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Impregnated column matrix powder for diamond-impregnated bit as well as method for manufacturing matrix

A technology of impregnated diamond and carcass powder is applied in the field of alloy materials and their preparation, which can solve the problems of insufficient holding force, easy falling off, and low forming quality, and achieve high compaction density, good wear resistance, and reliable packaging. Effect

Active Publication Date: 2013-11-27
SHENZHEN XINGWO IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the disadvantages of low forming quality and irregular distribution of diamond particles in the matrix material in the sintered impregnated pillars in the prior art, the hardness and other properties of the impregnated pillars are not uniform and the wrapping is not reliable, and the holding force is not enough. , easy to fall off and affect the performance of the impregnated diamond bit

Method used

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  • Impregnated column matrix powder for diamond-impregnated bit as well as method for manufacturing matrix
  • Impregnated column matrix powder for diamond-impregnated bit as well as method for manufacturing matrix

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A kind of impregnated diamond drill bit is used impregnated column carcass powder, and it is mixed by following components:

[0039] 1) Coating powder composed of the following components by mass percentage: cast tungsten carbide: 25%, its particle size: 50um; single crystal tungsten carbide: 30%, its particle size: 800 mesh; tungsten powder: 5% , its particle size is: 50um; copper powder: 20%, its particle size is: 400 mesh; nickel powder: 5%, its particle size is: 800 mesh; manganese powder: 5%, its particle size is: 800 mesh; zinc powder: 5% %, its particle size is: 400 orders; Cobalt powder: 5%, its particle size is: 400 orders;

[0040] 2) Diamond: the volume ratio accounts for 25% of the above-mentioned wrapped powder, and its particle size is: 20-25 mesh. In the above-mentioned carcass powder, the diamond concentration is 100%.

[0041] A kind of manufacture method of impregnated diamond drill bit with impregnated column matrix, it comprises the following proce...

Embodiment 2

[0049] The characteristics of this embodiment are: the cast tungsten carbide: 20%; single crystal tungsten carbide: 25%; tungsten powder: 10%; copper powder: 20%; nickel powder: 10%; manganese powder: 2%; zinc powder : 5%; cobalt powder: 8%; the diamond volume ratio accounts for 30% of the above-mentioned wrapped powder. In the above-mentioned carcass powder, the diamond concentration was 120%. The particle size of cast tungsten carbide: 20um; the particle size of single crystal tungsten carbide: 200 mesh; the particle size of tungsten powder: 30um; the particle size of copper powder: 200 mesh; the particle size of nickel powder: 400 mesh; the particle size of manganese powder It is: 500 mesh; the particle size of zinc powder is: 300 mesh; the particle size of cobalt powder is: 100 mesh; the particle size of diamond is: 20 mesh. Others are the same as in Example 1.

Embodiment 3

[0051] The characteristics of this embodiment are: the cast tungsten carbide: 20%; single crystal tungsten carbide: 25%; tungsten powder: 10%; copper powder: 20%; nickel powder: 5%; manganese powder: 4%; zinc powder : 6%; cobalt powder: 10%; diamond volume ratio accounts for 17.5% of the above-mentioned wrapped powder. In the above-mentioned carcass powder, the diamond concentration was 70%. Others are identical with specific embodiment 1 or 2.

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Abstract

The invention discloses impregnated column matrix powder for a diamond-impregnated bit. The impregnated column matrix powder comprises components in percentage by mass as follows: 1), packaging powder: 20%-30% of cast tungsten carbide, 25%-35% of monocrystal tungsten carbide; 5%-15% of tungsten powder, 15%-25% of copper powder, 5%-15% of nickel powder, 1%-10% of manganese powder, 1%-10% of zinc powder and 1%-10% of cobalt powder; and 2), diamonds whose volume accounts for 17.5%-30% of the packaging powder. The invention further discloses a method for manufacturing an impregnated column matrix for the diamond-impregnated bit. The method comprises the steps as follows: 1), mixing; 2), pelleting; 3), charging; 4), sintering, 5), performing heat preservation; and 6), cooling and obtaining the impregnated column matrix. The impregnated column matrix powder has good abrasion resistance, hardness and holding force. According to the manufacturing method, the diamonds are uniformly distributed in matrix powder, and packaging is reliable.

Description

technical field [0001] The invention relates to an alloy material and a preparation method thereof, in particular to an impregnated column carcass powder for an impregnated diamond drill bit and a method for manufacturing the carcass by using the same. Background technique [0002] The impregnated diamond bit is to distribute finer diamond particles into the bit matrix. When drilling, with the wear of the matrix, the diamond will continue to be exposed to the rock. It has high compression resistance, strong anti-wear ability, and Good impact ability and so on. However, due to the shortcomings of low forming quality and irregular distribution of diamond particles in the matrix material in the sintered impregnated pillars in the prior art, the hardness and other properties of the impregnated pillars are not uniform and the wrapping is not reliable, and the holding force is not enough. , easy to fall off and affect the performance of the impregnated diamond bit. Contents of ...

Claims

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Application Information

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IPC IPC(8): B22F1/00B22F7/06C22C29/08C22C30/06C22C32/00
Inventor 陈俊勇徐泓杨英祥温贵凡胡家建
Owner SHENZHEN XINGWO IND
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