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Preparation method of wear-resistant substrate and diameter-gauge wear-resistant block

A wear-resistant block and matrix technology, applied in the field of diameter-gauge wear-resistant blocks, can solve the problems of high cost and poor wear resistance, and achieve the effects of good hardness, improved wear resistance and cost reduction.

Active Publication Date: 2020-05-12
CHENGDU HUILINGFENG DIAMOND BIT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a wear-resistant substrate, a preparation method and a gauge wear-resistant block, so as to solve the problems of poor wear resistance and high cost of the gauge part of the steel drill bit in the prior art, and realize the improvement of the steel drill bit. Gauge wear resistance, while significantly reducing costs

Method used

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  • Preparation method of wear-resistant substrate and diameter-gauge wear-resistant block
  • Preparation method of wear-resistant substrate and diameter-gauge wear-resistant block
  • Preparation method of wear-resistant substrate and diameter-gauge wear-resistant block

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A wear-resistant matrix, comprising the following components in weight percent: 85% of spherical tungsten carbide powder with a particle size of 200-300 mesh, 10% of tungsten carbide single crystal powder with a particle size of 100-200 mesh, and 5% of nickel powder with a particle size of 100-200 mesh. The particle size of spherical tungsten carbide powder is 200-300 mesh, which refers to the spherical tungsten carbide powder that can pass through the 200-mesh sieve but not the 300-mesh sieve. The particle size of tungsten carbide single crystal powder is 100-200 mesh, which means that it can pass through the 100-mesh sieve but cannot pass through the 200-mesh sieve. The nickel powder particle size of 100-200 mesh refers to the nickel powder that can pass through the 100-mesh sieve but cannot pass through the 200-mesh sieve.

Embodiment 2

[0033] A method for preparing a wear-resistant substrate, comprising the following steps:

[0034] (a) Mix and stir spherical tungsten carbide powder with a particle size of 200 to 300 mesh, tungsten carbide single crystal powder with a particle size of 100 to 200 mesh, and nickel powder with a particle size of 100 to 200 mesh according to the weight percentage of 0.85:0.1:0.05, and the stirring time is not less than After three hours, tire powder is obtained; (b) adding impregnating materials to the tire powder, mixing evenly and filling the mold; (c) sintering at high temperature to obtain a wear-resistant matrix. The impregnating material is nickel-based alloy. The nickel-based alloy includes the following components in weight percentage: 94% Ni, 1% Co, 3% Si, 1% B, less than or equal to 0.1% Fe. The sintering temperature in step (c) is 1190°C-1200°C.

[0035]The wear-resistant matrix prepared in this embodiment has the following mechanical properties: Rockwell hardness 5...

Embodiment 3

[0040] like figure 1 The shown diameter gauge wear-resistant block includes a wear-resistant substrate 1, and the surface of the wear-resistant substrate 1 is embedded with a central thermally stable polychip 2 and an edge thermally stable polychip 3, and the central thermally stable polychip 2 is The area occupied by the surface of the grinding substrate 1 is greater than the area occupied by any edge thermally stable polychip 3 on the surface of the wear-resistant substrate 1. The number of the edge thermally stable polychips 3 is N, and N pieces of edge thermally stable polychips 3 are uniformly distributed in a ring Outside the central thermally stable polysheet 2, where N≥6. Both the central heat-stable poly-chip 2 and the edge heat-stabilized poly-chip 3 are circular. The diameter of the central heat-stable poly-chip 2 is 6 mm, and the diameter of the edge heat-stabilized poly-chip 3 is 3 mm. The wear-resistant matrix 1 also includes a nickel-based alloy, and the nicke...

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Abstract

The invention discloses an abrasion-resistant substrate, a manufacturing method and a gauge-protection abrasion-resistant block. Compared with a current abrasion-resistant material used in the field of oil and gas exploitation, the abrasion-resistant substrate is advantaged in that hardness can be greatly improved. A nickel-based alloy is used as an impregnated material, and has extremely-high strength after high-temperature sintering and re-condensing, the integral hardness of the abrasion-resistant substrate is favorably improved. The gauge-protection abrasion-resistant block is equivalent with a traditional diamond composite sheet gauge-protection tooth in abrasion-resistance of a thermostabilization glomerocryst sheet; besides, the abrasion-resistance of the whole substrate is obviously improved compared with a traditional steel body drill bit; besides, the substrate has a better effect in hardness; at the same size condition, the cost of the substrate is only 1 / 5 of that of the traditional diamond composite sheet. Furthermore, the gauge-protection abrasion-resistant block is preferably embedded in the surface of the steel body drill bit in a brazing mode; when the abrasion-resistant block is damaged after long-term use, the abrasion-resistant block can be conveniently changed; the service life of the drill bit is better prolonged; and cost of drilling construction is lowered.

Description

technical field [0001] The invention relates to the field of oil and gas exploitation, in particular to a wear-resistant substrate, a preparation method and a diameter-gauge wear-resistant block. Background technique [0002] At present, in the field of oil and gas geological drilling, steel body drill bits have replaced matrix drill bits in large quantities due to their advantages of simple manufacturing process and low material cost, and have been widely used. However, the wear resistance of the gauge wall of the steel body drill bit is much worse than that of the matrix drill bit. In the prior art, this problem is mostly solved by surfacing wear-resistant materials or inlaid diamond composite sheets, but the above-mentioned methods all have obvious defects: first, the wear resistance of the existing wear-resistant materials for surfacing is not ideal, and the surfacing The welding quality is difficult to guarantee; second, the cost of inlaying diamond composite sheets is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00B22F5/00C22C29/06C22C29/08
CPCB22F1/0003B22F5/00B22F2005/001C22C29/067C22C29/08
Inventor 苏益仁毛忠仁程兴发秦宗森
Owner CHENGDU HUILINGFENG DIAMOND BIT