Cleaning scrap for melting
#1
I have some old transmission and transfer case housings that I plan to melt at some stage, I'm wondering if there is something I can leave them soaking in for days / weeks / months that will make them easy to clean just with the pressure washer, I'm thinking much like the old molasses bath for rust removal. I don't want to spend the same amount of time cleaning things up for melting as I would for rebuilding the gearboxes, and I don't need the parts in a hurry.

By the way, I've found that my chinese log splitter is an excellent tool for breaking gearbox housings into crucible-sized chunks. Thing sits unused for months on end, might as well put it to work!
Lathe (n); a machine tool used in the production of milling machine components.

Milling Machine (n); a machine tool used in the production of lathe components.
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#2
when I had my roadworthy an muffler shop ect I made a old boiler into a steamer id put the parts I want to clean on a grid style shelf above the water and lite the burners boil water an the steam an solvent mix used to clean up real nice .what a bout a bath in some soda wash ?
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#3
Do you have access to Simple Green, Purple Power or similar cleaner?

https://www.uline.com/Product/Detail/S-7...l-1-Gallon

Spray the cases down then pressure wash the crud away.  Use a car wash if available.
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#4
Not wanting to run a boiler, more looking at something I can just suspend things in and forget about them, pull them out and hose them off when I want them- much like rust removal with molasses as mentioned. I have just acquired a couple of empty 44-gallon drums, thinking I can use one of those to hang the cases in if I can find a suitable cleaning solution.
Would that work with the Simple Green? I have not seen it here but haven't looked either. Any clue as to what the active ingredient is?
Lathe (n); a machine tool used in the production of milling machine components.

Milling Machine (n); a machine tool used in the production of lathe components.
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#5
Ok looks like I can get the Simple Green easily enough- Purple Power not available- question remains are these biodegradable solvents suitable for long-term soaking?
Lathe (n); a machine tool used in the production of milling machine components.

Milling Machine (n); a machine tool used in the production of lathe components.
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#6
(10-27-2016, 09:48 PM)oldskoolron Wrote: when I had my roadworthy an muffler shop ect I made a old boiler into a steamer id put the parts I want to clean on a grid style shelf above the water and lite the burners boil water an the steam an solvent mix used to clean up real nice .what a bout a bath in some soda wash ?

Ron I only just twigged what you're referring to as 'soda wash', is that caustic soda? Sounds like a distinct possibility although I assume that would need a plastic drum rather than a steel one?
Lathe (n); a machine tool used in the production of milling machine components.

Milling Machine (n); a machine tool used in the production of lathe components.
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#7
With products like Simple Green, or Purple Power there is no need to soak for a long time. I use a weed sprayer that you pump up, spray the parts down, let it soak for 5 or 10 minutes and pressure wash them. It leaves the surface clean enough to paint, all oil and grease is removed.
Free advice is worth exactly what you payed for it.
Greg
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#8
I've read that Purple Power is not good for aluminum. It eats it for breakfast.

Ed
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#9
Simple Green is even safe for food prep surfaces.
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#10
(10-28-2016, 06:24 AM)Pete O Wrote: Ron I only just twigged what you're referring to as 'soda wash', is that caustic soda? Sounds like a distinct possibility although I assume that would need a plastic drum rather than a steel one?

Soda wash is quite safe.  Just do not confuse it with lye as I've known a few people who think lye is soda wash.  BTW, its also used in reverse electrolysis to strip rust off ferrous material.
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