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Need help with single bevel groove weld

Posted: Wed Apr 08, 2015 8:47 pm
by tschmitt
I have one more practical for school and I am done with flat. I am having trouble with a single glee bevel groove weld. I have to use two 1/4x1 1/2x5 plates with a 6013 rod. I have been at it for a couple of days and all i do is stick or blow oUT beyond belief. I have tried to run on almost everything between 80 and 130 with no luck. Any advice?

Re: Need help with single bevel groove weld

Posted: Wed Apr 08, 2015 9:00 pm
by weldin mike 27
Take lots of care preparing your root gap, land, making slight adjustments and recording the results.

Re: Need help with single bevel groove weld

Posted: Thu Apr 09, 2015 2:34 pm
by MinnesotaDave
What bevel angle, gap, and land are you required to have? (the "land" is flattening the knife edge back a little)

If a knife edge is required, no gap for me.

I would keep more of the heat on the un-beveled edge - more meat left over there.

Re: Need help with single bevel groove weld

Posted: Thu Apr 09, 2015 4:09 pm
by tschmitt
It's a 45° bevel, 3/32 gap with a 1/8 6013 rod. It doesn't say anything about a landing or knife edge being required. I asked my instructor about it today and was told if I want to I can to make it easier.

Re: Need help with single bevel groove weld

Posted: Thu Apr 09, 2015 4:12 pm
by weldin mike 27
You can also align your joint so that the electrode comes from the bevelled side and points at the square edge.

Re: Need help with single bevel groove weld

Posted: Thu Apr 09, 2015 4:19 pm
by tschmitt
I have been doing that but all I seem to be able to do is blow it out and stick, this is more aggrivating than a regular open root

Re: Need help with single bevel groove weld

Posted: Thu Apr 09, 2015 4:51 pm
by MinnesotaDave
tschmitt wrote:It's a 45° bevel, 3/32 gap with a 1/8 6013 rod. It doesn't say anything about a landing or knife edge being required. I asked my instructor about it today and was told if I want to I can to make it easier.
When he demonstrates the weld for you, what is different from what you are doing?

Rod angle? Amps? Drag angle? Arc length? Travel speed? Size he lets the puddle get? etc.

Re: Need help with single bevel groove weld

Posted: Mon Apr 13, 2015 9:02 pm
by weldstudent15
If you have the option to set your arc force "dig" on your welder, try running it at about 85 amps and 40-70 arc force

Re: Need help with single bevel groove weld

Posted: Wed Apr 15, 2015 7:25 pm
by Otto Nobedder
Are you welding this on AC? If not, what polarity?

This matters.

Steve S

Re: Need help with single bevel groove weld

Posted: Wed Apr 15, 2015 9:12 pm
by tschmitt
I tried it on AC and both DCRP &DCSP, it wasn't for a grade but an extra that they had me to so I could try it and try to get a feel it. But AC was actually better for it. Started running my pad of beads for horizontal.