Diamond bit containing hard brittle abrasive particles and manufacture process thereof

Abstract

The invention discloses a diamond bit containing hard brittle abrasive particles and a manufacture process thereof. The bit comprises a carcass, wherein multiple groups of abrasive particles are arranged in the carcass, each group of abrasive particles include diamond abrasive particles and hard brittle abrasive particles, and the diamond abrasive particles and the hard brittle abrasive particlesoverlap on each other. The manufacture process comprises the following steps: (1) shaping and screening the hard brittle abrasive particles; (2) punching in a template; (3) premoulding carcass sheets;(4) paving abrasive particles with coarse particle diameter on the carcass sheets; (5) paving abrasive particles with fine particles on the carcass sheets; and (6) combining and performing cold pressmolding on multiple layers of carcass sheets. The diamond bit disclosed by the invention solves the problem of instability of bit performance caused by relative position difference factors of the hard brittle abrasive particles and the diamond in the carcass, and increases the batch performance stability and drilling efficiency of the bit.

Description

technical field [0001] The invention relates to a diamond drill bit, in particular to a diamond drill bit containing hard and brittle abrasive grains and a manufacturing process thereof. Background technique [0002] Obtaining deep underground rock cores by means of drilling is a direct method to evaluate geological mineral reserves, but to effectively obtain rock cores requires that the drill bit must have excellent performance. In recent years, with the development of high-efficiency exploration and evaluation of energy resources in the deep part of the earth, it is more and more common to encounter hard, dense and complex formations. In addition, in recent years, with the enhancement of environmental protection awareness and the in-depth advancement of ecological construction, exploration operations have also developed in the direction of green drilling. Reduce the disturbance to the environment during the construction process. Therefore, higher requirements are put f...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above-mentioned technical problems, the present invention provides a method that can solve the problem of unstable performance of the drill bit caused by the relative position difference between the hard and brittle abrasive grains and the diamond in the matrix, and improves the batch performance stability of the drill bit and the performance of the drill bit. High-efficiency diamond drill bit containing hard and brittle abrasive grains and its manufacturing process

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