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Powder Coating bbl action?

 
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  #1  
Old 02-20-2006, 03:37 PM
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Powder Coating bbl action?

Ok guys, gurus...i have a customer that wants to powder coat his 308 chrome moly bbl. It takes 450 degrees to do the process, any one did this or think it may damage the bbl. Nitre Bluing is 450deg also, just never done it on rifle bbls, just small parts. Has anyone did this or heard about it being done?
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Old 02-21-2006, 07:11 AM
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Re: Powder Coating bbl action?

Can't help you on the gun parts, but I have a few friends who have done up their big surf rigs. IF you want I can get you the contact info for the fellow who is doing the work for them. He might be able to shed some light on it.
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Old 02-21-2006, 03:31 PM
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Re: Powder Coating bbl action?

Thanks Mike, I know the process, just was worried about the temps on the barrels, any effects that may occur.

Dave
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Old 02-23-2006, 02:00 AM
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Re: Powder Coating bbl action?

Have you guys ever considered the TiAIN coating? Have a look on the web it works really well.
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Old 02-23-2006, 08:14 AM
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Re: Powder Coating bbl action?

Black Diamond,

Is the 450 degrees F or C?

AISI 4130 chrome-moly is tempered at temps as low as 480 C (900 F). If it was 450 C I would think it could definately affect the microstructure.

Do you know or can you find out what specific chrome-moly the barrel is made from, and possibly what tempers or anneals it has seen?

Carl
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Old 02-23-2006, 09:04 AM
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Re: Powder Coating bbl action?

I have since found out that Powder Coating is being done on barrels. Rifle barrel steel is 4140, tempered to 1100 deg. You must take extra care in plugging the bore and chamber area, Powder coat will seep in the smallest openings. You cant use tape because of the high temp.

I have also looked into using the Tialn coatings for my Alum actions, It is sprayed on in some sort of vacuum, may work for a bbl, but an action might not get full coverage, so says the tech staff.
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Old 02-23-2006, 10:45 AM
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Re: Powder Coating bbl action?

Have you given any thought to duracoat?

Don't know if it's as robust as powder coat but is sure easier to get along with. Doesn't seep or run, but I'm using an airbrush and doing plenty of design things. Not flat patterns. Just a beginner though.

Ah, the challenges [img]/ubbthreads/images/graemlins/wink.gif[/img]
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