Disk cutter having tip inserts coated with a hard material
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United States of America Patent
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Issued Date -
Oct 12, 2006
app pub date -
Mar 3, 2006
filing date -
Apr 12, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A disk cutter including an annular disk-shaped base adapted to be driven about an axis of rotation, a plurality of tip supports formed along the outer circumference of the base integrally therewith so that a gullet is defined between adjacent ones of the tip supports, a plurality of tip inserts respectively fixed to the tip supports, and a TiAlN coating formed on the surface of each tip insert. Each tip insert is formed of a sintered alloy composed of 98 to 90 w % of WC powder having a particle size of 0.1 to 0.8 .mu.m and 2 to 10 w % of Co powder. The TiAlN coating has a thickness of 1 to 5 .mu.m.
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