I'd trust your judgement Jon. What would you recommend to re-attach a new base ? If 7018 DC, electrode + is not suited to mild steel, like A36, I must be totally lost then LOL. The horizontal weld across the top flange of the beam literally had no penetration and it all looked MIG welded, not sure what wire/process.
Look at the right top curled over part of the flange added to the beam flange where it meets the curl, then where it meets the top of the curl. Where it meets the curl, looks like the weld broke, then where it meets the top, there is very little penetration to the curled part. The entire weld on top of the curl pulled away with the base. Look close at the entire weld along the top flange, it has pulled cleanly of the flange, hardly any penetration.
Now I am no expert accomplished welder with credentials to weld pipe line in a refinery, but I am confident with 7018 stick off my Miller NT 251 Trailblazer. I have a piece of angle that came off a big JD disc harrow (gang hanger attachment) that the careless brother of the farmer I worked for kept getting too close to field edges and was breaking 1/2" thick steel parts on this disc. to keep him going I vee'd out the crack, drilled the ends, welded 2 passes of 7018, heat turned up, maybe not a perfect weld profile, but pretty decent and with metal fatigue contributing I would imagine, this 1/2" angle broke again, but not at any welds. I have the piece, and later welded to the tube frame, a new 1/2" angle/hanger which never broke again, (brother not running it LOL) All mild steel.
Also, I worked for a steel fabrication shop for 5 years, they never used mig when weldging things like 3/8" thick hinge leaf heavy duty hinges to the thick steel doors we built, always stick, but most things were wire feed MIG if I recall correctly.
Anyways, be great to hear how you would repair, always something to learn.
Granted, this splitter should never really have the forces applied that were, no doubt on that, all on operator error and that darned log from H$ll !
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