Presented in Partnership with:
 
 

Ask the Expert Question-and-Answer Archive
(Hard Chrome Plating)

by Randy Taylor, Advanced Tooling Corporation
January, 2008

Electropolishing of Chromed Stainless Steel

Q. Is it possible to electropolish stainless steel after an hard chromium plating? If yes, what is the solution i need to use?

A. I'm not an expert on the process, but I think my answer would be "NO." Electro-polishing is a wet process which uses a specially formulated chemical acid bath and direct current to scrub or dissolve away small amounts of metal from the part surface resulting in a smooth shiny finish. If chromium was present on the surface, I believe it would mask the affects of the electro-polishing on the substrate. In addition, it would inhibit your ability to perform pre-treatment steps to the base metal prior to electro-polishing such as de-scaling and electro cleaning?

If parts don't meet after chrome finish requirements, remove the chromium, electro-polish the base material to the desired micro and re-chrome as desired. Does this help?

RT

 

| Home | Subscribe | Regulations | Compliance Assistance | News | Resources | Resource Locators | Directories | Online Training | About | Search | NASF.org |


The information contained in this site is provided for your review and convenience. It is not intended to provide legal advice with respect to any federal, state, or local regulation.
You should consult with legal counsel and appropriate authorities before interpreting any regulations or undertaking any specific course of action.

Please note that many of the regulatory discussions on STERC refer to federal regulations. In many cases, states or local governments have promulgated relevant rules and standards
that are different and/or more stringent than the federal regulations. Therefore, to assure full compliance, you should investigate and comply with all applicable federal, state and local regulations.