Milling machine maintenance

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This week I've been working on the cutter drum of the road mill that I run from April thru December. It wears itself out for a living. This is how I replace worn bit holders.1. Identify. 2. Gouge with plasma.3. Couple O whacks with BFH and off she goes. It was important not to gouge the roll pins & mating surface4. Plasma off remaining weld.5. Minimal grinding and ready to weld.Next post... Attached Images
Reply:6. Preheat to 200* F or so.7. Another preheat shot showing the bevel on the new holder.8. Root pass.9. Second and third passes.10. Big weave overtop, mostly for wear surface.Next... Attached Images
Reply:A couple of finished products. Attached Images
Reply:I thought you were refering to a "Bridgeport"...Milling Machine.....zap!I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:Dualshield eh?Nice work, lotsa carbides to replace.DavidReal world weldin.  When I grow up I want to be a tig weldor.
Reply:nice work , i have welded a ton of those onChuckASME Pressure Vessel welder
Reply:Yes David, it's dualshield  I did get it dialed in pretty well. Still not too sure about running it out of position though. I think I'd lose control of the puddle. I have only burned about 75 lbs of wire on it, mostly last winter.The drum has 252 bits @ something like $4.00 ea. and if running hard we can waste 'em easily in a day and have to change them all.
Reply:Only one day! Me!
Reply:Hey Daddy, kinda related question....How come it always seems like paving contractors dumptrucks are always so clean?Anyone else notice that?Yup
Reply:Me! ,  I should clarify that it is just the replaceable bits(not pictured) that can be worn out in a day not the weld-on parts.Burnit,  It's an image thing on the clean trucks. We are required to keep our company vehicles looking nice. Lots of competition out there! I don't drive a CDL truck every day anymore, but I do have a pickup to wash and wax. At least I can do that at home with a few cold onesIf anyone cares, I ran some dualshield out of position today and had very good results. I backed off one volt and 10% less wire speed and had a 12" scorpion tail of slag on a v-up stringer. Simple things make me happy.
Reply:daddy, that must be a dream, i always had to weld mine while the drum was still in the tractor. pain in the rear. nice looking welds. dualshield is tricky to run out of position. but once you get the feel of it, it runs like a dream."Retreat hell, were just fighting in the other direction"Miller Trailblazer 302, Extreme 12 VS, Dimension 400, Spectrum 375, HF 251D-1, Milermatic 251 w/ spoolgun  Hypertherm 1000Lincoln sp 1702000 F-450 to haul it
Reply:Hey backuproller! How's it going? It took me 3 yrs to convince the co. to let me pull the drum. Up to that point I worked on it in the housing. Major suck. It comes out in a few hrs. Designed for "quick" change cutter widths.By the way the drying drum is done if you remember my first questions here. Sorry no pics, maybe later, but I had empty 50 # tins of 7018 laying around like beer cans after a pig roast.
Reply:i hear ya daddy, we re-did the flights in our new 500tph drum, took 3 of us a week for that puppy. i left the construction companies and went to Alcoa, but them fellas still bring me in on to help with large jobs. i get to skin a D6 blade next weekend for them."Retreat hell, were just fighting in the other direction"Miller Trailblazer 302, Extreme 12 VS, Dimension 400, Spectrum 375, HF 251D-1, Milermatic 251 w/ spoolgun  Hypertherm 1000Lincoln sp 1702000 F-450 to haul it