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A kind of diamond drill bit and preparation method thereof

A technology of diamond drill bits and diamond particles is applied in the field of parts preparation, which can solve the problems of time-consuming, laborious and cost-increasing, and achieve the effect of solving uneven wear inside and outside and alleviating abnormal wear.

Active Publication Date: 2020-09-29
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the realization of different performances of the same part is mainly through partial electroplating, local heat treatment and other technical methods. However, these post-treatment processes are time-consuming and laborious, which greatly increase the cost of part processing. Processing parts with powder metallurgy or additive manufacturing technology can provide new ideas and new solutions for the forming of controllable performance parts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of preparation method of diamond drill bit of the present invention, comprises the steps:

[0019] 1) Divide the raw diamond particles and metal powder into the first group of raw materials and the second group of raw materials with different diamond particle diameters and metal powder mass ratios, and put them into a three-dimensional mixer for mixing and mixing evenly; the first group of raw materials And the diamond particle concentration in the second group of raw materials is made by 400% concentration system, and the diamond concentration is 100%; The diamond particles of the first group of raw materials are 40 mesh diamond particles, and the mass parts of metal powder are 25 parts of WC, 10 parts of Ni, Co 20 parts, Cu-Sn 10 parts; the diamond particles of the second group of raw materials are 20 mesh diamond particles, and the mass components of the metal powder are 10 parts of WC and 90 parts of Co.

[0020] 2) Two rings with a certain height and differe...

Embodiment 2

[0024] 1) Divide the raw diamond particles and metal powder into the first group of raw materials and the second group of raw materials with different diamond particle diameters and metal powder mass ratios, and put them into a three-dimensional mixer for mixing and mixing evenly; the first group of raw materials And the diamond particle concentration in the second group of raw materials is made by 400% concentration, and the diamond concentration is 100%; the diamond particle of the first group of raw materials is 45 mesh diamond particles, and the mass parts of metal powder are WC30 parts, Ni10 parts, Co20 Parts, 40 parts of Cu-Sn; The diamond particles of the second group of raw materials are 25 mesh diamond particles, and the mass components of metal powder are 25 parts of WC and 100 parts of Co.

[0025] 2) Two rings with a certain height and different diameters divide the loading space in the diamond bit mold from the inside to the outside into three loading areas, which ...

Embodiment 3

[0029] 1) Divide the raw diamond particles and metal powder into the first group of raw materials and the second group of raw materials with different diamond particle diameters and metal powder mass ratios, and put them into a three-dimensional mixer for mixing and mixing evenly; the first group of raw materials And the diamond particle concentration in the second group of raw materials is by 400% concentration system, and the diamond concentration is 100%; The diamond particle of the first group of raw materials is 40 mesh diamond particles, and the mass fraction of metal powder is 28 parts of WC, 10 parts of Ni, Co 20 parts, Cu-Sn30 parts; the diamond particles of the second group of raw materials are 20 mesh diamond particles, and the mass components of the metal powder are 20 parts of WC and 95 parts of Co.

[0030] 2) Two rings with a certain height and different diameters divide the loading space in the diamond bit mold from the inside to the outside into three loading a...

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PUM

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Abstract

The invention discloses a diamond drill bit and a preparation method thereof. A kind of preparation method of diamond bit of the present invention, comprises the following steps: 1) divide raw material diamond particle and metal powder into first group raw material and second group raw material, and mix respectively; 2) charge in the diamond bit mold The space is divided into the first charging area, the second charging area and the third charging area from the inside to the outside; 3) the raw materials of the first group are loaded into the first charging area and the third charging area, and the second The raw materials of the group are loaded into the second charging area, and put into a die for preliminary compaction; 4) Send the charged diamond bit mold to a furnace for sintering to obtain a diamond bit. The preparation method of the present invention can make the diamond drill bit obtain different local performances by controlling the powder particle size and the distribution of the powder components, solve the problem of uneven internal and external wear of the diamond drill bit during the drilling process, and can alleviate the unevenness of the inner and outer diameters of the drill bit. normal abrasion.

Description

technical field [0001] The invention belongs to the technical field of parts preparation, and in particular relates to a diamond drill bit and a preparation method thereof. Background technique [0002] With the continuous advancement of science and technology, people's constant pursuit of quality of life, the continuous emergence of new processes and new materials in industrial production, the requirements for material performance in complex and special working environments are increasing, and materials with single performance and isotropy have become It is difficult to meet the demand for its performance under harsh conditions. In some industrial manufacturing processes, different parts of the same part undertake different tasks, and different parts of the part need to have different performance and effects. The requirements for controllable performance are put forward. For example, the gear requires its core to have high strength, and its outer teeth must have high hardne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C26/00C22C19/07C22C30/02C22C30/04C22C32/00C22C1/05B22F3/02B22F3/10C22C1/10B22F1/00B22F5/00E21B10/46
CPCC22C26/00C22C19/07C22C30/02C22C30/04C22C32/0052C22C1/05B22F3/02B22F3/10B22F5/00E21B10/46B22F2005/001B22F1/052
Inventor 周燕甘杰段隆臣谭松成杨展方小红高辉刘凡
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)