Can it REALLY be done???

admin

So its another one of my little experiments with a 110v MIG. This time I used 0.030 lincoln innersheild. On 3/8 plate again at tap D and 5 wirespeed. No bevel or preheatWeld with slagSlag cleaned offthe little wrench couldn't break it nor could it with a 2foot extentionnext post......CharlesThunderbolt AC/DCRed Flames BWELincoln sp-135t
Reply:cut about 3/4 off one end and used the BFH...weld broke in 3 hitsMy homemade hammer Took about a dozen HARD wacks to break it, knocked the piece out of the vice a few times before it brokeSo I provided the evidence, now what does the jury think about welding 3/8 in one pass??? but what about 2 passes and minimal joint prep? Ok on to the next post.....CharlesThunderbolt AC/DCRed Flames BWELincoln sp-135t
Reply:So, the single pass didn't work out real well. This time with a little bevel and two passes.....A little bevelAfter two passesAbout 3/4 cut off again and broke, BUT the base metal itself broke and not the weldcross section of cutI was unable to break this piece with the hammer or wrenchThe point of this thread was to see if 3/8 plate can be welded with a 110v MIG with minimal joint prep. and a few passes. I proved it was possible with full bevel, open root and multiple passes. But with this, i'm not sure... so guys, what do you think??? did the little lincoln pass the 3/8 test? BTW, I didn't even touch the duty cycle of the welder even in this 80° weatherCharlesThunderbolt AC/DCRed Flames BWELincoln sp-135t
Reply:Originally Posted by richcharleswhat do you think??? did the little lincoln pass the 3/8 test?
Reply:Yes, it can be done, it is simply at the limit for it. If you preheat the metal a bit, it will be better still. Just goes to show you, there is almost always a way to get it done. The welds look pretty good! The edges and lap are pretty equal, meaning you were keeping the heat where you needed it to help with the penetration.
Reply:Weld it flat, then cut a 1" strip and see if you can bend it into a U without it breaking.
Reply:nice thread Charles.  How about seeing what a little preheat would do?DewayneDixieland WeldingMM350PLincoln 100Some torchesOther misc. tools
Reply:Looks good.  Nice job.  Flux core sure does run hotter.  I have never tripped out my SP 100, just breakers.Thanks for the effort.Your gonna break the vice some day.  DavidReal world weldin.  When I grow up I want to be a tig weldor.
Reply:For those who missed my previous thread on the same subject, here it is - http://www.weldingweb.com/vbb/showthread.php?t=10898 I had excellent success with the welds in that thread.CharlesThunderbolt AC/DCRed Flames BWELincoln sp-135t
Reply:I think it's great to see at what point either the weld bead or base metal fails. That's what these experiments are all about, learning the limits. Keep in mind the flux core you're using tends to be more brittle than let's say an S-6, so if a person did a relatively small bead in comparison to the material size it wouldn't be a total suprise to see at least some bead breakage. Thanks for the demos guys.
Reply:Great job!Yeah fluxcore is so much hotter...I love this kind of tests!In fact, a close up of the "base material breaking" would be amazing, the posted pics look very little.My Babies: HF Drill pressHF Pipe Bender3   4.5" Black and Decker angle grindersLincoln Electric PROMIG 175that´s it!
Reply:I learn from these experments too.  The ones I do and others.It all helps me be a better welder.DavidReal world weldin.  When I grow up I want to be a tig weldor.