Inconel 625 On Pipe

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I originally had a highly detailed description and technical mess of Information and techniques I was using to overcome my problem, but.. The COMPUTER FROZE. So, I'll just ask the question. I added a picture, and this is my weld at its best (When everything is going really, really well.. And take my time, follow all cleanliness procedures, waste a great deal of Argon, and is 'intune' with my heat." There still are some problems, but whatever) But believe you me - I can make the greatest mess of this stuff!!! haha Inconel 625. I was taught with the "Dip technique"; 3/32 filler metal, 58 to 62 amps; Usually 20 to 25 flow purge (Basing upon stainless purge settings from printout. along with appropriate size hose) Flow from torch is usually the same. Cleanliness - cleanliness; and "Round" the land of the pipe. I was figuring that, to act as a 'heat sink' so that the inconel wont start getting too hot and flow like lava - Ultimately building up on the inside of the pipe, more-so than what is wanted. Regardless, I am still trying to make "Sense" of this Inconel. Stainless started making sense, and suddenly it just "clicked" and I was on my way. I'm practicing Inconel, and I'm still trying to figure out absolutely every single variable. Sadly, even though I have the Qualification ticket for inconel, the training facility just give bone-stock basics. But, my Stainless is coming along quite perfectly! lolMy Question:  What is the best technique for dealing with a "Larger Gap".Second Question: What other techniques other than 'dipping' can be used? Third Question:  Regardless of how immaculate clean the tig filler metal is, there are certain instances where I may get a "Soot" like Mark on the root pass when looking inside. Does anyone have a good picture of what is "Acceptable" or how the "Coating" on inconel is supposed to look?Fourth Question: When Dealing with both stainless and inconel - and I always hear about flow & purge, along with too much flow creating a turbine of argon, etc .. How exactly does a person set their flow and purge? Cause going by a chart saying "Use this Hose ID size and This "Flow Rate", just doesn't cut it. Attached Images
Reply:I'm not sure why you would weld a steel pipe with inconel wire.Miller Dynasty 700Miller Dynasty 200Miller 350pMiller 252Hobart Handler 187Lincoln Weld pack 180Victor O/AHypertherm 1250Hobart Airforce 500IPractical cnc
Reply:I have welded exhaust reversers made of Inconel  and had good results with the same technique as stainless or even carbon steel......The stuff welds about the same as stainless to me?  I don't weld it everyday so I can't give you any secrets since I don't have a problem with it......You should always keep your heat down with stainless and Inconel......As far as gaps go I myself use a filler size that lends itself to the larger gap (staying with an intimate fit is always desirable)  I leave the filler in the argon flow and weave back and forth with the heat......Depending on your gap a couple passes may be necessary?  Miller Dynasty 350Twenty Six HammersThree Crow BarsBig Rock
Reply:Originally Posted by REsFieldI originally had a highly detailed description and technical mess of Information and techniques I was using to overcome my problem, but.. The COMPUTER FROZE. So, I'll just ask the question. I added a picture, and this is my weld at its best (When everything is going really, really well.. And take my time, follow all cleanliness procedures, waste a great deal of Argon, and is 'intune' with my heat." There still are some problems, but whatever) But believe you me - I can make the greatest mess of this stuff!!! haha Inconel 625. I was taught with the "Dip technique"; 3/32 filler metal, 58 to 62 amps; Usually 20 to 25 flow purge (Basing upon stainless purge settings from printout. along with appropriate size hose) Flow from torch is usually the same. Cleanliness - cleanliness; and "Round" the land of the pipe. I was figuring that, to act as a 'heat sink' so that the inconel wont start getting too hot and flow like lava - Ultimately building up on the inside of the pipe, more-so than what is wanted. Regardless, I am still trying to make "Sense" of this Inconel. Stainless started making sense, and suddenly it just "clicked" and I was on my way. I'm practicing Inconel, and I'm still trying to figure out absolutely every single variable. Sadly, even though I have the Qualification ticket for inconel, the training facility just give bone-stock basics. But, my Stainless is coming along quite perfectly! lolMy Question:  What is the best technique for dealing with a "Larger Gap".Second Question: What other techniques other than 'dipping' can be used? Third Question:  Regardless of how immaculate clean the tig filler metal is, there are certain instances where I may get a "Soot" like Mark on the root pass when looking inside. Does anyone have a good picture of what is "Acceptable" or how the "Coating" on inconel is supposed to look?Fourth Question: When Dealing with both stainless and inconel - and I always hear about flow & purge, along with too much flow creating a turbine of argon, etc .. How exactly does a person set their flow and purge? Cause going by a chart saying "Use this Hose ID size and This "Flow Rate", just doesn't cut it.
