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rollig

Posted 4/7/2009 23:13 (#673027)
Subject: Follow-up to 9400T Cracked Rim Welding w/ pics

SCMN

I had the welding done last saturday but I just got around to downloading the pics to my laptop. For the background story see the previous threads I started to describe what I was up against.

http://talk.newagtalk.com/forums/thread-view.asp?tid=93146&posts=12#M662474

http://talk.newagtalk.com/forums/thread-view.asp?tid=93278&posts=31#M663765

What I ended up doing was placing wet towels on the back side of the rim on the rubber right under the weld. I also had one laying right next to the bead as I laid it and then used it to cool the metal as best as I could after I laid a few beads. It got fairly hot at times as I got more impatient. It was a long process, welding a few beads down in the crack, letting them cool, weld a few more, and then a finish pass. The second bead I laid on pretty thick so I can grind it smooth later and paint over it. I ground a small patch when I started to see how it would look but did not finish it yet. I am glad it's done. I must say that I am in love with my Hobart 187(coming from an old stick welder). I found out fast that this was not the project to learn to weld vertically on so I did a few feet and then moved the tractor ahead to keep it fairly flat. Every time I did that I had to hook the batteries back up so it was a pain but it worked out better for the welds. Time will tell if I did it right and got enough penetration. It took a long time to grind the crack out too as it was about .325" deep all the way across. Started with the air cut off and a thin disk, then to the angle grinder with 1/8" disk, and then with a 3/8" disk. It was a lot of metal to move by grinding. Please excuse the crappy pics, the lighting in the shop is not great.

P.S. Thanks to everyone for the good suggestions before I started!