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| A lot of gun finishes require that there product be baked . 350 degrees will not harm or stress the metal. I would bead blast or parkerize before spraying on the finish. |
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| He preps the metal before the finish and I have seen his work and it looks good, but I wanted to get educated on heat and gun metals. Thanks Greg |
| | | Posts: 71 | Location: north pole , alaska | Registered: 30 June 2003 | 
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| 375,
We do a fair amount of heat treating of knife blades in salt pots. The low temp post is actually Brownell's nitre molten blueing salts. As a result, I've looked pretty hard at the temps involved for the materials used in firearms.
350F is fine for pretty much any steel that would be used in a firearm. The good news is that there will be very little distortion induced in any reasonable means of getting the materials to that temp.
For materials like 4130 and 4140, higher temps will not cause a problem but at those temps one will have to be very careful about distortion and the process should be left to a professional who is warranting their work.
I have used Gun Kote. It lasts very well if the surface is rough enough before application and very clean. (On one AR15 rifle the spents have not removed the finish from the brass deflection surfaces.) The maker suggest SAND for blasting prior to application. I can tell you that small glass beads are too fine.
Good luck! |
| | | Posts: 6199 | Location: Charleston, WV | Registered: 31 August 2002 |
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| quote:
Originally posted by 375 alaska:
A local gunsmith is known for his finish,arctic kote (gun kote) and he bakes it on @350 degrees and I may have that done to one of my rifles but I always get a second opinion and not sure if 350 degrees will stress the metals or not,looking for advise on gun metals and heat. Thanks Greg
I have two rifle's with Gunkote finishes (1 w/gunkote & 1w/gunkote tefflon-molly)
350 degrees f is not enough heat to harm any steel ![[Roll Eyes]](images/icons/rolleyes.gif) You will love the finished product ![[Big Grin]](images/icons/grin.gif) I accidently soaked my .458 CM bbl/VZ-24 in peat(brown)swamp water for 10 hrs.(ATV misshap) last year ![[Mad]](images/icons/mad.gif) the bore was a little rusty, the gunkote treated surfaces were not affected (the bore is a little pitted but still shoots perfect)
Good luck with your project!! |
| | | Posts: 2361 | Location: KENAI, ALASKA | Registered: 10 November 2001 |
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| Baking GunKote at 350 degrees will not affect the metal and will result in a slightly "harder" and more durable finish than baking at a lower temperature. The main thing in getting a durable finish is proper surface preparation before coatong. Parkerizing or applying K-Phos before coating will also provide better coating adhesion. You can go to the GunKote website, kgcoatings.com, and look at the application procedure to familiarize yourself with it and know what questions you may have for your gunsmith. I have many rifles, shotguns and handguns coated with GunKote as well as other coatings and it has proven to be very durable.
TreeFarmer |
| | | Posts: 262 | Location: PA & VA, USA | Registered: 26 June 2003 |
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| Thanks to all! Greg |
| | | Posts: 71 | Location: north pole , alaska | Registered: 30 June 2003 |
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