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Diamond drill bit and preparation method thereof

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

Active Publication Date: 2019-09-13
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. The preparation method of a diamond drill bit comprises the following steps that (1) raw materials of diamond particles and metal powder are divided into a first group of raw materials and a second group of raw materials, and are uniformly mixed respectively; (2) a material holding space in a diamond drill bit die is divided into a first material holding zone, a material holding charging zone and a third material holding zone from inside to outside; (3) the first group of raw materials is charged into the first material holding zone and the third material holding zone, the second group of raw materials is charged into the second material holding zone, and the raw materials are placed in a pressing die to be preliminarily compacted; and (4) the diamond drill bit die after charging is sent to a furnace for sintering, and the diamond drill bit is obtained. According to the preparation method, by controlling thepowder particle size and distribution of powder components, the diamond drill bit can have different local properties, the problem that the inner portion and the outer portion of a diamond drill bit are abraded unevenly in the drilling process is solved, and abnormal abrasion of the inner diameter and the outer diameter of the drill bit can be alleviated.

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 Applications(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)