the urban legend regarding powdercoating causing issues with wheels is NOT true.
the temperature for aluminum melting is far above the temps used in powdercoating.
It's really a shame that powdercoating is given this bad label... Powdercoating is done at temps under 400 degrees.
http://www.crosslinktexas.com/faq.htm
" Q. What is typically Powder Coated?
A. Any metal or conductive parts withstanding 400 F temperature and requiring resistant, aesthetically appealing coating against corrosion and oxidization. Powder coating is extensively used by the appliance, automotive, agricultural equipment, electronics, fabricated steel, fitness and sporting goods equipment, furniture, garden equipment, medical equipment, office equipment and store fixture industries. "
Aluminum alloy melts at something like 2-3x that temp..
See
http://www.kenwalt.com/DiecastingAlloys.pdf
" Aluminum and magnesium alloys are considered to be moderate melting point
alloys, being cast in the 1150°F to 1300°F (621°C to 704°C) range. "
With respect to re-heating the metal... the temps used in powdercoating are nowhere near what it takes to melt the metal... However... even if it were close.. consider the example of Wheel repair. Having seen wheels being repaired, a torch is used to heat the metal to the point where it is soft, and a blacksmith (lost art ) works the metal back into shape and then lets it cool.. Just like in the good old days when Sir Launcelot would damage his sword... A blacksmith would heat it up.. repair it... and back into the fray goes the Knight.
Wheel repair companies provide a LIFETIMT gaurantee. If a wheel repairer heats up a wheel to actually where the metal is soft enough that it is malleable enough to be worked back straight... and then can be warranteed for LIFE... powdercoating is far less stress on the metal... In fact.. I would wager.. little to no stress.
As far as a possible company.. perhaps check out Cross Link Powdercoating... they have a Dallas location I have used with success, and appears there is a location in Conroe.
http://www.crosslinktexas.com/faq.htm