Method for handling hard metal
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United States of America Patent
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Aug 11, 2015
Grant Date -
May 1, 2014
app pub date -
Jun 14, 2012
filing date -
Jun 17, 2011
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Abstract
A method for sorting hard metal including the steps of subjecting one or more bodies of hard metal to a heat treatment at a temperature of 500° C. or higher in an atmosphere including at least one reactive gas component prone to form a reaction product with an element that may or may not be present in the one or more bodies. A sorting operation of the one or more bodies is performed based on a presence or absence of the reaction product in a surface portion of the heat treated one or more bodies.
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