Long-life ridge type polycrystalline diamond compact

A technology of polycrystalline diamond and composite sheet, which is applied to drilling equipment, earthwork drilling, drill bits, etc. It can solve the problem of low service life of ridge-shaped diamond composite sheet, improve rock breaking efficiency, increase ROP, and increase The effect of impact toughness

Pending Publication Date: 2020-09-29
福建省万龙新材料科技有限公司
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Problems solved by technology

[0005] The present invention provides a high-life ridge-type polycrystalline diamond composite sheet to solve the shortcomings of the existing ridge-type diamond composite sheet such as low service life and the like

Method used

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  • Long-life ridge type polycrystalline diamond compact
  • Long-life ridge type polycrystalline diamond compact
  • Long-life ridge type polycrystalline diamond compact

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Embodiment 2

[0039] refer to Figure 5 and Image 6 The polycrystalline diamond compact of this embodiment also includes a cemented carbide substrate 10 and a polycrystalline diamond layer 20 fixed on the cemented carbide substrate. The polycrystalline diamond compact has a diameter of 15.88mm and a total height of 13.20mm. The end face of the polycrystalline diamond layer 20 of the present embodiment is made up of three tangent planes 21 and a triangular plane 22, wherein, three tangent planes 21 are bevel structure, and the angle of three bevels and end face is 10 °, and triangular plane 22 is a side An equilateral triangle with a length of 8mm.

[0040] refer to Figure 5, every two adjacent cut surfaces 21 are transitionally connected by a raised ridge 211, and the top of the raised ridge 211 is a rounded corner of 2.00 mm; each cut surface 21 is also connected with a triangular plane 22 by a raised ridge 211, the raised The top of the ridge 211 is also rounded at 2.00 mm. Of cours...

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Abstract

The invention discloses a long-life ridge type polycrystalline diamond compact. The long-life ridge type polycrystalline diamond compact comprises a hard alloy matrix and a polycrystalline diamond layer fixed on the hard alloy matrix, wherein the end face of the polycrystalline diamond layer comprises two or more sections; every two adjacent sections are intersected to form a ridge; a plurality ofbulges corresponding to the radial edges of the ridges are arranged at the outer edge of the bottom of the polycrystalline diamond layer and extend along the direction of the hard alloy matrix; and the hard alloy matrix is correspondingly provided with a plurality of grooves matched with the bulges. The plurality of bulges corresponding to the radial edges of the ridges are arranged at the outeredge of the bottom of the polycrystalline diamond layer, and the hard alloy matrix is correspondingly provided with the plurality of grooves. By adopting a mode of matching the bulges with the grooves, the service life of a working part of the polycrystalline diamond layer can be effectively prolonged under the condition of considering the cost, and the impact toughness of the polycrystalline diamond layer can be improved.

Description

technical field [0001] The invention relates to the technical field of superhard materials, in particular to a high-life ridge-type polycrystalline diamond composite sheet. Background technique [0002] Polycrystalline diamond compact (PDC, hereinafter referred to as PDC) is sintered by polycrystalline diamond layer (PCD-polycristalline diamond, hereinafter referred to as PCD) and hard alloy (tungstencarbide-cobalt) substrate under high temperature and high pressure. It has both the hardness and wear resistance of diamond and the strength and impact toughness of cemented carbide. It is an excellent material for cutting tools and wear-resistant tools. [0003] At present, PDC cutting elements for drill bits in the drilling industry generally use flat PCD layers and special-shaped PCD layers such as spherical heads and conical heads. Sex and other performance put forward higher requirements. The Chinese invention patent with the application publication number CN 109681125A d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/46
CPCE21B10/46
Inventor 黄莹祥何泽伟杨志宏林文彬何克华庄智智吴跃明柳时栋
Owner 福建省万龙新材料科技有限公司
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