[TheForge] Metallurgy and Powder Coating

[peter fels]

Good to know, thanks Andy.

On May 31, 2011, at 5:59 AM, Andrew Vida wrote:

> You NEVER ever powder coat aluminum SCUBA tanks for those precise 
> reasons.  I have heard several third-hand accounts of this happening. 
> Ignorance can be very dangerous.
> 
> Ron Childers wrote:
>> Craig,
>> 
>> A friend of mine, a famous cave diver, had a fancy paint job done on his
>> aluminum scuba cylinders and it was baked on. The heat apparently
>> weakened the metal to the extent it exploded during the first fill
>> causing serious injury and the schrapnal wreaked havoc with the dive
>> shop. I don't know the baking heat or the alloy of the cylinder, but it
>> did weaken it. You might consider anodizing if you want a pretty color.
>> Ron C
>> 
>> -----Original Message-----
>> From: theforge-bounces at mailman.qth.net
>> [mailto:theforge-bounces at mailman.qth.net] On Behalf Of Craig Schaefer
>> Sent: Friday, May 27, 2011 11:41 PM
>> To: Blacksmithing List Sponsored by ABANA
>> Subject: [TheForge] Metallurgy and Powder Coating
>> 
>> I have some aluminum alloy motorcycle brake calipers and wheels that I'd
>> 
>> like to powder coat.   Would I weaken the aluminum by the heating
>> process to 
>> the 400-500 degree range?
>> I know others offer the service, but that doesn't mean it's a good idea.
>> 
>> CraigS
>> Gresham, OR 
>> 
>> 
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