Patent ID: 11873684
Assignee: SF DIAMOND CO., LTD.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 8:
9. A polycrystalline diamond compact, comprising:
a polycrystalline diamond layer, the polycrystalline diamond layer being in the form of a cylinder comprising an upper surface, a bottom surface, and a side wall connecting the upper surface and the bottom surface; and
a cemented carbide substrate, the cemented carbide substrate being bonded to the bottom surface of the polycrystalline diamond layer;, wherein:
the upper surface comprises a center part and an edge part;
the edge part comprises a plurality of cutting edges and a plurality of cutting removal grooves, and the plurality of cutting edges and the plurality of cutting removal grooves are radially distributed on the upper surface and surround the center part;
the plurality of cutting edges and the plurality of cutting removal grooves are alternately disposed on the upper surface;
a first end of each of the plurality of cutting edges and a first end of the plurality of cutting removal grooves are in direct connection to a peripheral edge of the center part, and a second end of the each of the plurality of cutting edges and a second end of the plurality of cutting removal grooves communicate with the side wall;
the center part is concave toward the bottom surface of the polycrystalline diamond layer;
each of the plurality of cutting edges comprises a first sloped surface and a second sloped surface forming a ridge having a ridge line extending along a radial direction of the upper surface; and
an included angle between the first sloped surface and the second sloped surface is greater than 90°.