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Zink Phosphate..How do you do it ??? #1068973
09/04/11 11:58 AM
09/04/11 11:58 AM
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NORTHERN VA
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We got a kit (pawmetto ent)to do the zink phosphate at home. You heat up the water to around 200 deg and mix in the zink phosphate and then dip the prepped part to darken it. How do you heat the water and keep it heated for larger parts ?? I think a hot plate and a stainless pot will work for the smaller stuff but what about larger parts that are way to big for a pot. Were thing a plastic drum but how would you keep the water heated to 200 deg while the part soaks ??

Re: Zink Phosphate..How do you do it ??? [Re: THESHAKERPROJECT] #1068974
09/04/11 12:10 PM
09/04/11 12:10 PM
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I built a tank & welded a bung for a 220v water heater element into it....


"The Armies of our ancestors were lucky, in that they were not trailed by a second army of pencil pushers."
Re: Zink Phosphate..How do you do it ??? [Re: 1_WILD_RT] #1068975
09/04/11 12:44 PM
09/04/11 12:44 PM
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NORTHERN VA
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We have a plastic 55 gal drum to use but need a way to heat the water and keep it heated for like 15 min for each dipped part. We would probally use about 5 to 6 gal of water for the bigger parts and the heater need to be 110v...

Re: Zink Phosphate..How do you do it ??? [Re: THESHAKERPROJECT] #1068976
09/04/11 12:52 PM
09/04/11 12:52 PM
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There are plenty of 110 heater elements.. The trick will be finding a glue that will bond to the barrel & steel effectively... Might be able to fab a couple steel plates to weld a bung in & sandwich the barrel then you'd just need to find a sealant & that shouldn't be to hard.... Oh yeah you need to make a guard to protect the heating element..


"The Armies of our ancestors were lucky, in that they were not trailed by a second army of pencil pushers."
Re: Zink Phosphate..How do you do it ??? [Re: 1_WILD_RT] #1068977
09/04/11 02:39 PM
09/04/11 02:39 PM
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IL, Aurora
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ademon Offline
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I use machinist tool black, heres a crummy pic of the horn bolt, works fine

Last edited by ademon; 09/04/11 02:40 PM.
Re: Zink Phosphate..How do you do it ??? [Re: ademon] #1068978
09/04/11 02:44 PM
09/04/11 02:44 PM
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ademon Offline
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Not sure how it will hold up in rain and salt, mines a weekend summer cruiser and looks fine for the last 5 years. link:
http://www.mcmaster.com/#tool-blackening-kits/=dx21cu

Re: Zink Phosphate..How do you do it ??? [Re: ademon] #1068979
09/04/11 06:43 PM
09/04/11 06:43 PM
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NORTHERN VA
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Quote:

I use machinist tool black, heres a crummy pic of the horn bolt, works fine


Yeah, the tool black is the same stuff Eastwood sells and is not a zink phosphate coating . It does look OK but real zink phosphate is more of a flat greyish/black coating. Im actually working on a lot of GM (Oldsmobile)parts these days.

Re: Zink Phosphate..How do you do it ??? [Re: THESHAKERPROJECT] #1068980
09/04/11 09:52 PM
09/04/11 09:52 PM
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ademon Offline
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Quote:

Quote:

I use machinist tool black, heres a crummy pic of the horn bolt, works fine


Yeah, the tool black is the same stuff Eastwood sells and is not a zink phosphate coating . It does look OK but real zink phosphate is more of a flat greyish/black coating. Im actually working on a lot of GM (Oldsmobile)parts these days.


the bolt came out nice greyish/black compared to the horn bracket that is freashly painted satin black.

Re: Zink Phosphate..How do you do it ??? [Re: THESHAKERPROJECT] #1068981
09/05/11 11:23 AM
09/05/11 11:23 AM
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It's a dry heat
gtx6970 Offline
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It's a dry heat
I send it here.
http://dynamicrenovation.net/refinishing.php

I have one of the Eastwood black zinc kits.
And IMO - for the costs compared to the result, I'll send them to Neil at Dynamic

Re: Zink Phosphate..How do you do it ??? [Re: gtx6970] #1068982
09/05/11 11:37 AM
09/05/11 11:37 AM
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Thanks Bill, that a great tip as I did not know they did replating .

