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

-----

Heat treating of Nickel electroforms

adv.

I am plating from a Ni sulfamate solution (~84g/L Ni), pH 4 buffered with boric acid, adjusted with sulfamic acid ⇦ on eBay or Amazon [affil link] , on to a cylindrical drum. Current density ranges from 10-60ASF, thickness ~200 microns.

We peel the Ni coating off, clamp it down flat and heat treat in air at ~300C for 6hrs then furnace cool to room temp. The only reason for the heat treatment is to flatten the part.

What effect does heat treating have on the Ni part, specifically related to hardness/grain size? Is there a curve similar to the TTT curves for steel that would illustrate what is happening?

Thanks,

Brett Dening
R&D - Niskayuna, New York
2005

Your type of work seems highly technical and your questions very hard to answer briefly, so it would better for you to get a copy of the book Properties of Electrodeposited Metals and Alloys [affil link to Amazon or on AbeBooks affil links] , W. Safranek. Available through this site.

Guillermo Marrufo
Monterrey, NL, Mexico
2005

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: