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Drill bit impregnated with diamond film and manufacturing method thereof

A technology of impregnated diamond and diamond film, used in drill bits, earth-moving drilling, drilling equipment, etc., can solve the problem of uneven distribution and force, affecting the wear resistance, drilling efficiency and service life of diamond bits problems such as falling off, to achieve the effect of easy promotion, improve drilling efficiency, and reduce cutting adhesion

Inactive Publication Date: 2009-12-23
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the different sizes of diamond particles, the uneven distribution and stress, especially along the depth, and the influence of the adhesion performance of the matrix, the diamond particles are easy to fall off and roll during the drilling process, which seriously affects the diamond drill bit. Wear resistance, drilling efficiency and service life

Method used

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  • Drill bit impregnated with diamond film and manufacturing method thereof
  • Drill bit impregnated with diamond film and manufacturing method thereof
  • Drill bit impregnated with diamond film and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1 The overall structure of the drill bit with impregnated diamond film of the present invention will be described with reference to the drawings

[0037] in Figure 1~4 Among them, 1 is a steel body, 2 is a working layer, 3 is a matrix material, 4 is a diamond film, and 5 is a diamond grain. Among them, the impregnated diamond film 4 in the carcass material 3 constitutes the working layer 2.

[0038] Same as the existing drill bit, the drill bit impregnated with diamond film is also composed of a steel body 1 and a working layer 2 fixed together coaxially in sequence. However, the working layer 2 of the present invention is composed of a diamond film 4 inlaid and arranged in the carcass. Composition in material 3, see figure 1 . The diamond film 4 may be sheet-shaped, such as image 3 ; It can be columnar, such as figure 2 ; It can be arranged alternately in flakes and bars, such as Figure 4 .

[0039] The length of the diamond film 4 is less than or equal to the ...

Embodiment 2

[0041] Example 2 The structure of a drill with diamond grains 5 embedded between diamond films 4

[0042] Figure 5 The lip surface and the cross-sectional schematic diagram of the working layer of the drill bit with diamond grains embedded between the diamond films of the present invention are given. Among them, 5 are diamond grains. The diamond grains 5 can be mixed and impregnated in the matrix material 3; or the diamond grains 5 can be uniformly adhered to the columnar or sheet-shaped diamond film 4, and then embedded in the matrix material 3. Figure 5 Shown is the structure of the latter case.

Embodiment 3

[0043] Example 3 The structure of the drill with the diamond film 4 as a gauge

[0044] Figure 6 A schematic diagram of the lip surface and the cross-section of the drill bit working layer with the diamond film of the present invention functioning as a gauge is given. Wherein, the surface of the diamond film 4 is exposed on the inner or / and outer side of the working layer 2, and plays a role of gauge during use. The side surface of the bar-shaped diamond film 4 can also be exposed on the inner or / and outer side of the working layer 2, which also functions as a gauge during use.

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Abstract

The invention relates to a drill bit impregnated with a diamond film and a manufacturing method thereof, belonging to the field of mechanical processing. The drill bit is formed by a steel body (1) and a working layer (2), wherein the working layer (2) comprises the chemical vapor phase deposition diamond film (4) and hard matrix material (3). The diamond film (4) is distributed in the working layer (2) according to the required form. Molding ways of the drill bit comprise one-step forming and mosaic block type two-step forming. The one-step forming relates to the sintering type hot-press diamond drill bit, and the mosaic block type two-step forming relates to the drill bit formed by firstly sintering impregnated diamond segments and then welding the sintering impregnated diamond segments on the milled steel body. The drill bit can enhance abrasive resistance, reduces cutting adhesion, ensures the roughness and effective exposure of the bottom surface of the drill bit, and has effective gauge protection, thus improving the cutting efficiency and prolonging the service life of the tool. Compared with the common diamond drill bit, the drill bit impregnated with the diamond film has the characteristics of long service life, high drilling efficiency, long working distance, low energy consumption, strong anti-sticking rock dust capacity, etc.

Description

Technical field: [0001] The invention belongs to the field of mechanical processing, and relates to a geological drill bit used for exploring and mining energy. The drill bit is made of impregnated chemical vapor deposition (CVD) diamond film. Background technique: [0002] Traditional impregnated diamond drill bits mostly use alloy powder as the matrix material, and micron-sized diamond particles are uniformly or disorderly distributed in the matrix. Due to the different sizes of diamond particles, uneven distribution and stress, especially uneven distribution along the depth, and affected by the adhesion performance of the matrix, the diamond particles are easy to fall off and roll during the drilling process, which seriously affects the performance of the diamond bit Wear resistance, drilling efficiency and service life. In addition, the bottom lip surface of the impregnated diamond drill bit is designed in shape according to the requirements of different base rock geological ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/46C23C16/27C23C16/44B22F7/08
Inventor 李红东吕宪义王启亮刘军伟
Owner JILIN UNIV
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