OzVMX Forum

Clubroom => Tech Talk => Topic started by: Gippslander on July 18, 2014, 10:33:06 pm

Title: Does powder coat harden up?
Post by: Gippslander on July 18, 2014, 10:33:06 pm

Does powder coat harden up or is it as hard as it ever gets when the job is done?

Title: Re: Does powder coat harden up?
Post by: GMC on July 18, 2014, 10:36:03 pm

to the best of my knowledge it stays the same after it cools

Title: Re: Does powder coat harden up?
Post by: Gippslander on July 18, 2014, 10:45:36 pm

Thanks,  I'm getting some car alloy wheels done a mat grey and the tyre fitter asked because he said if it hardens like ordinary paint we will wait a while before fitting the tyres up

Title: Re: Does powder coat harden up?
Post by: GMC on July 18, 2014, 10:49:23 pm

Once cooled I can pull bits out of the oven and hit them with a rubber mallet if necessary.
Just make sure your powder coater doesn't put it on too thick as it may chip easier

Title: Re: Does powder coat harden up?
Post by: cyclegod on July 18, 2014, 10:53:10 pm

You should ask your tyre fitter to put rim savers in when fitting, they are like a plastic lip that covers the edge of the rim but they are slippery to allow the tyre to pass over it and removed before inflating.

Title: Re: Does powder coat harden up?
Post by: Digga on July 19, 2014, 10:14:42 am

Powder coating is applied via electrostatic gun & will generally be around the 60 - 100 microns in thickness. Think of it as a plastic coating which is applied as a dry powder & fused/melted in an oven generally 30 mins at around 200 - 230 C.

There are various hybrid powder coats around but the main one used will be polyester. Once cured it will be as hard as it will ever get & is always vulnerable to chipping dut to the film thickness & it is a coating always under stress (glass like).

For best performance, the substrate metal should be shot blasted to clean & roughen the surface as a good key base, followed by a suitable chemical cleaning/pre-treatment to help the powder bond better.

Title: Re: Does powder coat harden up?
Post by: Nathan S on July 19, 2014, 12:06:31 pm

Does powder coat harden up?
No, it's always a cry-baby.


I'm here all week. Try the steak.

Title: Re: Does powder coat harden up?
Post by: bishboy on July 19, 2014, 12:46:49 pm

Maybe you could give it a spray of this... ;D

  (http://i388.photobucket.com/albums/oo330/bishboy/Miscellaneous/canofHTFU_zpsb20f8e70.jpg) (http://s388.photobucket.com/user/bishboy/media/Miscellaneous/canofHTFU_zpsb20f8e70.jpg.html)

Title: Re: Does powder coat harden up?
Post by: Tim754 on July 22, 2014, 10:17:31 am

Mix blue pills with it ;)

Title: Re: Does powder coat harden up?
Post by: 80-85 husky on July 22, 2014, 10:29:27 am

try the steak..  I love it :D ;) haven't heard that one in years....

Title: Re: Does powder coat harden up?
Post by: Gippslander on July 22, 2014, 11:08:56 am

Thanks for the answers, can now ask the powder coater what he uses and ask if he keeps it to a thin coat