Coated inserts for dry milling
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United States of America Patent
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Oct 7, 2008
Grant Date -
Jun 1, 2006
app pub date -
Oct 31, 2005
filing date -
Nov 8, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Coated milling inserts particularly useful for milling of grey cast iron with or without cast skin under dry conditions at generally high cutting speeds and milling of nodular cast iron and compacted graphite iron with or without cast skin under dry conditions at rather high cutting speeds are disclosed.The inserts are characterised by a WC--Co cemented carbide with a low content of cubic carbides and a highly W-alloyed binder phase and a coating including an inner layer of TiC.sub.xN.sub.y with columnar grains followed by a wet blasted layer of .alpha.-Al.sub.2O.sub.3.
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