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hot black oxide

Keeping your firearms functioning properly and repairs

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Rbadbadger
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hot black oxide

Postby Rbadbadger » Wed Jun 01, 2011 8:51 pm

I'm curious..can hot black oxide be used the same way as "hot blueing"? For barrels and such? Just wondering if its completely different or what. Thanks

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SR9
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Postby SR9 » Thu Jun 02, 2011 7:25 am

Short answer is yes. The process produces fumes and uses a number of chemicals.

http://www.finishing.com/faqs/blackoxide.html

I have not used the hot process but re-finished a rifle using the cold process. Pictures are here :

http://www.ctshooting.com/modules.php?name=Forums&file=viewtopic&t=2478

It looked great when it was done a seemed durable enough but over time it went from a very dark grey(almost black) to a light grey. Every time I wipe it down I get some iron oxide on the rag. Not really an issue but not clean like other coatings.

One thing I learned is that the metal MUST be cleaner than you think. Stripping followed by glass beading with soap and water clean up is not enough. I ended up using a chemical metal prep and then had success with the black oxide.

I think if I do it again I would try the Duracoat process. In fact, if you are not wild about doing it yourself, Mike-Sid does that type of coating.

Bottom line is hot processes involve hazardous materials, require the correct equipment and need to be done very carefully to come out right.
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Rbadbadger
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Postby Rbadbadger » Thu Jun 02, 2011 8:49 am

Well the reason I ask, is that the shop I work in, has a black oxide line, they have the heavy chemical degreasers, wash tanks, hot black oxide tank, the works. I wanted to know if I could throw the barrel of my Glock in there, Previous owner didn't take very good care of it AT ALL. Stupid of me for buying it. But I guess that's what I'm gonna be doing tonight! lol thanks SR9

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hayes1966
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Postby hayes1966 » Thu Jun 02, 2011 9:43 am

Try with a piece of steel first and use regular gun cleaning solvents to see how effective it is.
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SR9
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Postby SR9 » Thu Jun 02, 2011 10:16 am

Rbadbadger wrote:Well the reason I ask, is that the shop I work in, has a black oxide line, they have the heavy chemical degreasers, wash tanks, hot black oxide tank, the works. I wanted to know if I could throw the barrel of my Glock in there, Previous owner didn't take very good care of it AT ALL. Stupid of me for buying it. But I guess that's what I'm gonna be doing tonight! lol thanks SR9


Sounds like you are well equipped. Generally, it is a good idea to plug the ends of the barrel to keep any caustic cleaners and the oxide out. Go for it.
"Those who make peaceful revolution impossible will make violent revolution inevitable." - John F. Kennedy 1962



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WLOPA : http://www.wlopa.com/index.htm

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Rbadbadger
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Postby Rbadbadger » Fri Jun 03, 2011 12:14 am

Well, I did my Glock Barrel tonight, and WOW did it come out nice, after I put it back together and oiled it up it looks brand new. I wish I took a before and after picture...But I don't think that far ahead!!

Next...To black oxide my bent mosin bolt!!!! haha

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Postby SR9 » Fri Jun 03, 2011 7:07 am

Glad to it came out good. Take a picture and post it some time. have fun.
"Those who make peaceful revolution impossible will make violent revolution inevitable." - John F. Kennedy 1962



NVPL : http://www.nvpl.greatatlantictrophy.com/

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