Stainless Nipples :)

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I have to make 4 nipples for a prototype unit.  Everything is 304 stainless.  These tubes need  a ring on them for a heater hose to push and clamp on.   I tried tig, but am not near steady or consistent enough.  So I went to the LWS and picked up a 2 lb spool of .030 308L because that is all they had.  It should be fine.  2 Lb spool will not go on my LN9-GMA, so I put it in the spool gun.  After the usual feeding problems, I got things working.  This is the first job for my spool gun since I bought the stuff to make it fit my V 350.  Pulsed spray is what I wanted to do.  I have made these nipples once before on carbon steel.  The stainless didn't make it much different.  I made up the jig to hold the gun in a few minutes.It took quite a while with positioner speed, wire feed speed, machine settings..... To get what I was looking for.  In the end I missed by a little, but I think the customer will accept these. They are prototypes.  If this flies, there will be 300 units a year.  Each unit needs 2 nipples.  I took the time to make the jig in case they like them.General Set up.  V350 advanced panel, Pulsed spray mig some attempts with tig.  Not even close to what I wanted.  Scratch that idea First attempt, Just a little too hot.  I cut the heat in half.  Machine and wire feed speed. My spool gun has no #s for wfs, so I just have to wing it.  Set the machine where I want it, then adjust the wfs for a good bead with proper arc length.Waay too big, but at least I have direction.  Faster RPM makes for a narrower, lower profile bead.  Wave form (background current and pulse speed) makes a big difference too.  Last edited by David R; 03-19-2009 at 06:24 PM.Real world weldin.  When I grow up I want to be a tig weldor.
Reply:I GOT IT!!Specs. I missed a little, but OK for me.  .015 over size in OD, .024 to narrow on width.  I will write down all the settings on the blue print so I can do it again if needed.  I will take them to a belt sander and try to get the .870 OD.Close upAll attempts. I had to have it right before I screwed up the 5 they gave me to do.  One of the 5 is a spare.This took me most of the morning.Thanks for lookingDavid Last edited by David R; 03-19-2009 at 06:22 PM.Real world weldin.  When I grow up I want to be a tig weldor.
Reply:We have a machine at work that does this. Just insert pipe and that's the result.Picture of the machine: http://www.ep-g.nl/index.php?folder_id=47&file_id=0It's the one at the bottom.
Reply:Looks like a fun job. I think they turned out very well considering their size.
Reply:Nice workMiller Dynasty 200DX Tig Welder
Reply:Originally Posted by SpeenWe have a machine at work that does this. Just insert pipe and that's the result.Picture of the machine: http://www.ep-g.nl/index.php?folder_id=47&file_id=0It's the one at the bottom.
Reply:Why do you find stainless steel nipples so difficult to work with?
Reply:David, does this help?Walform and WalformplusMEG-WF3/BO MEG-WF3/BOThe WALFORM machine for both steel and stainless steel tubes Ø6mm to Ø42mm. By a simple rotation of the machine tool is also suitable for forming of pipe to Ø101, 6mm for 37 ° SAE brothels.MEG-WF385X MEG-WF385XThe WALFORM machine (MEG-WF385X) for both steel and stainless steel tubes Ø6mm to Ø42mm.  By a simple rotation of the machine tool is also suitable for forming of pipe to Ø60, 3mm to 37 ° SAE Brothel (MEG-WF385X/BO).
Reply:Thank you partagas  I couldn't read the German?  Dutch?MAC702, Nice pic I have done it with carbon steel nipples too.Last edited by David R; 03-19-2009 at 09:43 PM.Real world weldin.  When I grow up I want to be a tig weldor.
Reply:I'm sorry David, I forgot about this post. The machine uses hydraulic pressure and forms the pipe into that shape by force. We use it when terminating pipeing, just need to add the nut. Preferably before you distort the pipe : )
Reply:. o O (Stainless nipples ......... sounds like robotic porn or something .......)
Reply:Originally Posted by SpeenI'm sorry David, I forgot about this post. The machine uses hydraulic pressure and forms the pipe into that shape by force. We use it when terminating pipeing, just need to add the nut. Preferably before you distort the pipe : )
Reply:Nice job.  Good demonstration of a simple but very effective mechanized weld fixture.