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Ted Mooney, P.E. RET
Pine Beach, NJ
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for Metal Finishing since 1989
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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
- Akron Ohio
September 8, 2020
Junior Sales Representative - Resintech, Camden, NJ
Nadcap Chemical Processing Auditor - PRI, traveling
Process Engineer / Chemist - Denver Metal Finishing, Colorado
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