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Posted: 7/3/2008 12:29:38 PM EDT
| Has anyone had their lowers or mags powder coated? If so how did it stand up, affect tolerances? |
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Am I missing something here? Most of the spray bake finishes require heating to 300 degrees for 30 minutes or so. Is that risky to aluminum too? EDIT-came back to this thread and a whole lot of posts that were before mine are not there. So if my post does not make any sense that is why. |
If you use Columbia's candy colors over aluminum it produces a nice, unique finish. Cool on the expansion into anodizing |
actually norells moly bakes at 300 for an hour. ive rockwell hardness tested before and after and came within one point of each other. now i have hardness tested some that were in fores and they were like 50 points off. |
I doubt it since most epoxy finishes bake around this temp for at least a hour or so I'm sure the front of my upper reciever threads have been over that temp on more than 1 occasion. It seems to be doing fine. |
While your rough idea is correct (bake-on finishes can affect the heat treatment), your technical info is way off. You cannot "draw the temper" of a T6 to a T0. T0 is a solution annealed state, achieved by heating to almost 1000F and water quenching. The most you can do while refinishing is overage the aluminum to a T651 or T7 condition. And, since the aging temperature of 7075-T6 is 325-350F, yes, it is something you could do when Duracoating your receiver. I have been warning people of this on these forums for a couple of years now. Mind you, as has already been pointed out, the difference between the T6 and T651 conditions is very small. I can't say specifically what effect it might have on the magazines, as I don't know what they are made of. Probably 2024 or something similar, but I am not sure. |
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