John Deere Tractors Discussion Board|
Re: Re: Phosphoric acid vs. Muriatic acid?
[ View Follow Ups ] [ Post Followup ] [ Return to Forum ]
Posted by Frank on January 12, 2002 at 09:19:29 from (184.108.40.206):
In Reply to: Re: Phosphoric acid vs. Muriatic acid? posted by Clooney on January 12, 2002 at 08:32:38:
I first found phosphoric acid etchant at NAPA, back around 1980. I had to treat some metal that had been in a fire, and this even said for burned metal on the label.
I used to use Metal Prep, but when I ran out of it a few months back, I saw a product at Discount Auto Parts called "Right Stuff De-ruster Formula #3000". It seems to me to me be a bit thicker liquid, but still sprayable/brushable. About the consistency of dish soap. Maybe it hasn't been thinned with water.
I use it after sandblasting to provide the last removal of rust in the pores, and it gives a nice little phosphated look, and the parts seem to stay rust free for months on the shelf. Here in Florida I fight humidity 12 months a year. I'm experimenting with electrolysis cleaning right now, and after the bath, I spray it on, wait a bit, hose it off, and the dry the part completely.
This stuff runs about 8-9 bucks a gallon, and it goes a long way. Sometimes I even put in my old paint gun and just spray it on (USE A MASK !).
The side benefit that you know is that it also removes the last vestiges of silica left imbedded in the metal. Left behind those little silica nodules draw moisture and cause paint and primer to "pop".
They have a website = http://www.cli-rightstuff.com
I'll post the link below.
I like it as well as anything else I've tries, and since it is available locally, I don't have to buy in bulk.
Great for swishing old gas tanks, too. Locks up the old red rust and converts it to the stable form of iron oxide (black oxide). Here's a note I found elsewhere:
Rust is really Fe2O3, a reddish form of iron oxide. Iron has another oxide, Fe3O4, which is sometimes called black oxide, black rust, or hammerscale. Black oxide is a good protection for steel. Like aluminum oxide, black oxide molecules are the same size as iron molecules, so black oxide does not grow or flake. Black oxide is true gun bluing and the oxide found on some drill bits. Black oxide is also seen on iron and steel that has been hot-worked.
I strongly advise folks to stay away from Muriatic acid, as all it will do is erode the base metal, and the iron chloride residual it leaves behind can remain corrosive after the paint is applied just waiting on a scratch to find mioisture !
Hope this info helps !
|Fast Shipping! Most of our stocked parts ship within 24 hours (M-Th). Expedited shipping available, just call! Most prices for parts and manuals are below our competitors. Compare our super low shipping rates! We have the parts you need to repair your tractor. We are a company you can trust and have generous return policies. Shop Online Today or call our friendly sales staff toll free (800) 853-2651. [ About Us ]|
| Copyright © 1997-2015 Yesterday's Tractor Co.|
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V. Yesterday's Tractors - Antique Tractor Headquarters