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7018 uphill problem

4.1K views 24 replies 14 participants last post by  solvepassel  
#1 ·
I am a student in a community college welding program. I am having problem welding 7018 uphill, the weld drips. I am using a1/8 rod at 120amps on a Miller XMT 350 cc/cv. My welds are fine up to about a 65 degree up angle but when I hit 90 degrees the weld pool drips metal. My travel speed is moderate with no undercut and I use a side to side motion with a slight pause at each side ( not doing a wide weave) and a 15 degree rod up angle in my stinger.

Any suggestions you can offer to correct this problem will be greatly appreciated.

Thank you very much.
 
#3 ·
Be aware that with 7018, much of the "dripping" is actually slag, sometimes copious amounts of it. Are you brushing it off after you weld? Use an angle grinder with a twisted wire brush. The bead under it can be DRAMATICALLY different. I also strongly recommend making a pad, using 7018 vertical up. Do 4 or 5 layers.
 
#5 ·
Keep the arc length very short. If needed, drop the amps down to around 95-105. If that doesn't still work, the it could simply be too much heat for the test piece.
 
#14 · (Edited)
yea, 120 amps a lil much for that. we had a water trough at school, where we cooled/dipped work piece in every couple+ beads/passes.
try dropping down 10 amps, and increase/steepen ur rod angle at this 90 degree/problem area - and adjust from there if need be
 
#15 · (Edited)
Watch the arc force (dig?) knob on the XMT, it will just keep pushing amps into the rod if you have it turned up too far, so no good for uphill.

Here's you trying to keep a short arc length, and here's the machine trying to boost the amps and you end up with a hot runny mess.

I'd turn arc force down to say 25-30% and amps to 110, maybe 105, for 1/8". It's been a while since I used an XMT for stick, more recently using a lunchbox welder at 105 amps for uphill and it loved it.

IIRC the XMT with a bit of dig on it will burn a 7018 as hard as you can push it into the joint... was almost impossible to snuff the arc out or short circuit it.
 
#17 · (Edited)
I solved my drip problem. I was pushing the the rod too far into the puddle (short arc to the extreme) and the 3/8" plate could not handle the heat thus the metal dripped out. Now I focus on my arc length and make certain I establish a good puddle before I start moving up the plate. All is good now.

Thank you all for your suggestions, they are greatly appreciated.

PS: My settings are 109 amps, 25% arc force (Dig) and approximately15% uphill tilt on my rod.
 
#24 ·
You could ask a question on how to weld and get a thousand replies, but since your in school and probably getting good info. You just need to burn a truck load of rods and you'll get it! Just practice Man and it will come!
 
#25 ·
I had the same problem, and even my master couldn't say what was wrong. I'm happy to become a part of this community. As a student, I have many challenges during my studying, and such forums and websites as https://essayservicescanner.com/edusson-review/ help me to keep studying without burnout. Thank you for sharing it!



You have a master?

Does she wear lots of black leather and carry a whip?

If so, that HARDLY qualifies her to give advice on welding.

Sent from my SM-G781U using Tapatalk

I wrote it not in this sense:blush:


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