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Can you Powder Coat over fresh Zinc plating ?

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Craig Torrens 6 times Australian, 7 times State Hillclimb Class Champion

8,040 posts · joined Jan 2003 ·

#628817
I'm wanting to Powder Coat over some parts that have been Zinc plated................is this possible?

Cheers
Craig T


greedy53 Bishop of Volkswagenism

3,062 posts · joined Mar 2006 ·

#628847
dont think so as it reacts with heat causes bubbling
👍👍😂🙅🥷😬🤓

Craig Torrens 6 times Australian, 7 times State Hillclimb Class Champion

8,040 posts · joined Jan 2003 ·

#628853
what reacts with heat ?


greedy53 Bishop of Volkswagenism

3,062 posts · joined Mar 2006 ·

#628865
the zink if its new it fumes and causes the powder to bubbel
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Craig Torrens 6 times Australian, 7 times State Hillclimb Class Champion

8,040 posts · joined Jan 2003 ·

#628866
Oh OK..............I didn't know there was heat generated when powder coating.


cb john Wolfsburg Wizard

470 posts · joined Jun 2007 ·

#628867
Yes , you can. In the case that you really want the blemish free finish, ask powdercoaters to " de-gass "the parts, which means to pass it through the owen before applying the powder.

56astro Custom Title Time!

1,772 posts · joined Aug 2002 ·

#628868
Does that hurt Owen??

😂

VW car, VW engine ...... keepin it "real"
35MPG on 101.3kPa

cb john Wolfsburg Wizard

470 posts · joined Jun 2007 ·

#628869
Owen would hurt for a while....oven will take it...

65busser Moderator Custom Title Time!

1,795 posts · joined Nov 2002 ·

#628890
Does that hurt Owen??
That's very funny. 😂
I had the rear blind for my Fasty zinc plated. I wonder if you can use any Owen? I know one, but I don't think he'd cop the blind.

www.busnbug.com

silver Dangerous when poked

2,169 posts · joined Dec 2002 ·

#628931
I had any part small enough on my spltty Yellow zinc'd, was, so I was told, good for 5000 salt hrs (what ever that means) and then powdercoated 4 years ago no problems
Window frames and channels Emblem Hinges ect all done, all still fime

Finished coatings pty ltd Moxon Road Riverwood
Its only money
Keeping it real !

ztnoo Insano Dub Head

730 posts · joined Aug 2007 ·

#629061
I don't know what the do it yourself situation is there in Oz, but lots of guys here in the US do smaller parts themselves.
You fellas may have similiar equipment available to you there.
All you really need besides the spray powdercoating equipment is an oven you can dedicate for curing only......i.e. no cooking in it after you use it for powdercoating.
Of course for larger parts, a commerical coater is about your only choice.
Here's a company many do it yourselfers use here in the states with the spray equipment and coatings:
http://www.eastwoodco.com/jump.jsp?itemTylpe=CATEGORY&itemID=458

Fine tuning the proper daily ratio of Maxwell House to Bacardi 151.........

* Don't worry about the world coming to an end today. It's already tomorrow in Australia !

lauzboy Seriously Crusin Dubber

177 posts · joined Mar 2005 ·

#629153
craig,

u should remove the zinc coating first. the heating is one thing but its the base layer thats the prob

basically the earth ure parts, then spray it with powder coat which is ionised, so it sticks to the parts. then the bake it which forms a hard coating.

the zinc underneath isnt nearly as good a base for the powder coat to adhere to.

are u taking it to a professional place or doing it ureself? if u take it to a professional place they should sandblast as part of the preparation process (clean off dirt and also abrade the surface slightly). if they do, this will rip off the zinc. ive used the sandblaster at work on zinc parts and it comes off EASY!

theres a place in seven hills just off windsor rd if ure around that area

Craig Torrens 6 times Australian, 7 times State Hillclimb Class Champion

8,040 posts · joined Jan 2003 ·

#629156
Thanks for the info.........................I basically have a lot of tinware, suspension parts etc etc that I want to get powder coated (for the country buggy and other resto projects). I thought it may have been easier to take the items to the electroplaters to be cleaned and plated (which is cheaper than paying for sandblasting) and then get them powder coating................I guess not !

Is the Seven Hills place good?

PM there details if they are !!!

Cheers
Craigt


cb john Wolfsburg Wizard

470 posts · joined Jun 2007 ·

#629202
Craig,
just hop in and we'll work it out...this is what I do for living...