No cost, no registration, no passwords -- just aloha, fun & authoritative answers
(as an eBay Partner & Amazon Affiliate we earn from qualifying purchases)

Where the
world gathers for metal finishing
Q&As since 1989

-----

Problem of Brass finish burning off during sintering furnacing

Q. Good Afternoon,
My company is trying a new process, looking to get a shiny finish. We are using brass over the top of nickel on a ring, then furnacing the ring at 1550 °F in a reducing atmosphere. We start up 100% hydrogen, then switch to nitrogen for the cooling process. We are having all the brass burn off the part, and are left with a shiny appearance that looks almost like chrome. I am attempting to figure out exactly what is happening, and why my nice brass finish is disappearing.

Thank you,

Matt

Matthew Casey
- Akron Ohio
September 8, 2020

Production Manager for Plating Co. - AST, Arvada, CO
Junior Sales Representative - Resintech, Camden, NJ
Nadcap Chemical Processing Auditor - PRI, traveling

(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: