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Black Chromating Iron Castings

We want to know how to do black chromating on Iron Castings - the process?

Angou Mourougane
- Coimbatore, Tamil Nadu, India
2002

2002

Your question is broad and vague :-)

Iron is not and cannot be directly chromated. It must be zinc plated or zinc-iron plated first. But most zinc-iron baths are alkaline and may not be suitable for plating onto cast iron. If you tell us who you are, why you want to know, and what you are trying to achieve, we may be able to suggest what to do.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
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Need project assistance? $100/hr.

Also the part function, and the spec for surface treatment.

Khozem Vahaanwala
Saify Ind

Bengaluru, Karnataka, India

2002

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