No passwords, no registration, no paywalls, no popups, no AI

As an Amazon Associate & eBay Partner we earn from affil links

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

Search our quarter-million Q&As

Home of the finishing HOTLINE since 1989

-----

Friction of chrome plate is much higher than lit reports

We have done dry friction test in Pin-on-disc apparatus to find out the friction coefficient of Hard chrome plated disc (1000 HV) with hardened steel pin (750) HV). Surface finish of disc and pin are kept below 0.1 Ra. Consistently we are getting friction coefficients around 0.6 instead of 0.2 as per literatures. What could be the reasons for this high friction coefficient in lab testing. Same values attained for different loads and sliding velocities.

K.Chandrasekaran
Metallurgist - Coimbatore, Tamilnadu, India
2004

Sorry that no one experienced in this has responded, K. It seems to me (having no experience with that apparatus) that it almost surely must be out of calibration. Have you tested other materials? Actually 0.2 is at the high end of the published literature; I've seen 0.16 in print.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
Need quick confidential answers? $25
Need project assistance? $100/hr.

Sorry! Finishing.com is temporarily Read-Only.
Ted Mooney is retiring but I have several offers to take it over.
We're working hard to make sure we find it the best new home.

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: