Search found 17 matches

by jtornabene
Wed Sep 02, 2020 9:52 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: Undercut
Replies: 17
Views: 3475

Re: Undercut

Thanks for the tips! I have struggled without any mentoring other than you tube.


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by jtornabene
Wed Sep 02, 2020 8:57 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: Undercut
Replies: 17
Views: 3475

Re: Undercut

Yeah your amp gauge is off looks like about 40 amps off. Give it 5 or 10 more and that weld bead will smooth out. Side note. If your long arcing then you need more amps then someone who holds close. But long arc usually leaves lots of spatter. I’m not seeing that. Slow down just a bit more with the...
by jtornabene
Wed Sep 02, 2020 7:44 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: Undercut
Replies: 17
Views: 3475

Re: Undercut

Single pass with 3/32 7018. According to my amp gauge (which I think is wrong) I’m running 106 amps. I can’t keep from sticking striking the arc below that. I held longer on the top to try and fill in. https://uploads.tapatalk-cdn.com/20200902/629d1f7e75e806d1a9ae06de6d4c3535.jpg Sent from my iPhone...
by jtornabene
Wed Sep 02, 2020 4:26 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: Undercut
Replies: 17
Views: 3475

Re: Undercut

Poland308 wrote:If it’s only 1/4 inch metal I’d be running 3/32 at about 80 amps.
Would you expect to make two passes to fill it with 3/32?


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by jtornabene
Wed Sep 02, 2020 2:45 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: Undercut
Replies: 17
Views: 3475

Re: Undercut

Yes rod angle on 7018 is pretty forgiving you can push or pull it. It’s an all position rod. But arc length is much more critical to getting it to run right. Most common things I’ve found that create undercut with 7018 are, 1 not getting off the mill scale, 2 to fast of travel or not holding the si...
by jtornabene
Wed Sep 02, 2020 2:44 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: Undercut
Replies: 17
Views: 3475

Re: Undercut

Yes rod angle on 7018 is pretty forgiving you can push or pull it. It’s an all position rod. But arc length is much more critical to getting it to run right. Most common things I’ve found that create undercut with 7018 are, 1 not getting off the mill scale, 2 to fast of travel or not holding the si...
by jtornabene
Mon Aug 31, 2020 10:22 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: Undercut?
Replies: 7
Views: 1637

Re: Undercut?

The plates are cut at 90 degrees. I had the inside edges touching and tacked together.

So, I would have been better off doing a straight drag on the first pass and try to fill on the second?


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by jtornabene
Mon Aug 31, 2020 10:17 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: Undercut
Replies: 17
Views: 3475

Re: Undercut

Thank you.
Would rod angle make much difference?


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by jtornabene
Mon Aug 31, 2020 4:16 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: Undercut?
Replies: 7
Views: 1637

Re: Undercut?

I won’t get discouraged, I’m just trying to learn as much as I can with each weld. I won’t have continuous welding projects to learn from.


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by jtornabene
Mon Aug 31, 2020 3:30 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: Undercut?
Replies: 7
Views: 1637

Re: Undercut?

Great I speed up on the other side [emoji1303].


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by jtornabene
Mon Aug 31, 2020 3:27 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: Undercut
Replies: 17
Views: 3475

Undercut

https://uploads.tapatalk-cdn.com/20200831/7e4a61eefe0cb80409aefc1cd4fc04a9.jpg 125A 7018 1/8” https://uploads.tapatalk-cdn.com/20200831/9f1cbe83424756fc9b4c8e1fb7280aa2.jpg 109A 7018 1/8” Should I be using a larger rod? Slower speed? I am still struggling to watch the puddle while seeing where I am...
by jtornabene
Mon Aug 31, 2020 3:22 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: Undercut?
Replies: 7
Views: 1637

Undercut?

What can I do to prevent undercut? I am welding 1/4” plate with 1/8” 7018. I started at 125 amps and kept dropping the amps until I couldn’t keep the rod from sticking. I ended at 109 amps. Should I be using a larger rod? Slower speed? I am still getting used to watching the puddle while trying to s...
by jtornabene
Sat Aug 29, 2020 5:48 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: 1/4 Plate Warp
Replies: 7
Views: 1400

Re: 1/4 Plate Warp

Tack some “strong backs” on the opposite side. This applies reversed force against the side you weld on. Critical when welding flat plates. Could I make those out 1/4” peace tackle perpendicular to the back surface? Sent from my iPhone using Tapatalk That will do fine Thank you. Sent from my iPhone...
by jtornabene
Sat Aug 29, 2020 5:23 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: 1/4 Plate Warp
Replies: 7
Views: 1400

Re: 1/4 Plate Warp

cj737 wrote:Tack some “strong backs” on the opposite side. This applies reversed force against the side you weld on. Critical when welding flat plates.
Could I make those out 1/4” peace tackle perpendicular to the back surface?


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by jtornabene
Sat Aug 29, 2020 5:13 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: 1/4 Plate Warp
Replies: 7
Views: 1400

Re: 1/4 Plate Warp

2 words. Heat Warps. Spread the heat around and limit how much you apply to one area. You can also use chill blocks on it also, to pull some of that heat out while you're welding. One thing on thick material is use adequate amps, if you have the amps low it will take a long time to heat the materia...
by jtornabene
Fri Aug 28, 2020 2:50 pm
Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
Topic: 1/4 Plate Warp
Replies: 7
Views: 1400

1/4 Plate Warp

I am new to welding. I have welded together some 1/4" x 6" bar stock for a winch mounting plate. I put multiple passes on some of the joints which seems to have caused the plate to warp. What can I do to avoid this in the future? If add multiple passes on the back side of the joint could i...
by jtornabene
Fri Aug 28, 2020 9:54 am
Forum: Member Introductions
Topic: Hello From Texas
Replies: 2
Views: 410

Hello From Texas

Hello, I am a new hobby welder. I am interested in getting better at stick welding.