On Mar 2, 8:22*am, Karl Townsend
wrote:
On Fri, 2 Mar 2012 04:51:12 -0800 (PST), Stanley Schaefer





wrote:
On Mar 1, 6:08*am, Karl Townsend
wrote:
I'm looking for a few lbs. of chromium nitrate. its used in
parkerizing solution for parking guns. I'm making my own concentrate.

You can get 20 metric tons from china for pennies a lb. or I found
reagent grade for $35 a lb. on eBay.

Any ideas on places to search?

Karl

???? *I've done home-made parking, didn't use anything like that.
What's your source for the weird receipe? * I used manganese dioxide,
phosphoric acid, a little hydrochloric acid for etching and a small
wad of steel wool. *That's it. *No nickel, no chrome. *All available
from Lowes or Home Despot except the manganese dioxide, that came from
the local pottery supply. *If you want to do zinc parking, add a penny
or a chunk of battery casing. *Used a stainless hot table tray from a
restaurant supply for a tank. *Plenty of sites for doing military-
style parking, none use nickel or chrome compounds. *No nitrates,
either, it's a PHOSPHATE finish.

Stan

First, sorry for the brain fart, Its nickle nitrate. I'm just
following the military specification: *MIL-P-500002B from Aug '81

I've got a 20 gallon tank and plan on parking all sorts of items. Its
a great finish, not just for weapons. No increase in thickness, holds
oil and don't rust.

I ordered a life supply of MNO2 and already have a bunch of H2PO4

Karl- Hide quoted text -

- Show quoted text -

Haven't been able to find that one. What's the advantage over the
standard managanese or zinc versions that have been used for 80 years
or more? Everything you list applies to the regular stuff, too. With
what you have, you're ready to go as-is.

As far as doesn't rust, that's a function of the oil/grease holding
ability, the iron phosphate coating IS porous and you can get a rusty
surface, just not as fast as a bare steel surface. Have a bunch of
rusty surplus parkerized Thompson magazines that prove that. It does
make a superior prep coating for baked enamel coatings, though.

Stan