Composite part including a cutting element

摘要

A composite part comprises (a) a cutting element which comprises super-hard cutting table and a substrate and (b) a metal or alloy layer. Respective first surfaces of the superhard cutting table and the substrate are joined to each other, and the metal or alloy layer is located adjacent to second surfaces of the cutting table and the substrate so as to surround the joined first surfaces of the cutting table and the substrate. The metal or alloy layer and the second surfaces of one or both of the cutting table and substrate are co-operatively shaped substantially to prevent relative movement therebetween. The metal or alloy layer may be used to secure the cutting element within a tool body, and advantageously provides a convenient means to effect that securement, while simultaneously protecting the join between the superhard cutting table and the substrate during the process of securement of the cutting element to the tool body.

主权项

1. A composite part comprising:
a super-hard cutting table; a substrate; and a metal or alloy layer;the superhard cutting table having a first surface that is joined to a first surface of the substrate and the metal or alloy layer being located adjacent to second surfaces of the cutting table and the substrate so as to surround the join between the first surfaces of the cutting table and the substrate; wherein: the metal or alloy layer and one or both of the second surfaces of the cutting table and substrate to which it is adjacent are provided with depressions therein and/or projections therefrom, which depressions and/or projections co-operate with each other substantially to prevent relative movement therebetween, the surface of the metal or alloy layer closest to the substrate and the cutting table and also the opposing surface of the metal or alloy layer having a profile having depressions and/or projections following the profile of the depressions and/or projections in the cutting table and/or substrate.