Well just finished a pipe welding coarse.Boy there is a lot of ups and downs.Anyway I managed to pass the6011 root,fill and cap with a 6013 in the 6g position.TIG root,fill and cap with a 7018 in the 6g position. We used schedule 80,6" pipe. Also passed 3" stainless steel schedule 40 in the 6g. Well yeah I am pretty happy with myself.I have a question thats very very important.For some reason we filled and capped the shed 80 pipe with a weave? We didn't use stringers,like almost the entire world uses! Well I have applied for jobs,and all the weld tests want me to fill and cap with stringers.Now I am very worried as I have never used stringers in the 6g position.Should I be worried I think so I waited a very long time to get on this coarse and I'm very unhappy Any of you guys ever use a weave to fill and cap on a 6g shed 80 pipe.I seriously doubt it but I'm hoping that it is used.
Reply:Originally Posted by focus267Well just finished a pipe welding coarse.Boy there is a lot of ups and downs.Anyway I managed to pass the6011 root,fill and cap with a 6013 in the 6g position.TIG root,fill and cap with a 7018 in the 6g position. We used schedule 80,6" pipe. Also passed 3" stainless steel schedule 40 in the 6g. Well yeah I am pretty happy with myself.I have a question thats very very important.For some reason we filled and capped the shed 80 pipe with a weave? We didn't use stringers,like almost the entire world uses! Well I have applied for jobs,and all the weld tests want me to fill and cap with stringers.Now I am very worried as I have never used stringers in the 6g position.Should I be worried I think so I waited a very long time to get on this coarse and I'm very unhappy Any of you guys ever use a weave to fill and cap on a 6g shed 80 pipe.I seriously doubt it but I'm hoping that it is used.
Reply:no doubt about it , there is a bias against the weave, for right or wrong better or worse..i've heard it promotes slag inclusions but having practiced pounds and pounds of vertical up weaves i cant see how slag could remain in there...seems to me stringers have a better chance of holding slag in the toe...so go practice the stringers..there is a member here named pipefitter, i believe from ireland..does friggin gorgeous weaves with 6013..Last edited by weldbead; 02-20-2012 at 03:59 PM.
Reply:Originally Posted by weldbeadno doubt about it , there is a bias against the weave, for right or wrong better or worse..i've heard it promotes slag inclusions but having practiced pounds and pounds of vertical up weaves i cant see how slag could remain in there...seems to me stringers have a better chance of holding slag in the toe...so go practice the stringers..there is a member here named pipefitter, i believe from ireland..does friggin gorgeous weaves with 6013..
Reply:It's like this, most codes have an allowance for maximum bead width, in the area of 2.5x the electrode diameter (bare wire). So with 1/8" electrodes your looking at 1/4-3/8" maximum width. Some codes might allow for bigger, or have no restrictions at all. The issue with running weaves in 6G is it is very hard to maintain the pattern as you make the transition from overhead to vertical and back to flat, high tendency for slag entrapment here.I would also have to disagree that stringers have a much lower chance of slag inclusions, as the progression doesn't require you to travel back over the slag as a weave does. The only real chance of inclusions with string beads is if you fail to properly clean between passes. When I tested 6G sch 80 I ran stringers, as did everyone else I knew.Have we all gone mad?
Reply:Some codes and tests let you do either or, some codes only let you do stringers. All are quite possible to do. Weaving has the ability to trap more slag hands down. Especially on thick pipe in the 6 and 5g positions if you are not highly skilled in transitioning your speed. Your instructor should have told you to practice both, but most places prefer stringers.
Reply:Originally Posted by sn0border88It's like this, most codes have an allowance for maximum bead width, in the area of 2.5x the electrode diameter (bare wire). So with 1/8" electrodes your looking at 1/4-3/8" maximum width. Some codes might allow for bigger, or have no restrictions at all. The issue with running weaves in 6G is it is very hard to maintain the pattern as you make the transition from overhead to vertical and back to flat, high tendency for slag entrapment here.I would also have to disagree that stringers have a much lower chance of slag inclusions, as the progression doesn't require you to travel back over the slag as a weave does. The only real chance of inclusions with string beads is if you fail to properly clean between passes. When I tested 6G sch 80 I ran stringers, as did everyone else I knew.
Reply:Originally Posted by Zca4Some codes and tests let you do either or, some codes only let you do stringers. All are quite possible to do. Weaving has the ability to trap more slag hands down. Especially on thick pipe in the 6 and 5g positions if you are not highly skilled in transitioning your speed. Your instructor should have told you to practice both, but most places prefer stringers.
Reply:I think I better calm down,thanks guys for your views.Excellent forum loads of information on almost every subject.I'll be back
Reply:In my opinion the "weave" that you would do in the 5g position is a bit harder to master than stringers...
Reply:Originally Posted by focus267I talked to some of my friends,one man has been welding pipe since the late 80s.He has never used a weave in the 6g only the 5g. I asked my instructor could I do my test with stringers he said no way.And don't even practice them as the test is not far away.I'm new to pipe welding I just finished my coarse last Thursday.Not even tried to fill and cap in the 6g position.Now I'm sh#ting it if I had weld test if the procedures calls for it.I can't afford to buy a welder at present, as I'm renting I have no room or pipe to practice on.Am I fu##ed
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on't sweat the small stuff.... Find a job first. Then worry about practice and testing. You probably want to find an entry-level or helper job to start off. Somewhere you can get real world experience without the pressure of passing a test for a paycheck. Coming out of school in to an unfamiliar shop with unfamiliar machines, unfamiliar rods and a boat load of pressure is not a recipe for success.
Reply:when weaving in the 6g always make sure that your weaves are parrarell with gravity and not the bevels. it might take a couple tries but watching your puddle stack on itself and not undercut the top edge because your trying to weave with bevels will come with time
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