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Tractor Talk Discussion Forum

OT: Liquid Manure Spreader

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bustedbudget

04-10-2007 21:27:22




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Hello,

Looking for an anwser for a question that I don't know where else to ask.

Need to rebuild a rusted out 3000 gal liquid manure spreader on the dairy. My question is I was told they use a special metal to resist the acid in the manure, and that regular steel would not last. I don't belive it. The spreader is made up of 1/4" 4'x8' metal. I know it's not stainless. Any ideal what it could be made out of.

I belive I can rebuild it at a fith of the cost of new.

Thanks

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RodInNS

04-11-2007 14:49:55




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 Re: OT: Liquid Manure Spreader in reply to bustedbudget, 04-10-2007 21:27:22  
I think what you've got on your mind is probably Cor-Ten. I forget it's exact properties, but it's a harder steel, and it's supposed to resist rusting. It forms an initial layer, and it's supposed to stay like that. The informastion I've read on it though states that it wants to go through wet-dry cycles. It can be wet, but it needs to dry afterward. It's not supposed to be continously wet. I'd think that in a tanker, it would be wet most if not all the time, which would not be good for Cor-Ten.
I'd just go with plain old mild steel, sand blast it, and then prime it and paint with a polyamide epoxy paint. There's a couple old Hedlund Martin spreaders around here that were done with that about 15 years ago, and they are holding up very very well. It's a bit more money for the paint, but it's well worth it. That's a very durable paint. That's what I'd do anyway....

Rod

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low budget

04-11-2007 09:39:05




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 Re: OT: Liquid Manure Spreader in reply to bustedbudget, 04-10-2007 21:27:22  
I would use plain old steel, if weld wont stick good then just bolt it fast. You say liquid manure spreader, so I assume you have storage and empty once or twice a year. If this is so, when your done for the season rinse the spreader out and spray it with old crankase oil. The thickness of the steel and the care off season will do more than any alloy they claim to use. (Your mileage may vary)



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Brian Duffney

04-11-2007 09:34:15




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 Re: OT: Liquid Manure Spreader in reply to bustedbudget, 04-10-2007 21:27:22  
I work for the Mich. Dept. of Trans. and we have many bridges made out of that steel. Here it is called A588 steel. Here the problem was that it would form it's inital coating of rust, then winter would come and the snow and SALT would continue the process, then once the pack rust and flake start it will never stop.



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Don-Wi

04-10-2007 23:35:42




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 Re: OT: Liquid Manure Spreader in reply to bustedbudget, 04-10-2007 21:27:22  
Only thing I can think of is stainless. All types of steel rust. Aluminum doesn't rust but it still corrodes and can't be welded to steel. Stainless can.

I know there are many different types of steel, and one may be slightly more resistant to rust, but it just ain't gonna resist it very good being a manure spreader. I'd just go with 1/4" sheet steel, unless you can afford stainless....

On another note, be carefull if you have to weld on the inside. Between the fumes from the manure and the fumes from welding, a guy can suffocate extremely quick in there if he doesn't have a fresh supply of air.


Donovan from Wisconsin

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4010guy

04-10-2007 23:05:25




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 Re: OT: Liquid Manure Spreader in reply to bustedbudget, 04-10-2007 21:27:22  
OK I have herd of a metal that there is no need to paint it as in forms a rust coating on it and will not rust any farther. If you like i could check into it for ya but i would rather dout it would stand up as good in manure acid. there is a lot of different grades of steel for different applications though



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doogdoog

04-11-2007 00:27:01




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 Re: OT: Liquid Manure Spreader in reply to 4010guy, 04-10-2007 23:05:25  
Aloha, I wouldn"t use that steel!! The idiots in Honolulu Hi, believed that and the Aloha Stadium rusted away! LOL

Mahalo,
doogdoog



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Bill-KCKs

04-11-2007 00:26:33




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 Re: OT: Liquid Manure Spreader in reply to 4010guy, 04-10-2007 23:05:25  
That would be Cor-Ten steel you speak of. I'd suspect it would be kind of pricey for a manure tank. They used to use Cor-Ten steel poles around here for high-mast highway lighting, but most have been removed in favor of traditional galvanized steel. I suspect they were corroding too much.

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dds-inc

04-10-2007 21:46:09




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 Re: OT: Liquid Manure Spreader in reply to bustedbudget, 04-10-2007 21:27:22  
no, they just used a special paint, probably marine or powder coat. i don't know.



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