Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

finishing.com -- The Home Page of the Finishing Industry

The authoritative public forum
for Metal Finishing since 1989
-----

Hard chrome plating problems: porosity and breaking / fracturing

Q. I am a metallurgist in a engineering company.

We are doing hard chrome plating of our components, and we are facing problems like porous hardchrome structure, and low hardness.

After hard chrome chrome plating, we are testing the component for breaking load and we found lower against the specification. but without hard chrome plating we can get the specified breaking load.

Pl. reply.

DEVARAJAN LAKSHMANAN
hobbyist - Coimbatore,Tamil Nadu, India
July 27, 2009

Current Solutions to Hydrogen Problems in Steels
(includes 7 papers / 34 pages on electroplating)
hydrogen_embrittlement_probs1982

on eBay or

Amazon

(affil links)

"Hard Chromium plating"
by Robert K. Guffie
Hard Chromium plating by Robert K. Guffie

on AbeBooks
(rarely)

or eBay
(rarely)

or Amazon

(affil links)

A. Hi, Devarajan. Do you properly bake the parts for hydrogen de-embrittlement immediately after plating? Please tell us your baking situation and the hardness (Rc rating) of the substrate because hardened steel must be baked.

Regarding the porosity problem in hard chrome plating, we have about a dozen detailed discussions on line here. Please use the search engine to check them, and if the previous answers do not get you to a solution, please post details of your components and your processing. Thanks and good luck.

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
July 27, 2009

adv.
this text gets replaced with bannerText

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: