Sintered body for chip forming machine
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United States of America
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Jun 17, 1997
Grant Date -
N/A
app pub date -
Oct 16, 1995
filing date -
May 12, 1986
priority date (Note) -
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Abstract
The present invention relates to a sintered body for chip forming machining containing at least one hard constituent comprising a carbide, nitride and/or carbonitride of a metal of group IVB, VB or VIB in the periodical system and a binder metal based upon Co, No and/or Fe, in which the body comprises a core containing eta-phase or an intermediate phase, substantially free of carbon and/or nitrogen surrounded by a hard constituent- and binder phase-containing surface zone, free of said eta-phase or intermediate phase.
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