Well we sent a motor out for rebuild and the cast alum drive housing that was attached got cracked. The vendor welded the crack but it has some porosity and leaks gear oil. As a temporary repair a guy smeared some silicone caulk over it and it surprisingly works.
Now here is where I come in.... Since I am the most competent welder they want me to weld it up this weekend since the new housing in over a month out. I really won't have the time to remove it, clean it and tig it like of prefer. I've only got about 4 hrs or time in between runs and that includes some fire watch time. So I'm thinking drain the oil, wire brush the silicone off, grind there crappy weld job, wipe with acetone, preheat with a torch and hit it with some beads from the spool gun on my Miller 252, 4043 wire. I know I'm going to have some oil trying to pull up but I think this is my only option unless I put epoxy over it.... Kills me to use that instead of repairing properly.
Just wanted some opinions from my welding brothers.
Tig welding tips, questions, equipment, applications, instructions, techniques, tig welding machines, troubleshooting tig welding process
dirtmidget33
- dirtmidget33
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Heavy Hitter
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If new housing is coming in a month just keep it going until then drain oil clean off silicon wipe down and JB weld it I hate the stuff but if it only needs to be temporary and they won't let you TIG it right. Then they deserve second rate repairs
Of course 4hrs won't give the stuff time to cure need 24hrs
Of course 4hrs won't give the stuff time to cure need 24hrs
why use standard nozzles after gas lens where invented. Kinda of like starting fires by rubbing sticks together.
Patch 'over' the crack with an external patch of some 11 gauge scrap. If you can anneal the 11 gauge, you can patch irregular shapes by first strategically tacking the annealed piece, and it and hammering it to fit as you go. This will allow you to make a neat and continuous weld on the surface of some cleaner metal. Radius any corners to make it neater yet. It will almost look like it is supposed to be there like a factory repair.
I anneal and puzzle cut my patches to fit into some pretty intricate shapes.
I anneal and puzzle cut my patches to fit into some pretty intricate shapes.
Miller ABP 330, Syncrowave 250, Dynasty 300 DX.
Honorary member of the Fraternity of Faded Tee Shirts.
Honorary member of the Fraternity of Faded Tee Shirts.
Good idea Jeff I had not considered that....I may have enough room to pull that off its in a bit of an awkward area. Do you use the carbon burn off trick to know the right temp? Its something I've read about and have always wanted to try but have never done.
I weld stainless, stainless and more stainless...Food Industry, sanitary process piping, vessels, whatever is needed, I like to make stuff.
ASME IX, AWS 17.1, D1.1
Instagram #RNHFAB
ASME IX, AWS 17.1, D1.1
Instagram #RNHFAB
I don't use the carbon trick but I have before. Instead, for these smaller pieces, I use a mapp torch. I watch the surfaceof the aluminum where the flame 'washes' it. Once the flame starts to pick up an orange tint in that zone, it is ready and I quench it suddenly. Most of the 11 gauge I have is 5052.Rick_H wrote:Good idea Jeff I had not considered that....I may have enough room to pull that off its in a bit of an awkward area. Do you use the carbon burn off trick to know the right temp? Its something I've read about and have always wanted to try but have never done.
Even if you have to put the patches in pieces, it's still way more effective in stopping leaks on cast, or any other contaminated metal for that matter.
Miller ABP 330, Syncrowave 250, Dynasty 300 DX.
Honorary member of the Fraternity of Faded Tee Shirts.
Honorary member of the Fraternity of Faded Tee Shirts.
- TRACKRANGER
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Joined:Wed Aug 06, 2014 12:48 am
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Location:Melbourne, Australia
Rick, were you referring to the carbon trick for preheating the cast, or for annealing the patch? I suspected it was for pre-heat.
Trev
Trev
EWM Phonenix 355 Pulse MIG set mainly for Aluminum, CIGWeld 300Amp AC/DC TIG, TRANSMIG S3C 300 Amp MIG, etc, etc
If there is any confusion on my post, I anneal the patch material so it will conform to the irregular casting. Also, patching almost mitigates the need for preheat because it is much less likely to crack, provided the machine is capable enough.
Miller ABP 330, Syncrowave 250, Dynasty 300 DX.
Honorary member of the Fraternity of Faded Tee Shirts.
Honorary member of the Fraternity of Faded Tee Shirts.
No confusion on my end, I was also talking about the patch. After getting it apart and seeing what I was dealing with I found 2 small pin holes that were barely seeping and a crack/chip and the main center seal, leaking like a sieve. So I filled the pin holes and epoxied the seal housing crack since I couldn't weld it as it was right against the seal. The new one is on the way....TamJeff wrote:If there is any confusion on my post, I anneal the patch material so it will conform to the irregular casting. Also, patching almost mitigates the need for preheat because it is much less likely to crack, provided the machine is capable enough.
- Attachments
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- Crack/chip at main seal
- IMG_20141018_151713317.jpg (39.94 KiB) Viewed 726 times
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- IMG_20141018_151725917_HDR.jpg (46.02 KiB) Viewed 726 times
I weld stainless, stainless and more stainless...Food Industry, sanitary process piping, vessels, whatever is needed, I like to make stuff.
ASME IX, AWS 17.1, D1.1
Instagram #RNHFAB
ASME IX, AWS 17.1, D1.1
Instagram #RNHFAB
Nice looking job. Especially considering the suboptimal conditions you had to deal with.
Cheers.
-Eldon
Cheers.
-Eldon
We are not lawyers nor physicians, but welders do it in all positions!
Miller Dynasty 280DX
Lincoln 210 MP
Miller 625 X-Treme
Hobart Handler 150
Victor Oxygen-acetylene torch
Miller/Lincoln Big 40-SA200 hybrid
Miller Dynasty 280DX
Lincoln 210 MP
Miller 625 X-Treme
Hobart Handler 150
Victor Oxygen-acetylene torch
Miller/Lincoln Big 40-SA200 hybrid
- TRACKRANGER
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Weldmonger
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Joined:Wed Aug 06, 2014 12:48 am
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Location:Melbourne, Australia
Thanks Rick for the clarification on the heat use. I wasn't sure.
Nice repair. Looks like you used the sandblaster to give yourself a fighting chance?
Trev
Nice repair. Looks like you used the sandblaster to give yourself a fighting chance?
Trev
EWM Phonenix 355 Pulse MIG set mainly for Aluminum, CIGWeld 300Amp AC/DC TIG, TRANSMIG S3C 300 Amp MIG, etc, etc
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