mig and flux core tips and techniques, equipment, filler metal
hardhatdiver
- hardhatdiver
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New Member
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Joined:Thu Oct 30, 2014 7:56 pm
RMD root, pulse fill and cap
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- 8sch80inside.jpg (28.06 KiB) Viewed 1437 times
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- 8sch80cap.jpg (122.86 KiB) Viewed 1437 times
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- 8sch80fill.jpg (39.87 KiB) Viewed 1437 times
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- 8sch80root.jpg (10.03 KiB) Viewed 1437 times
- Otto Nobedder
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Weldmonger
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Joined:Thu Jan 06, 2011 11:40 pm
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Location:Near New Orleans
That's interesting, our Miller rep told me we should use 75/25 or straight CO2 for RMD. I have not had a lot of time to mess with the Pipeworx but I did run a 2g 60 deg included angle with a feather edge and a 3/32" root opening. I finished the entire joint with RMD and it bent just fine. Root passes with RMD and CO2 are really easy, I had a student watch me and who had never run bevel, he tried it and his root was pretty good, never blew it out once. If i'm not mistaken we were running about 17V, don't recall the wfs.hardhatdiver wrote:C10
Looks great, what setting and joint prep were you using?
John
Learn 6010 and you will learn to weld
Follow the progress of my students on Twitter @PentaWelding
Follow the progress of my students on Twitter @PentaWelding
hardhatdiver
- hardhatdiver
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Joined:Thu Oct 30, 2014 7:56 pm
C10 for rmd root and pulse. One gas is all you need. You can run rmd with c25 but then you can't run pulse. Gave myself a 1/6 land and 5/32 gap. After tacks its a 1/8 opening. Once you start using c10 for your pipe welding you'll stay away from c25. Much cleaner.
Thanks for the tip I'll give it a try.hardhatdiver wrote:C10 for rmd root and pulse. One gas is all you need. You can run rmd with c25 but then you can't run pulse. Gave myself a 1/6 land and 5/32 gap. After tacks its a 1/8 opening. Once you start using c10 for your pipe welding you'll stay away from c25. Much cleaner.
John
Learn 6010 and you will learn to weld
Follow the progress of my students on Twitter @PentaWelding
Follow the progress of my students on Twitter @PentaWelding
- Superiorwelding
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Joined:Thu Jan 24, 2013 10:13 pm
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Location:Eddy, TX
John,
I only have experience with STT and RMD and they can use CO2, 75/25, 90/10 or to a degree whatever has you want. Supposedly, some I these processes were designed around CO2 but work with other gas mixes. Fronius brags that their machines will work with any mixture. So far I believe them.
-Jonathan
I only have experience with STT and RMD and they can use CO2, 75/25, 90/10 or to a degree whatever has you want. Supposedly, some I these processes were designed around CO2 but work with other gas mixes. Fronius brags that their machines will work with any mixture. So far I believe them.
-Jonathan
Instagram- @superiorwelding/@learntotig
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Twitter- @_JonathanLewis
https://www.learntotig.com
https://www.superiorweldandfab.com
https://www.youtube.com/+SuperiorWeldin ... ATHANLEWIS
hardhatdiver
- hardhatdiver
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Joined:Thu Oct 30, 2014 7:56 pm
Straight from Miller, did you read this somewhere? Not trying to be argumentative I appreciate the information, just curious. Since you can change the gas type on the front panel https://www.millerwelds.com/pdf/spec_sheets/PWS2-0.pdf and they list different gases for RMD I would assume there are different internal settings for the different gases. Maybe Miller feels 90/10 gives the best results?hardhatdiver wrote:Straight from Miller when they set-up the perimeters for the pipeworx machine they used c10.
Check out this etch, kinda scary when you look at the penetration on the right side at the top of the weld.
![Image](http://members.accesstoledo.com/eyesolator/stuff/rmd.jpg)
Learn 6010 and you will learn to weld
Follow the progress of my students on Twitter @PentaWelding
Follow the progress of my students on Twitter @PentaWelding
hardhatdiver
- hardhatdiver
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Joined:Thu Oct 30, 2014 7:56 pm
Talked with one of the engineers. So yes you can use c25 for rmd but not for pulse. C10 can do rmd and pulse. No need to change gas and get the full potential out of the machine. They have those options for other gases because every shop and procedure is different. C25 works great for normal mig but if you are going to do spray transfer or pulse it will not work. And yes every time you change the gas setting on the machine it changes the amps and volts. The other great thing with rmd. Kicks a$$ on thin sheet metal. You can weld 18ga horizontal or down and have a smooth bead inside and out. Even with .035" wire.
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