Diamond tools for rock drilling, metal cutting and wear part applications
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United States of America Patent
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Nov 23, 1993
Grant Date -
N/A
app pub date -
Oct 11, 1991
filing date -
Oct 11, 1990
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention relates to buttons, inserts and bodies for rock drilling, rock cutting, metal cutting and wear part applications. The buttons, inserts and bodies comprise cemented carbide provided with bodies and/or layers of CVD- or PVD-fabricated diamond and then HP/HT treated in the diamond stable area. The bodies of cemented carbide may have a uniform structure or a multi-structure containing eta-phase surrounded by a surface zone of cemented carbide free of eta-phase.
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