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A kind of artificial diamond drill bit material and its drill bit, production process

A synthetic diamond and production process technology, applied in drill bits, metal processing equipment, earthwork drilling, etc., can solve the problems of difficult production process, high sintering temperature, easy to slip, etc., to ensure the alloying degree of the matrix and reduce the sintering. temperature, the effect of reducing erosion

Active Publication Date: 2020-09-29
马鞍山市华东超硬材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem that existing drill bits are easy to slip when drilling in hard, dense, and weakly abrasive formations, the present invention provides a synthetic diamond drill bit material. By replacing the skeleton material, the life of the diamond bit is improved while the formula component powder is improved. The uniformity of mixing also ensures that the material of the diamond drill bit is well alloyed during the sintering process
[0008] The invention also provides a production process of an artificial diamond drill bit, the purpose of which is to solve the problems of difficult production process and high sintering temperature

Method used

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  • A kind of artificial diamond drill bit material and its drill bit, production process
  • A kind of artificial diamond drill bit material and its drill bit, production process
  • A kind of artificial diamond drill bit material and its drill bit, production process

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Effect test

Embodiment 1

[0051] A kind of artificial diamond bit material of this embodiment comprises matrix powder and cutting diamond coarse powder. Carcass powder includes pre-alloyed powder and diamond powder, and its material composition and mass parts of each component are: 73.5 parts of Fe, 16.5 parts of Cu, 1.5 parts of C, 0.4 parts of Si, 2 parts of Sn, 200 mesh diamond powder 4 Among them, C is the content of C in SiC. It is worth noting that SiC and 200-mesh diamond can replace the traditional WC as the framework material, and the content of C in SiC is more than that of Si, which can be combined with other metals The element reacts, such as forming iron carbide, forming pores on the matrix layer, which plays a role in creating pores. Adding a small amount of pores can improve the cutting edge of the diamond drill bit, and during hot pressing, some pores will be filled, so don’t worry about too much impact The hardness of the drill bit; while the 200-mesh diamond is fine enough, the mixing...

Embodiment 2

[0062] This embodiment is basically the same as the embodiment 1, the difference lies in: the addition amount of each component of the drill bit material is different, and the process parameters are different.

[0063] A kind of artificial diamond bit material of this embodiment comprises matrix powder and cutting diamond coarse powder. Carcass powder includes pre-alloyed powder and diamond powder, its material composition and the mass parts of each component are: 71 parts of Fe, 15 parts of Cu, 1 part of C, 0.3 parts of Si, 1.5 parts of Sn, 170 mesh diamond powder 3 Among them, the 170-mesh diamond is fine enough, the mixing uniformity of the powder is good, the hardness is high, and the melting point is high, which can improve the service life of the drill bit. The concentration of cutting diamond coarse powder is 70%, which is 35 / 40 mesh nickel-plated diamond, which can effectively guarantee the ability of the drill bit to cut and drill diamond materials.

[0064] Here, "t...

Embodiment 3

[0074] This embodiment is basically the same as the embodiment 1, the difference lies in: the addition amount of each component of the drill bit material is different, and the process parameters are different.

[0075] A kind of artificial diamond bit material of this embodiment comprises matrix powder and cutting diamond coarse powder. Carcass powder includes pre-alloyed powder and diamond powder, and its material composition and mass parts of each component are: Fe 76 parts, Cu 18 parts, C 2 parts, Si 0.5 parts, Sn 2.5 parts, 200 mesh diamond powder 5 Part; Wherein, the concentration of cutting diamond coarse powder is 80%, is the nickel-plated diamond of two grain sizes of 40 / 45 order and 50 / 60 order, and wherein, mixing mass ratio is 40 / 45 order: 50 / 60 order=2: 1. It can effectively guarantee the ability of the drill bit to cut and drill diamonds.

[0076] Here "the concentration of coarse diamond powder is 80%" means that the volume of coarse diamond powder in the matrix...

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Abstract

The invention discloses an artificial diamond drill material, a drill and a production process thereof, and belongs to the technical field of diamond drills. The artificial diamond bit material of the present invention comprises matrix powder and cutting diamond coarse powder, and said matrix powder comprises pre-alloyed powder and diamond micropowder, and its material composition and the mass fraction of each component are: Fe 71.00~76.00 parts , 15.00-18.00 parts of Cu, 1.00-2.00 parts of C, 0.30-0.50 parts of Si, 1.50-2.50 parts of Sn, 3.00-5.00 parts of diamond powder; among them, the particle size of cutting diamond coarse powder is 35-60 mesh, and the concentration is 70- 80%; the particle size of the diamond powder is at least 170 mesh. According to the above-mentioned materials, the production process steps of the diamond drill bit include: powder making, material mixing, mold loading, sintering, machining and grinding, and water planing. In the sintering process, the sintering temperature is reduced and heated according to a specific sintering curve to obtain An artificial diamond drill bit can improve the slipping phenomenon of the drill bit and increase the abrasiveness of the drill bit.

Description

technical field [0001] The invention belongs to the technical field of diamond drill bits, and more specifically relates to a synthetic diamond drill bit material, a drill bit, and a production process thereof. Background technique [0002] With the development of deep prospecting, there are more and more "slipping" rock formations, but "slipping" formations do not exist objectively. Slipping is a common phenomenon encountered when drill bits and rocks do not adapt. The main characteristics of "slip" formations are hard rock, dense structure and weak abrasiveness. The main reason why the conventional drill bit slips when drilling in hard, dense, and weakly abrasive formations is that the consumption of the diamond and the matrix does not match. The most prominent performance is that the diamond at the bottom lip of the drill bit cannot be edged by itself or the height of the edge is not enough. WC-Co is used as the skeleton Traditional formulations of materials have been un...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C26/00C22C38/00C22C38/02C22C38/16E21B10/46B22F1/00B22F3/02B22F3/10B22F3/24B22F5/00
CPCC22C26/00C22C38/16C22C38/02C22C38/008E21B10/46B22F3/02B22F3/10B22F3/24B22F5/00B22F2003/247B22F2005/001B22F1/102
Inventor 吴胜叶舟何坤董小敏张龙祥
Owner 马鞍山市华东超硬材料有限责任公司
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