| [ Total Views: 911 | Total Replies: 14 | Thread Id: 67076 ] |
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 Craig Torrens
A.k.a.: Craig Torrens
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| posted on January 19th, 2008 at 12:42 PM |
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Can you Powder Coat over fresh Zinc plating ?
I'm wanting to Powder Coat over some parts that have been Zinc plated................is this possible?
Cheers
Craig T
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greedy53
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| posted on January 19th, 2008 at 05:28 PM |
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dont think so as it reacts with heat causes bubbling
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Craig Torrens
A.k.a.: Craig Torrens
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| posted on January 19th, 2008 at 05:50 PM |
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what reacts with heat ?
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greedy53
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| posted on January 19th, 2008 at 07:17 PM |
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the zink if its new it fumes and causes the powder to bubbel
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Craig Torrens
A.k.a.: Craig Torrens
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| posted on January 19th, 2008 at 07:24 PM |
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Oh OK..............I didn't know there was heat generated when powder coating.
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cb john
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| posted on January 19th, 2008 at 07:25 PM |
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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.
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56astro
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| posted on January 19th, 2008 at 07:29 PM |
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Does that hurt Owen??
VW car, VW engine ...... keepin it "real"
35MPG on 101.3kPa |
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cb john
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| posted on January 19th, 2008 at 07:36 PM |
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Owen would hurt for a while....oven will take it...
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 65busser
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| posted on January 19th, 2008 at 09:04 PM |
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| Quote: |
Does that hurt Owen??
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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.
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silver
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| posted on January 20th, 2008 at 12:40 AM |
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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 !
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ztnoo
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| posted on January 20th, 2008 at 11:20 PM |
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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 ! |
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lauzboy
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| posted on January 21st, 2008 at 06:15 PM |
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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
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Craig Torrens
A.k.a.: Craig Torrens
Scirocco Rare
6 times Australian, 7 times State Hillclimb Class Champion
Posts: 8040
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Registered: January 10th, 2003
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Location: Sydney
Theme: UltimaBB Pro Blue ( Default )
Mood: Time to go Salt lake racing, and actually achieve a result.
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| posted on January 21st, 2008 at 06:33 PM |
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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
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 helbus
A.k.a.: Pete S
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| posted on January 21st, 2008 at 06:33 PM |
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Millions of zinc wire and zinc coated tube items are powder coated every year. Pretty fresh zinc coating, and regular powder coating. I would say it
can be done.
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cb john
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| posted on January 21st, 2008 at 10:16 PM |
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Craig,
just hop in and we'll work it out...this is what I do for living...
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