Reply:Christ guys, isn't anybody of use on this forum? It's carbon because aside from work, I practice at home, and carbon is all I buy. And no it is not undercut. Believe you me.
Reply:confused here you asked about inconel and post a picture of a carbon pipeMiller Xmt 350Lincoln Ln-25Ahp 200xSmith Gas Mixer AR/HTig is my Kung FuThrowing down dimes and weaving aboutInstagram http://instagram.com/[email protected]
Reply:LOL ,Try the on the wire technique stay away from dipping if u can , try to purge the inside of the tube when welding a root with argon see how it works for ya , keep a move on and let the puddle do the work , ive found most charts are bogus and usually only good for shoveling around on a desk or getting burned in the tool box drawer , keep a good head about it and stay calm lol For the most part it usually comes out slightly dull kinda dirty looking when i have welded it , its not steel if your gonna purge use some duct tape tape the ends off leave a little hole on the top side shove a hose in and let er flow around 15 - 20 cfm depending upon sizes of tube u should be okay but my main question would be are you welding stainless with inconel ?keep practicing and see what it comes up with , more pictures would be nice btw pm me if u wannaI forgot how to change this.
Reply:Thankyou guys, everyone for the replys. What I may do, is I'll swing by one of the training centers on next days off and get a demo from one of the instructors. The Picture above is a Carbon Pipe, but the Root pass is Inconel. Carbon piping is alot cheaper for me to buy and practice at home with. When I first was ticketed for inconel, It was a metal I never welded with before. It was new, fun, exciting, and challenging. Back then, I was sloppy, un experienced, and I didn't follow procedures for cleanliness. But, I got the ticket that day. Like what LawsonWeldingLLC said about keeping a good head about it and keeping calm - I think right now, that's probably my problem. Trying to hone-in on something expecting it to be perfect.Last edited by REsField; 02-26-2011 at 12:17 PM.Reason: Did not include an explanation for reason why picture was of Carbon pipe and not Inconel pipe. (Carbon Pipe Inconel Root)
Reply:Originally Posted by REsFieldChrist guys, isn't anybody of use on this forum? It's carbon because aside from work, I practice at home, and carbon is all I buy. And no it is not undercut. Believe you me.
Reply:Fill the larger gaps as you would do with stainless. 625/718 Inconel is pretty difficult to grasp the first time around because it's pretty hard to see the puddle, all the little floating things you see in the puddle don't worry about it, it just welds that way. As far as the black soot, is your tungsten sharp as free of contaminants? Technique? I prefer feeding my wire into the puddle, not just a little dab. Always purge inside and out. Set your flowmeter to roughly 15cfm and just let it sit there if you're not too comfortable with back purging, argon is heavier than air so you can basically kind of move the tube around to get all that oxygen out. torch would be the same. I would set it roughly at 15-20cfm with a bigger gas lens and ceramic cup.
Reply:I cannot tell anything from that photo. Can you back away from it just a little.OK...ok....I think I see now. It is the inside of a pipe or tube?I do not see a problem. Could be a little hot as the weld looks greyish.Are you just trying to show us how good you can weld? I do not see a problem.All that slag on the end confused me.Looks like it was burned off? Makes me wonder where the tube or pipe came from orwhat it may have been used for.When you make a statement like, "Christ guys, isn't anybody of use on this forum? It's carbon because aside from work, I practice at home, and carbon is all I buy. And no it is not undercut. Believe you me."It is sort of rude.Forum members do not owe it to you to help you. They provide feedback and opinions because they are interested in helping.Last edited by Donald Branscom; 03-01-2011 at 10:25 AM.AWS certified welding inspectorAWS certified welder
Reply:It was rude of me, yes. I apologize for my brash behavior, disdain & contempt, and especially due to the fact that I - being new and ignorant in relation to the wealth of information & experience/knowledge of its users of this forum -  my poor judgement.  The reason why I posted the picture was because quite often, I'll bring out Welders who want to learn a certain thing like getting the feel for Tig Welding, or Help on 6010 roots for piping, or discuss about techniques, or discussion about the Weld, or any reason. Often, I just need to see 'Where they're at' or 'What information they know - or have', and from there, once I get an idea of their level of 'feel', how their technique works for them, their skills & ability, or even if I can see the things in the weld that 'they see' and notice what to look for and how to manipulate the molten metal to a desired effect - Suddenly, I have a strong sense on where to begin teaching or introducing ideas, or helping them learn and progress.