barry , you need to search this topic there have been many replies to this already that are very good . you would get good info. to help you . good luck . willie
Wrap the ground around the pipe about 4 or 5 times near the area to be welded then attach it. If that dosent help change the direction of the wrap.
wraping the ground is a good way to eliminate the arc blow . changeing direction of the wrap sometimes helps ,use AC, change polarity, make a series of small tacks and weld towards them. Make your first pass with a smaller rod ie: 3/32. Sourdough is probably a pro at this as he most likely works with drill pipe alot.
Thanks for the replies guys. I'm not even sure if I'll get the bid. It was the early eighties since I've welded drill pipe and I remmember how the arc freaked out and I just changed direction of welding but I don't recall ever finding a good method of stopping the arc blow. I will search the forums though. Again thanks for spending time to reply.
i jsut got done building 2 sets of racks run a root of 6010 reversed polarity hot and then run a 7018 cap i've tried to wrap and reverse wrap and nuthing worked might of just been the pipe but when i reversed the polarity and burned it hot it seemed to flow better if you're gonna burn it hot make sure your gaps are pretty tight to prevent blow through what did you bid on the racks i bid mine at 1800 a set i did them myself 2 sets in 2 5 day weeks
my bid was 30 hours for 1 rack, no material handling fee. They provide the pipe. I found reliable info that using 8010 can help with arc blow. Also tacking entire rack together, then start assembly of other racks. After all four racks are assembled start welding on first rack that was assembled. I understand that this alleviates some of the magnetism in pipe. I have yet to try it. Maybe I can tell you what I find out later.
Lot's and lot's of heat. Have a weed burner, and plenty of propane......oh, and big low hyd rod!
Best and easiest is to use an AC transformer/buzz box with work clamps on both cables and run AC weld current through the structure/rack, from one side/end to the other, while welding. Dead short - 100% duty cycle time. Volts will be about 1 volt.
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