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doleslie
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    Mon Oct 16, 2017 8:53 pm
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    Prescott Valley, AZ

Front side of weld
Front side of weld
20171019_144208.jpg (26.49 KiB) Viewed 459 times
Hi everyone:
Here is the front and back of a weld. I'm concerned about the back side of the weld. Please observe and comment.
Using mild steel 18 gauge with a 9 torch 1/16" electrode.

Thanks,
Dennis
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The other side has been reversed to match the front.
The other side has been reversed to match the front.
2017-10-19 14.43.31.jpg (29.06 KiB) Viewed 459 times
Dennis Leslie
Prescott Valley, AZ
Newerbie
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Hello Dennis and welcome to the forum
You're seeing typical burn thru due to the heat input from the weld, what size filler did you use? For 18ga I'd use .035" or .045"
Richard
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doleslie
  • Posts:
  • Joined:
    Mon Oct 16, 2017 8:53 pm
  • Location:
    Prescott Valley, AZ

I was using 1/16" rod. I do have some .045". I'll give that a try. By the way, I was using 67 amps. You have addressed my problem area. Thanks

Dennis
p.s.
I have done a similar weld on 11 ga (.122") and here are pictures of both sides. This joint material is 2.5 times the thickness. I used 100 amps with a 3/32" electrode and 1/16" filler rod.
Back side of weld
Back side of weld
2017-10-22 14.14.23.jpg (63.41 KiB) Viewed 351 times
20171022_141335.jpg
20171022_141335.jpg (68.89 KiB) Viewed 351 times
Dennis Leslie
Prescott Valley, AZ
Newerbie
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