Multiple ridge diamond compact for drill bit and drill bit

Abstract

The disclosure relates to a multiple ridge diamond compact for a drill bit, comprising a hard alloy substrate (cemented carbide substrate) () and a diamond composite layer (), wherein an end surface of the diamond composite layer is provided with at least two ridges angled relative to each other, and converging ends of two adjacent ridges extend to an edge of the diamond composite layer () so as to form a concave cutting edge portion on the edge. The plurality of ridges angled relative to each other are set as a cutting surface group to simultaneously cut a formation, the formation is first pre-crushed by means of the ridges angled relative to each other, the ridges first enter the formation from sharp surfaces (the converging ends of the ridges), a crushing pit in the direction of the ridges is further enlarged, and then the formation is further extruded and crushed by inclined surfaces on two sides of the group of ridges, such that the cutting surfaces thereof have a plowing effect, thus improving the crushing and drilling performance of the diamond compact, reducing the drilling cutting resistance, and further increasing the mechanical drilling speed (rate of penetration) of the diamond drill bit.