stringer for my root on my 3g test just fine but I go to weld a vertical T joint in the field and I get undercut or my bead has a high crown and it just never turns turns out decent. Thanks for taking a look and info or tips would be greatly appreciated.
Reply:Welding is welding. It's the same thing whether you in the field or in a booth. What is different is likely the machines your using, your access and line of sight to the weld, the material, and especially your environment. So....working in the field is different from working in booth. It may help to take a few extra measures when your welding in the field like cleaning or adjusting your machine. It all comes down to learning to read the puddle; being able to see what the puddle is doing and making the necessary adjustments. Remember your in a different environment. So put things in your favor and most importantly get comfortable. You might have a few butterflies when your on the job but, burn a few nice beads and that will go away and you'll be jones'n to get to your next weld.As far as lugs go....on most welds stopping and starting in the corners should be avoided if possible. It's not always possible. Non fusion usually exists in the stops and starts of welds and corners and so forth are often stress points ect. I usually call for them to be wrapped or boxed. Theres often debate where the drawings will not call for a weld there. Check the drawings and get with your QC. In my opinion your better off welding vertically up and wrapping around the corner to the end of the weld.
Reply:Yeah booth welding at eye level will look totally different than welding vertical up at floor level looking down at it.Same goes with doing it above your head looking from below.Start practicing in all these weird positions at home with the machine you use in "the field."Dave J.Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~ Syncro 350Invertec v250-sThermal Arc 161 and 300MM210DialarcTried being normal once, didn't take....I think it was a Tuesday.
Reply:Wrapping the corners is a very good habit to get into! Sometimes it just can't be avoided. Just like ending the weld on the edge of a plate. You're better off to end the weld in the center, but again sometimes it can't be avoided. Feathering out your starts and stops is good practice too. Think of wrapping your corners like welding pipe, you have to change the rod angle the whole time.It all comes with more hood time. Attached ImagesDont pay any attention to meIm just a hobbyist!CarlDynasty 300V350-Pro w/pulseSG Spool gun1937 IdealArc-300PowerArc 200ST3 SA-200sVantage 400
Reply:Originally Posted by CEPWrapping the corners is a very good habit to get into! Sometimes it just can't be avoided. Just like ending the weld on the edge of a plate. You're better off to end the weld in the center, but again sometimes it can't be avoided. Feathering out your starts and stops is good practice too. Think of wrapping your corners like welding pipe, you have to change the rod angle the whole time.It all comes with more hood time.
Reply:Oh I don't know, it was the first picture I came across with the stop in the center. That is the coupon bender I built with scrap laying around, all I had to buy was four 5/8-inch washers to build it. Attached ImagesDont pay any attention to meIm just a hobbyist!CarlDynasty 300V350-Pro w/pulseSG Spool gun1937 IdealArc-300PowerArc 200ST3 SA-200sVantage 400
Reply:Right on guys thanks. Does anyone have or know of any vids that show any corner wrapping? Been looking around youtube have not had any luck. |
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