Framebuilders - powdercoating

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trekker32
01-30-06, 03:11 PM
hi there,
ive noticed a few folks have had their bikes powder coated, and i want to do the same to an old raleigh lugged steel frame i have but i was talking to the powder coater and he said the curing process on powder coat is 375 - 400 degrees for 20 minures. my question is...will this weaken the braze and weaken the steel in general?
id love to hear some opinions on this thanks!!!

trekker

Nessism
01-30-06, 03:16 PM
No worry. The critical temp for steel is over 1000 degrees F.
trekker32
01-30-06, 03:18 PM
im not really worried about the steel...im worried about the brazing metal ...its melting temp is less than the steel right? but still i dont think 375-400 would be too much....but not sure

jpogge
01-30-06, 07:02 PM
we do powder coating at my shop and we frequently do lugged frames with no problem. the melting temperature for brass or even silver is higher than 400 degrees.
trekker32
01-30-06, 10:44 PM
hi jpogge,
thanks alot...i thought as much but wanted an opinion from a more knowledgable source than myself!

trekker
NoReg
02-02-06, 03:05 PM
400 was probably picked because it is low end of significant effect on heat treatable steel. If you tig welded a frame, it might help relieve a little hardness, if it had any discernable effect at all.