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topic 52237

Applying a color onto a Zinc Die Casting


A discussion started in 2009 but continuing through 2020

May 1, 2009

Q. I am the VP of Manufacturing and Engineering for a cable and conduit fittings manufacturer. We are looking for an efficient and inexpensive way to apply a blue color onto on of our ZAMAK 7 die cast zinc components. The color will be used for identification in the field. Internally, we only have the capability for zinc plating over steel.

We have tried a "Dykem" type of die system, which leaves much to be desired. Due to RoHS restrictions, we need to stay away from chromate or anything related to it. Is there a type of anodizing or other similar process that can be used on Zinc? My main concern is cost, and then coating buildup (due to internal threads).

What other options are there for applying a medium blue color to the surface of the zinc die casting?

Any suggestions would be much appreciated.

Larry Smith
VP Mfg & Eng. - Stratford, Connecticut, USA


May 28, 2009

A. Plated zinc can be dyed any number of colors, so I do not see why a casting could not be dyed, possibly with an activation step. Check with the larger companies that sell dye for zinc.

James Watts
- Navarre, Florida


May 31, 2009

A. There are at least 4 possible processes-blue colour for zinc , lustre colour for zinc(blue is one of possible colors) , blue nickel plating,and blue colored copper plate on zinc.Try to buy old but still very good book on metal coloring by D.Fishlock.Hope it helps and good luck!.

Goran Budija
- Zagreb, Croatia



Color Dying Ink-Washed Zinc Figurines

February 28, 2020

Q. I have 36 metal figurines that I'd like to dye 9 different colors for aesthetic purposes.

4x Red (Pantone 711C)
4x Orange (Pantone 158C)
4x Yellow (Pantone 7409C)
4x Green (Pantone 575C)
4x Aquamarine (Pantone 7465 C)
4x Blue (Pantone 307C)
4x Purple (Pantone 2612C)
4x White (Pantone White)
4x Black (Pantone 426C)

52237-1

I don't need the colors to be exact, but I'd like them to be pretty close. I'm also looking for the color to still come through- I don't want it to be opaque, I want to still be able to tell that the figurines are metal.

The figurines are made of "inkwashed Zinc".

Looking for DIY solutions, as well as potential project bids.

Cody Simonsen
Hobbyist - Provo, Utah, USA
  ^- Privately contact this inquirer -^

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