Grinding tool
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United States of America Patent
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Mar 21, 1995
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N/A
app pub date -
Jan 14, 1993
filing date -
Jan 14, 1993
priority date (Note) -
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Abstract
A hafnium nitride coating is applied over the cubic boron nitride layer of conventional CBN tools by the process of arc physical-vapor-deposition at temperatures below the tempering temperature of the core metal. The hafnium nitride coating protects the cubic boron nitride or diamond abrasive and the core, resulting in a grinding tool with greater strength and longer life.
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