Home > Technical > Paint steps over Molten sprayed Zinc - Any painters around? |
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Moneypit Member Since: 27 Feb 2018 Location: North Yorkshire Posts: 271 |
To get paint to adhere to a galvanic thermal metal spray you would normally use a mordant solution such as T Wash.
https://www.galvanizing.org.uk/painting-galvanized-steel/ If you need more detailed info I can ask a friend who is a Level 3 paint inspector. |
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5th Dec 2018 10:44pm |
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No 6 Member Since: 03 Jul 2018 Location: West Sussex Posts: 65 |
That's what I'm not sure about, its not the typical galv finish, that's dipped at 450 degrees into molten zinc the finish is bright like the below.
Click image to enlarge This is mine below, dull finish almost like primer, if it's sanded it brightens a little here and there. The finish is rough under hand (needs flatting back a little) but a good key and base for the next stage. I don't think adhesion will be an issue. Click image to enlarge This is the link to what and where it was done. They've done a cracking job, very careful not to warp anything, just not sure what product it actually needs. http://www.blastreat.co.uk/wp/zinc-spray/ |
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6th Dec 2018 12:03am |
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Moneypit Member Since: 27 Feb 2018 Location: North Yorkshire Posts: 271 |
We use it at work to build up old or out of spec steel, the potential issue for me would be that things like bulkheads rot from the inside out.
Aluminium has almost all the advantages of Zinc without the main disadvantage, which is weight of the finished coating. What did the company recommend? |
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6th Dec 2018 6:27am |
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hank Member Since: 12 Sep 2016 Location: South Wales Posts: 2298 |
Retropower use this process, it is shown on the Gordon Murray's MK1 Escort series. One of the episodes shows the zinc spraying and then details the paint process afterwards - definitely worth a watch for you
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6th Dec 2018 7:05am |
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pj2106 Member Since: 20 Dec 2012 Location: Huntingdon AKA The Shire Posts: 1500 |
You want galv in one from buzzweld and I would use fx2k liner for the stone chip or raptor
Www.buzzweld.com 2008 110 2.4 XS Utility (Hagrid) 2002 90 TD5 Hardtop (Sully) Sold 1998 300TDi D1 (Billy) Sold |
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6th Dec 2018 7:16am |
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No 6 Member Since: 03 Jul 2018 Location: West Sussex Posts: 65 |
Thanks for the responses, especially the videos, already watched a few more!
Moneypit, they just said it was a good sacrificial base, the two videos Hank kindly posted confirm this and on the chassis of the escort advise the Zinc will corrode instead of the steel even if exposed through the stone chip. I bought the stone chip today, UPOL Gravitex, I've had excellent results with this before. The product I'm unsure about is what I paint on over the externally visible parts of the bulkhead, pillars corners vents etc. I'm guessing a 2k epoxy to weather proof then topcoat but does the Zinc need a barrier coat? |
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6th Dec 2018 9:28pm |
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TopQ1967 Member Since: 14 Feb 2012 Location: Veghel Posts: 236 |
Shotblast (light)
Than epoxy primer |
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19th Dec 2018 5:28pm |
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