6G stainless pipe pressure test tips.

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Hey everyone! I'm new here and I've been welding for about 6 years now.  I obtained my Alberta pressure ticket this past October and the shop I'm working for are upgrading all the pressure welders tickets.  The next one to tackle is stainless pressure. The root is rolled MIG hard wire 316 I believe, with a stainless stick fill and cap. The root is going smooth but the fill passes are being a real bastard.  I'm using 3/32 309-17 rod (I think) I was playing with my amperage from about 60-70 amps attempting to run stringers, tried a lil weave...Didn't seem to help to much. Ive been searching on forums trying to learn as much as I can on stick welding stainless and I found this video quite interesting  . I read the forum where the video was posted and he was using a remote to fluctuate his amperage as he went through the weld. Granted this is a rolled position, I found his technique interesting. He used a stepping motion of lengthening and shorting the arc to manipulate how much heat he put in or to help the weld flow out nicer? How would using a remote out of position such as the 6G help? The dude in the video said he always uses a remote and I trust his word by how well his welds turned out. The test coupon will be 2" sch 160. Any help or advice is welcome!!Thanks Chance
Reply:I think that guy's technique is pretty darn handy. Though I'm sorry I can't give you any tips. I don't stick weld much.. it's all tig here.
Reply:How's your stainless on plate?  Wouldn't go near 2" pipe till had confidence on plate, both stringers and weave.  I've always used one hand to steady rod tip.  Wouldn't be any good trying to play with remote in 6g.  Running out of position stainless is about anticipating the base metal heating up during each individual rod.  Basically need to keep heat low, aim at starting point to ensure nice tie-in, slowly straighten out and be ready to increase speed after as little as 1/2 inch of rod.
Reply:That reminds me, when I had to do a 309 stick break plate, I was told to start my tie in back over the previous weld instead of just ahead of it. Bring it to the crater and pause for a second, then start moving. And it was hard to run more than half a rod before the thing got red hot and wouldn't do anything.
Reply:Originally Posted by OldSparksHow's your stainless on plate?  Wouldn't go near 2" pipe till had confidence on plate, both stringers and weave.  I've always used one hand to steady rod tip.  Wouldn't be any good trying to play with remote in 6g.  Running out of position stainless is about anticipating the base metal heating up during each individual rod.  Basically need to keep heat low, aim at starting point to ensure nice tie-in, slowly straighten out and be ready to increase speed after as little as 1/2 inch of rod.
Reply:The video I posted in the first post, he tapers off the heat at the end of weld to prevent getting the pinhole in crater like you stated. He said that you will have a hard time passing xray from not letting off the heat at the end. Havent tried it so I cant say yet.
Reply:Originally Posted by chance_hogelieThe video I posted in the first post, he tapers off the heat at the end of weld to prevent getting the pinhole in crater like you stated. He said that you will have a hard time passing xray from not letting off the heat at the end. Havent tried it so I cant say yet.
Reply:What specific problems are you having? What order are you doing them in by quadrant? Are you giving a slight drag on the rod uphill? Rod is in an oven before use?
Reply:Yes you can use remote in 6g position. There is absolutely nothing ankward on doing so. You just need to have more handy remote. Here is link where you can see what kind of a remote i use.http://www.google.fi/search?q=kemppi...8qL9Xi513gM%3A
Reply:Yes you can use remote in 6g position. There is absolutely nothing ankward on doing so. You just need to have more handy remote. Here is link where you can see what kind of a remote i use.http://www.google.fi/search?q=kemppi...8qL9Xi513gM%3A
Reply:Here is a better link, I was playing with my phone on those first answers and added wrong link.. Sorryhttp://webshop.industriacenter.fi/pr...mppi-pituus-5m
Reply:im welding pipe up in 1/2 quadrants, inclination is straight on to slight forehand, rods are not in a oven and if they have to be what temperature?
Reply:ya! that remote would be great! I wonder if I could adapt one to fit my lincoln 350 invertec
Reply:Originally Posted by chance_hogelieim welding pipe up in 1/2 quadrants, inclination is straight on to slight forehand, rods are not in a oven and if they have to be what temperature?
Reply:The test coupons are mild steel, forgot about that small detail. Been practing today and im ready to pull my hair out, ill have to try the slight backhand and get the rods in the oven as well. What about arc force? I found the hot start feature was helping as well, ive been practicing on plate to help figure out my settings n such current setup is 65amps arc force is about 40 hot start is 40 as well. Appreciate the tips!!
Reply:Originally Posted by chance_hogelieThe test coupons are mild steel, forgot about that small detail. Been practing today and im ready to pull my hair out, ill have to try the slight backhand and get the rods in the oven as well. What about arc force? I found the hot start feature was helping as well, ive been practicing on plate to help figure out my settings n such current setup is 65amps arc force is about 40 hot start is 40 as well. Appreciate the tips!!
Reply:Also the rod im using is 309-17 and I got some 309-16, much of a difference? Cant remeber the manufacturer of ethier rods at the moment. I found that increasing travel speed helped a lot, have to move a hell lot faster then with 7018 to get to flow nicer.
Reply:Denotes positional application. 16 is can't be run in 4, can run all other positions. 17 is 1 and 2 position. No 3 or 4.
Reply:Originally Posted by chance_hogelieya! that remote would be great! I wonder if I could adapt one to fit my lincoln 350 invertec
Reply:Originally Posted by fullmetalfabDenotes positional application. 16 is can't be run in 4, can run all other positions. 17 is 1 and 2 position. No 3 or 4.
Reply:Originally Posted by taz00This is not entirely accurate, both are classified as all position electrodes. Unless of course he is running 4.8mm and larger size (which I highly doubt especially in his application) in which case it is recommended to stick to flat and horizontal positions.As far as the differences this is taken from SFA 5.4