I don't think any chemical means is safe enough or practical enough. Any
acid will cause hydrogen embrittlement, and electrochemical may also. The
best thing to do is probably to throw in some chains and bolts and roll it
around. Then pour in some epoxy or POR and roll it around.
----- Original Message -----
From: <CLLLSLS@aol.com>
To: <oletrucks@autox.team.net>
Sent: Tuesday, November 02, 1999 7:58 PM
Subject: [oletrucks] Cleaning rust from inside of tank and hydrogen
embrittlement Q's
> Hi,
>
> This isn't exactly oletruck related, but I figured I might get some good
> suggestions from this list.
>
> I'm building a huge pressure feed sand blaster for very fast paint removal
> with plastic blast media. The pressure blaster consists of a tank 18" in
> diameter by 5' long and all the various pipes, fittings and ball valves to
> make it go. However, The inside of the tank I'm using is very rusty. I'ts
> rated for 3000 PSI and it's got 1/2" thick walls so I'm not worried about
the
> tank rupturing at 150 PSI, but I need to get all the scale out of the
tank,
> and if possible, every bit of the rust so it won't clog the pipes or
prevent
> the media from settling. The only access I have to the inside of the tank
is
> through the 2" FPT bungs on each end. I first thought of filling the tank
> with acid to dissolve the rust, but then I realized that Hydrogen
> embrittlement might make the tank prone to rupturing. I've heard about,
but
> never tried, using a solution of molassas and water to dissolve rust and
I'm
> wondering if this too causes hydrogen embrittlement? Will the molassas
> work/got any other suggestions for removing the rust by physical,
chemical,
> telekinetic means? Let me know.
>
> Dustin
> 50 & 53 GMC 1/2 tons ( Both too rusted for plastic media to even scratch,
but
> it'll make me some extra money for buying old truck parts)
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
>
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
|