Re: Zink Phosphate..How do you do it ??? [Re: THESHAKERPROJECT] #1068983
09/06/11 02:14 PM
09/06/11 02:14 PM
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Iowa
burdar Offline
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I'm using a black oxide solution from Caswell Plating. You can play with dip times to get the color you want. Once the fastener is blackened, you can buff it with a shop rad and it will turn gray. I think it looks close to phosphate. I originally used Caswells sealer but it has to be applied thick in order to do its job. If you buff the fastener after applying the sealer, it will start rusting again. I've started applying RPM to all the fastners now.

I only mixed up half of the consentrate and it's still going strong. Half the consentrate will probably do an entire car. It was only $25.00

Re: Zink Phosphate..How do you do it ??? [Re: burdar] #1068984
09/06/11 02:41 PM
09/06/11 02:41 PM
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Scottmon Offline
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Zinc phosphating is the same thing as Parkerizing on guns. Go to Brownell's and order up a Parkerizing kit.

Re: Zink Phosphate..How do you do it ??? [Re: Scottmon] #1068985
09/07/11 12:54 AM
09/07/11 12:54 AM
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Quote:

Zinc phosphating is the same thing as Parkerizing on guns. Go to Brownell's and order up a Parkerizing kit.



Yup do it on the kitchen stove when the wife isn't looking


NS1AAR
Re: Zink Phosphate..How do you do it ??? [Re: Scottmon] #1068986
09/07/11 01:02 AM
09/07/11 01:02 AM
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Quote:

Zinc phosphating is the same thing as Parkerizing on guns. Go to Brownell's and order up a Parkerizing kit.




Great Idea but it's showing as out of stock & probably won't be back in stock as long as the EPA continues to roam the earth....


"The Armies of our ancestors were lucky, in that they were not trailed by a second army of pencil pushers."
Re: Zink Phosphate..How do you do it ??? [Re: 1_WILD_RT] #1068987
09/07/11 12:01 PM
09/07/11 12:01 PM
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Louisville, KY.
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Re: Zink Phosphate..How do you do it ??? [Re: THESHAKERPROJECT] #1068988
09/09/11 07:10 PM
09/09/11 07:10 PM
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St. Louis
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Imrare Offline
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Use PPG DX 520. It is a phosphoric acid based coating chemical (easy to work with using regular latex gloves, if any) that will produce a zinc phosphate coating on galvanized or steel surfaces. Bead blast the parts first, soak them in the DX 520 solution for about 10 minutes or until they have reached the level of color you want and then remove from the solution, dip in water to neutralize the process, blow off with an air gun to dry, and coat with a thin coat of WD-40 type oil (unless your painting them and then just prime or paint right over the phosphate). DX 520 can be purchased at your PPG paint store. I've been using this method for years on my nuts, bolts, suspension parts, on my resotrations. Even if I'm going to paint a small part, I will phosphate coat it first because it protectects it from corrosion while I'm waiting to paint.

Re: Zink Phosphate..How do you do it ??? [Re: Imrare] #1068989
09/09/11 08:03 PM
09/09/11 08:03 PM
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I'd say after coating, you could rub with some RPM from ECS and it would be sealed forever.

Atleast thats what I'm going to try with the PPG520.

Re: Zink Phosphate..How do you do it ??? [Re: cdp] #1068990
09/12/11 12:11 AM
09/12/11 12:11 AM
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Ok, that is how you do the Phosphate, what about Yellow zinc? Is that a plating process or a conversion coating? Tim

Re: Zink Phosphate..How do you do it ??? [Re: astjp2] #1068991
09/12/11 12:32 PM
09/12/11 12:32 PM
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Iowa
burdar Offline
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The part is plated in silver zinc first. Then it is placed in another solution to get the yellow color. Any electro plating company can do it. I had a large batch of fasteners barrel plated for only $40.







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