PCD CUTTERS WITH ENHANCED WORKING SURFACES ADJACENT A CAVITY
摘要
A PCD cutting element (2010) having a table of superhard material (2022) bonded to a substrate (2024). The superhard material has a first end working surface and an intermediate peripheral working surface (2028) adjacent the substrate. A cavity (2002, 2004, 2006) is formed in the substrate in an area immediately adjacent the peripheral working surface to expose a second end working surface. One particularly advantageous use of this new PCD cutting element is as cutting elements for earth boring drill bits.
申请公布号
WO2007148060(A8)
申请公布日期
2009.01.22
申请号
WO2007GB02263
申请日期
2007.06.18
申请人
REEDHYCALOG UK LIMITED;GRIFFIN, NIGEL, DENNIS;HUGHES, PETER, RAYMOND