Anyone know of any good shops to have a kart chassis powder coated around the Pittsburgh Pa area? Would like someone to sand blast and coat.
You are correct on the temps of baking the powder, however that process is done in an controlled setting with the entire chassis being heated equally, now the sand blasting process is very different with the heat being concentrated to a small area for possibly lengths of time depending on the difficulty of removing the materials, especially in those hard areas and tight welds where you don’t want the heat to be l.. a weld is most likely where heat fatigue can cause damage.. hope this helpsI doubt the sandblasting process will do any damage, you bake it at 350-450 degrees for 10-20 minutes. They make low temp powder but let’s be honest most shops use standard issue hi temp cure powder. I’ve had mine done twice already. I’d say you got a better chance of damaging the chassis with how most strap them as opposed to them undergoing a powder color change.
if they werent abrasive, they wouldnt work. But they dont take away or "pit" the metal like sand does. Im with you on overheating the part via sandblasting. I guess it could be possible? but im guessing you'd already be blowing holes through the material before that ever became a real concern.The thing is there all abrasives . Just not as abrasive .
I can get behind the pitting theory .
Overheating the weld zone via sandblasting , not so much .
I used to work in the paint shop of an auto manufacturer. All bodies were dipped in a phosphate solution(definitely nasty stuff). That phosphates purpose was to etch the metal. So whoever has the idea that chemical stripping a frame is better because it doesnt take off or 'pit' the material like sand blasting is simply wrong(at least with a phosphate solution).B17 Benco is what we used it was a Tri sodium phosphate. Breathing it in darn near put ya out.., it worked great but was a pain and dangerous to have in the shop. So we went back to sand.