Your ratio is correct but here is recipe. The finish has outstanding resistance to salt spray greatly surpasses the normal 96 hour salt spray resistance specified for yellow chromates on zinc.
Zinc Plating Diy Pelican Parts Forums
Diy yellow chromate solution. The yellow chromate is a yellowbronze iridescent finish on plated cadmium and zinc. The rinses after after plating should be clean and have a near neutral ph. It is fairly easy process and they say it is not harmful there are plenty of diy instructions online this is the one i followed. Hossein and ahmet belgic england. The only thing you will have to buy special is either clearblue chromate solution or yellow chromate solution. Selling chrome nickel cadmium brass gold silver and metal polishing supplies.
The yellow chromate is a yellowbronze iridescent finish on plated cadmium and zinc. Please share your idea about making a more efficient yellow chromate mixture as well as its operation parameters including temperature ph and thanks. Alkaline non cyanide zinc will plate bright with good yellow chromate adhesion. Liquid concentrate is used at 05 to 3 by volume in water at 65 to 90f. 1 liter 5 white vinegar 100 grams epsom. Per gallon of water and dip the part for approximately 30 seconds dip it into some clean water to rinse it off and stop it from darkening it will look light but as you dry it with a heat gun it will darken a little and it will have an iridescent look.
I have been researching on how a yellow chromate solution is made. Plating kits electroplating kits aluminum anodizing kits gas tank sealer metal polishing buffing supplies. You should then have a predip tank before chromating consisting of 05 nitric acid. I started out wanting to restore the lines for my cis but kept going with a lot of other parts also. The finish has outstanding resistance to salt spray greatly surpasses the normal 96 hour salt spray resistance specified for yellow chromates on zinc. Yes mix up the chromate solution according to the directions 1 2 oz.
Liquid concentrate is used at 05 to 3 by volume in water at 65 to 90f. Do it yourself with plating kits from caswell inc.