Ceramic cutting insert and method of making same
AssigneeSandvik Intellectual Property AB
InventorThomas Endtbacka
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Abstract
The present invention relates to a method of manufacturing a ceramic cutting insert, based on an oxide ceramic or a nitride ceramic or a mixed ceramic material, possibly containing whiskers, in a process comprising the powder metallurgical steps of providing a ready-to-press ceramic powder, pressing the ready-to-press powder into a compact of desired shape, sintering the compact to dense a ceramic blank followed by tumbling the ceramic blank, to remove sinter skin and provide an edge rounding.
Claims17
A method of manufacturing a ceramic cutting insert, based on an oxide ceramic, a nitride ceramic or a mixed ceramic material in a process comprising the powder metallurgical steps of
- providing a ready-to-press ceramic powder,
- pressing the ready-to-press powder into a compact of desired shape,
- sintering the compact to a dense ceramic blank and
- tumbling the ceramic blank to remove sinter skin and provide an edge rounding.
Dependencies are inferred from the claim text.