any experienced pipe welders in here?
any experienced pipe welders in here? I am working with 6"-10" sch/40-sch 80 mainly. 6010 5P+ root, with 7018/8018 cap. I have the root down, and the top half of the cap down. Just am having some issues getting my flow evenly distributed with the 7018 on the bottom side of the pipe. I keep getting a crown and want it to lay more rounded and flat. Turn the heat from between 100-130 amps with an 1/8" rod and its about the same thing. Do I need to focus more on the arc gap length or angle of the rod, or what? Going back to work on some contracts toward the end of the week, and this is the only thing I am not totally comfortable with.
Brandon
Brandon
TECH Fanatic
Joined: Apr 2005
Posts: 1,231
Likes: 1
From: Just This Side of Damnation
It's been a while, and it was mostly flat and vertical, but my best 7018 work was at a lower temp that got good connection to the sides but didn't get the puddle too excited. Can't remember the heat, and didn't do pipe welding. The passes were flat as a calm lake and the slag peeled up behind the weld and I just brushed it away.
Originally Posted by Mr Incredible
It's been a while, and it was mostly flat and vertical, but my best 7018 work was at a lower temp that got good connection to the sides but didn't get the puddle too excited. Can't remember the heat, and didn't do pipe welding. The passes were flat as a calm lake and the slag peeled up behind the weld and I just brushed it away.
Originally Posted by 99.9percenter
Angle of rod!! On the underside of the pipe you need an aggressive weave pattern,this will require more heat to avoid cold lapping,lack of penatration.
Originally Posted by jdustu
werd...more heat and quicker weave....i know some people run stringers all the way out to avoid that crown......like you said, the angle is pry the toughest part, not just upt and down but side to side as well....it's easy to lose orientation coming around a pipe.......
Brandon
Trending Topics
Originally Posted by xfactor_pitbulls
What? Are you guys saying more heat than 130 amps with a 1/8" 7018 cap? Thats a fast burning and high shield rod, its hard to imagine hotter than that for a cap. I will give it a whirl tomorrow and see how it goes. On the bottom of the pipe I need to advance the hand and leave the rod behind or vice versa? For the weave keep an arc gap or drag? Dragging seems to make it more prone to pool on the bottom side. The single most important thing to what I am doing is uniformity, without that I am going back to the house.
Brandon
Brandon
i've done mosly tig when it comes to pipe welding, but the last cert i did for stick was a 4g......7018, 1/8" ;the guy doing the testing said he'd go at least 130, and i was leaving the rod behind and keeping a super short arc, practically pushing the rod into the weld.....he also suggested doing stringers for overhead, it just sags way to easy with a weave.......the guy that certified for 6g(stick) that week did stringers all the way out.....
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
On The Tree
Joined: Nov 2001
Posts: 105
Likes: 0
From: Finksburg
Originally Posted by xfactor_pitbulls
I am working with 6"-10" sch/40-sch 80 mainly. 6010 5P+ root, with 7018/8018 cap. I have the root down, and the top half of the cap down. Just am having some issues getting my flow evenly distributed with the 7018 on the bottom side of the pipe. I keep getting a crown and want it to lay more rounded and flat. Turn the heat from between 100-130 amps with an 1/8" rod and its about the same thing. Do I need to focus more on the arc gap length or angle of the rod, or what? Going back to work on some contracts toward the end of the week, and this is the only thing I am not totally comfortable with.
Brandon
Brandon
Originally Posted by TheOutlaw
Hold your sides a tad longer
i had an instructer at the tech center ask me this:
"say you and two of your buddies are in the front seat of a truck driving along a dirt road and sharing a bottle of whiskey.....the bottle goes back and forth from one side, to the middle, to the other side, to the middle, and so on...they all take the same amount per chug, who gets the most drunk?"
well, the guy in the middle.......keep the bottle on the sides longer to even things out
Originally Posted by xfactor_pitbulls
What? Are you guys saying more heat than 130 amps with a 1/8" 7018 cap? Thats a fast burning and high shield rod, its hard to imagine hotter than that for a cap. I will give it a whirl tomorrow and see how it goes. On the bottom of the pipe I need to advance the hand and leave the rod behind or vice versa? For the weave keep an arc gap or drag? Dragging seems to make it more prone to pool on the bottom side. The single most important thing to what I am doing is uniformity, without that I am going back to the house.
Brandon
Brandon
how'd it turn out brandon?
