Posted by Billy NY on May 06, 2009 at 08:54:29 from (74.67.3.238):
To start off, I HATE, did I say hate, when you go to press the post button and the D%$#gd power goes off at the same time !!!!!! What are the odds ?? Ain't the first time either, there must be a small battery back up for a PC, be it a squirrel tripping the breaker on the pole or some other nonsense, sure makes you feel good about paying that delivery fee and about ready to pull ones hair out when you lose your work don't it ? Well enuff on that....
Here's the deal, this shelf angle, ( if you saw yesterdays post (tillage and welding experts) has ripped apart, I welded the failed areas, and it ripped elsewhere, so I carefully burned it off, then installed a new one, the welds are multiple passes and are a little fat in profile towards the top, furthest one in looks off, but that is just the top checked by grinding and saw no porosity, yeah looks like overkill, but his son said weld it good, so I took him seriously. I know it will hold, the previous angle showed no sign of coming off with the factory size welds, think he made me a bit paranoid that it could come off. Welding sure is an art, arc distance, puddle control, things in your way, weight of the stinger line (I drape it over my shoulder), combination of those made it difficult for me to weld the under side with the gang flipped up, kind of vertical down, at a slant. 5/32" electrode was sticking, even with the heat up, ground those out, no porosity, just looked like crap on top, went back to 1/8" lower heat, and that made a big difference, looked a lot better, just can't leave something for someone else to see and have it look like crap even if it is strong. No shots of those, got dark, running out of time etc., but good for discussion learning, vertical down welding does not seem that difficult, when things are set up right, but is impossible when not from what I have learned so far.
So what in heck could cause this 1/2" angle to fatigue and fail? 1st time it ripped, in the center, then at the outside corner, welded those up, failed at the outside corner again, but not the welds, middle held up where I welded both sides, but new tears were near the slots, no more welding on that one. I can't figure it out, only thing I saw was that when I bolted er back up, the 2 outside ones line up when the wing/gang is raised to the flange above, then the inside bolt, you have to set both down and pry over a bit, maybe there is a kink in the alignment for raising up for transport ? If it happens again, he's got to get someone from the dealership out, get that book on it out etc., I've watched it in use in the field, they raise it at the turns, seems to be adjusted/level/depth set within reason, but I ain't no expert, just seems to appear like it's cutting in right, though we do have some fields with basketball and larger size rocks, I've been picking them for him as he tills.
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