A tip for a degradation tool, the tip comprising a PCD structure (20) joined to a cemented carbide substrate (30); the PCD structure comprising a plurality of strata (24, 25) arranged so that adjacent strata have alternating compressive and tensile stress states, adjacent strata comprising different PCD grades and being directly bonded to each other by inter-growth of diamond grains; each stratum having a mean thickness of at most 500 microns; the PCD structure defining a working end including a rounded conical apex (22) having a radius of curvature of 1.3 mm to 4 mm.
申请公布号
WO2012152848(A3)
申请公布日期
2013.06.06
申请号
WO2012EP58585
申请日期
2012.05.09
申请人
ELEMENT SIX ABRASIVES S.A.;JONKER, CORNELIS, ROELOF;BOWES, DAVID, CHRISTIAN;SHABALALA, THEMBINKOSI;CAN, NEDRET