7016 DCEN 5G root - photos - advice

Hi all - done this page with photos of my efforts
http://www.weldsmith.co.uk/tech/welding/learn_proc/pipe/1007late_5Groot7016/root5G7016.html
Any advice you can give to get me onward from this stage?
Particularly struggling with starting on the lowest sector - at the "5-30" / "6-30" position. Seems can never get a good 7016 root weld if not looking side-on at the weld (cellulosic keyhole you can do largely on sound(?)). Same problem at top - with all runs, don't get good result if not able to look down at weld. With Basic, need to see weld-pool to be able to tend it. How do you really manage this?
Richard S
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I feel like I am reading letters from a parallel universe. I had no idea anybody still used 7016, and especially on DCEN.
I can't quite figure out why the whole 7018 thing seems to escape so many countries outside the US. The stuff really does work better than most other rods for structural and pipe.
I don't know of any welding supplier who even carries 7016 in the US. I believe you can special order it, but I can't think why.
I wonder what other nearly extinct rods are being used in other lands. Anybody out there using 7015 or 7026? Maybe some 6023?
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On Sun, 29 Aug 2010 02:04:47 -0700, Ernie Leimkuhler

I just picked up 30 odd pounds of 7015 at a yard sale. 10lb boxes, un opened.
Says its Nuclear Reactor rod. Ive not run any of it yet.
Whats it good for?
Got a bunch..bunch of Hastalloy as well. Whats it good for?
Gunner
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How much you want for the Hastelloy? I'm not saying I am addicted to the stuff but,... I might be interested.

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On Sun, 29 Aug 2010 15:37:30 -0700, Ernie Leimkuhler

Ill check and see what I have. Lots of small brown sticks..shorter than regular rod and a bit bigger than 1/16" inch and then there are some cans of bigger rod.
Ive got a fair bit of rod http://picasaweb.google.com/gunnerasch/WeldingStuff#5494452755743968898
And really cant use all that much exotic stuff
Ill post a list. Your email address doesnt work.
Gunner

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snipped-for-privacy@stagesmith.com always works

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On Wed, 01 Sep 2010 21:06:13 -0700, Ernie Leimkuhler

Crap..I forgot. Stroke moment...sigh. Ill have it to you before Saturday.
Gunner, also emailing reminder to himself...

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Get yourself several colors of PostIt notes. They look cool all over the place, usually last long enough to remind you of what to do, eventually blow away, identify you as an old hippie or Rainbow Warrior or DeadHead, look cool as a tie died shirt once you have a bunch of them up, and, the best part is ...............
they're eco-friendly and bio degradable after a couple of years. In the meantime, they add color to the old hacienda.
Steve
Heart surgery pending? Read up and prepare. Learn how to care for a friend. http://cabgbypasssurgery.com
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Just make sure not to use rust colored Post-It notes, as they blend with the environment.
i
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wrote:

It's hard enough to find stuff right now in the rust pile. I can't imagine filling in any more space with something rust colored.
Steve
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Color specific - e.g. priority like the color code.
Then a color will mean something other than pretty. If you need quick notes and many of them that stick and come off - try the blue painting tape - there is a special kind as well and a sharpie pen to jot on it. Limited depth, but length is there!
Martin
Martin H. Eastburn @ home at Lions' Lair with our computer lionslair at consolidated dot net "Our Republic and the Press will Rise or Fall Together": Joseph Pulitzer TSRA: Endowed; NRA LOH & Patron Member, Golden Eagle, Patriot's Medal. NRA Second Amendment Task Force Originator & Charter Founder IHMSA and NRA Metallic Silhouette maker & member. http://lufkinced.com /
On 9/2/2010 10:03 AM, Ignoramus28169 wrote:

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Nuclear reactors? :-)
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wrote:

Ill take a picture and post it on my webpage <G>
Gunner
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Ernie
As best I am able to tell you:
The 7016 rod used, "Filarc 56S", is reputed to have been developed in the 1970's to make Basic welds of oil-rigs for the North Sea manageable. Low-slag rod so not choking in slag at bottom of V-prep root, or somethign like that.
They genuinely do seem to run better on DCEN. Going for all following runs with 7018 - you need to be on DCEP. My Bohler EV50's immediately tell you if you forget to change polarity!
This is a standard technique over here. I was taught it recently.
Enlighten me on "the whole 7018 thing". What is it you mean by this?
Sorry but you will know - practice in N.Am. and practice here can be very different.
Richard S
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The combination of 6010 and 7018 for open root pipe or just repair welds, is quite elegant and extremely effective.
Full pen 7018 just works. Sure, getting that initial root pass takes real care in a groove weld, but with practice it just flows.
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wrote:

I watched a guy do a piece of 3" schedule 80 using 7018 on an open root. He made it look simple, and it really looked like he was just sticking it in there with no perceptible arc distance at all. Ran around the whole pipe, and I was more amazed at the ability of him doing that with the pipe horizontal, and him keeping the right rod angle on a fast moving weld. It came out beautiful, and the inside looked like it had been Tigged walking the cup. Of all names, his name was Steve Allen.
Hey, Steve, if you're out there. Remember Reading and Bates and the old OS7?
Steve
Heart surgery pending? Read up and prepare. Learn how to care for a friend. http://cabgbypasssurgery.com
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Hi guys - thanks very much for replies

Yes - and don't I know it! No point going there - here in UK all-Basic (7016/7018) coding is all that's valued.

Do you mean as in "it works reliably and that is that" or "you can just about make it work but it's always a close-run thing whether it works or not"?

So that's saying if you keep it in practice you can 5G root with 7018 reliably...?

So tell me about 5G root with 7018...
How widely is it used?
What rods do you use? (for instance, are my Bohler EV50's good for this?)
What Amps? What rod size?
Polarity - DCEP? I find 7018's object to DCEN. Whereas the "Filarc 56S" 7016's run just fine on DCEN and are meant to be used that way as was demonstrated to me.
You must always use absolutely linear run to avoid porosity when full-pen rooting with Basic (7016/7018)? - like what Steve describes seeing?
I wish I could achieve Basic SMA welds like what Steve describes!
Thanks again
Rich Smith
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I mean it flows smooth and even, like butter on warm bread.

I have never tried open root with 7018, always ran the root with 6010.

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