I'm wanting to Powder Coat over some parts that have been Zinc plated................is this possible?
Cheers
Craig T
dont think so as it reacts with heat causes bubbling
what reacts with heat ?
the zink if its new it fumes and causes the powder to bubbel
Oh OK..............I didn't know there was heat generated when powder coating.
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.
Does that hurt Owen??
Owen would hurt for a while....oven will take it...
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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
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
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
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
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.
Craig,
just hop in and we'll work it out...this is what I do for living...