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Diffrence in manganese phosphate and Parkerizing.

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6.2K views 5 replies 4 participants last post by  N6CRV  
N
#1 ·
Hello, hope that I might be able to get some info. I have a 1911 and at the back of the slide and the frame there is a small mismatch. The slide is just a little forward on the left side and real close on the right. The gun is Pakerized now. A local Tool making shop said they would refinish the frame and slide for me using the Manganese Phosphate they use on tools. I would be able to get the frame and slide to were they will match up, with a little fileing. But will the finisk look right going over the Parkerizing and will it hold up as well. I have seen the Manganese Phosphate finish and on a smooth finished part it looks like a black bluing. A a non smooth part it sure looks like black Parkerizing. Would it be worth the trouble? There would be no cost in the Manganese Phosphate finish. The mismatch that I have, I have seen on alot of 1911's some worse then mine. Thanks For the help
Don
 
B
#3 ·
As Largo mentions Manganese Phosphating is parkerizing. If you can get it done for free then go for it. If you mate your frame to slide you will have to have the old finish blasted off. WHen I park a pistol I have to blast off all finish so it all matches properly. I am sure the shop doing the work though will have the ability to do this but you might want to ask.
Chris
 
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N
#4 ·
Thanks For the Info.

I will check about if they have a way to remove the old finish. Not sure they would be able to do it. The shop makes tools for cutting for the auto ind. Some of the cutting tools get a manganese phosphate finish. The cutting part is some kind of carbide. If they can't remove the old finish I don't think I will bother with it. Again thanks for the help.
Don
 
D
#5 ·
The part that is being parked will need to be cleaned, degreased, bead/media blasted (some prefer aluminum oxide to glass) then cleaned and degreased again. Then it will be dipped in warm maganese phosphate for about 10 minutes. Once the metal has taken all the color that it can, it will need to be immediatley rinsed and then cleaned again. I would then let it sit for about 6 hours before re-assembling the gun. If you want to read more about parkerizing, try this link:
http://www.parkerizingtanks.com/yabbse/index.php
Deez.
 
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