[SEL] Anyone Ever Used Phosphoric Acid to DeRust

[Orrin Iseminger]

I've tried de-rusting things that have been through a fire.  Some of the
scale seems impervious to anything I threw at it, including electrolysis,
acid, and abrasive blasting.  

The recommendation I've seen for dilution is one part molasses to 3 or 4
parts water. 

Regards, 

Orrin

Orrin Iseminger
Colton, Washington, USA
http://users.moscow.com/oiseming/lc_ant_p/index.htm
So many projects.  So little time.   

-----Original Message-----
From: sel-bounces at lists.stationary-engine.com
[mailto:sel-bounces at lists.stationary-engine.com] On Behalf Of Rupert Wenig
Sent: Friday, November 10, 2006 5:25 AM
To: The SEL email discussion list
Subject: Re: [SEL] Anyone Ever Used Phosphoric Acid to DeRust

	I'm trying to clean up some items that went through a fire and sat 
outside for a year or so. I haven't had much luck using molasses to 
remove rust. I must have had the wrong mixture. What percentages of 
molasses and water do you use?
	

Rupert

Orrin Iseminger wrote:
> 
> For your crankcase, I'd suggest either molasses or a solution of salt and
> vinegar.  Just dissolve as much salt as you can in the vinegar and pour
the
> solution into your crankcase.  It would be cheaper than phosphoric acid
and
> you probably have already have the supplies you need for the job.   
> 
> IMHO, you'll have a slower, more controllable reaction with molasses or
> salt/vinegar.  
> 
> After de-rusting, I'd passivate the surface with Ospho, or similar.  
> 
> Regards, 
> 
> Orrin
> 
--
yvt

Rupert Wenig
Camrose, Alberta, Canada.	
		
http://www3.telus.net/public/rwenig/
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