Powder metallurgy process for making lead free brass alloys

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United States of America Patent

PATENT NO 11440094
APP PUB NO 20190283132A1
SERIAL NO

16351114

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Abstract

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Graphite-containing brass alloy billets having less than 0.25 wt. % lead and a method of manufacturing relating thereto are provided. The method includes forming a brass powder and mixing the brass powder with graphite and one or more binders. The brass powder contains copper and zinc and may be formed using water atomization. The brass-powder mixture is compacted to form an initial billet. The initial billet may be subjected to one or more heating treatments. A first heating treatment may be used to remove the one or more binders. An optional second heating treatment may be used to deoxidize the binder-free billet. A third heating treatment may sinter the compact to form the workable graphite-containing brass alloy billet.

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Patent Owner(s)

Patent OwnerAddress
MUELLER INDUSTRIES INC8285 TOURNAMENT DRIVE SUITE 150 MEMPHIS TN 38126

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kidder, Christopher Todd Germantown, US 2 4
Munce, Barry George Lexington, US 2 4
Sigloch, Steffen Memphis, US 3 6

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