Hot pressing high phosphorus iron base diamond drilling bit and preparation method thereof

A diamond and fund technology is applied in the field of hot-pressed high-phosphorus iron-based diamond drill bits and their preparation, which can solve the problems of low drilling efficiency, diamond grain loss, and poor wear resistance of the matrix, and achieves easy adjustment and control, and reduces sintering. Good temperature and wettability

Inactive Publication Date: 2008-03-19
CHINA UNIV OF GEOSCIENCES (WUHAN)
View PDF0 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of diamond drill bit has played a certain effect in the past production practice, but this kind of diamond drill bit has the following disadvantages: 1) poor adaptability; 2) matrix performance is difficult to adjust; 3) sintering process is difficult to master, for example , when drilling into hard, dense and weakly abrasive rock formations, when diamond bits with high tungsten carbide content are used, the carcass wear is often very slow, and the diamond bits are difficult to cut, and cannot play a cutting role on rocks, resulting in low drilling efficiency ; and for the so

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] The preparation method of the hot-pressed high-phosphorus iron-based diamond drill bit includes the following steps:

[0028] 1. Material preparation: calculate and weigh the carcass material and diamond according to the designed carcass and diamond bit specifications. The particle size of the various components of the carcass material is 200-300 mesh. The components of the carcass material and its The mass percentage content is Fe powder 35%~50%, P 3%~6%, B 1-2%, Ni powder 5%~10%, Co powder 5%~7%, 663-Cu powder 25%~32 %, Mn powder 2%~3%, Ti powder 1%~2%, rare earth La 1.5~2%, rare earth Ce 1.0~1.5%; the content of diamond is 75%~95% of the total diamond and matrix material ( Volume concentration), the diamond adopts a mixture of any two or three of the diamond size ranges of 40 / 45 mesh, 45 / 50 mesh, 50 / 60 mesh or 60 / 70 mesh;

[0029] 2. Powder mixing and mixing: Mix the prepared matrix material in a ball mill for 12 hours, then add diamond and mix for another 3 to 4 hours t...

Example Embodiment

[0032] Example 1:

[0033] φ59 hot-pressed high-phosphorus iron-based diamond drill bit for drilling granite with drillability of 9-10.

[0034] Carcass material (the following mass%, 200 mesh ~ 300 mesh): Fe 46%, 663-Cu 28%, P 3%, B 1%, Ni9%, Co 6%, Mn 2%, Ti 2%, rare earth La 1.5%, rare earth Ce 1.5%; diamond concentration 90% (volume concentration), among which JR5 type 40 / 45 diamond 40%, 2700 type 50 / 60 diamond 60% (the following are volume concentrations).

[0035] Sintering process parameters: design pressure 16MPa, set sintering temperature 950℃, heat preservation 3min;

[0036] Drilling parameters: weight on bit 1000kg, speed 600rpm, pump volume 30L / min;

[0037] The drilling time of this diamond bit is 1.82m / h, and the service life can reach 42 meters.

Example Embodiment

[0038] Example 2:

[0039] The φ75 hot-pressed high-phosphorus iron-based diamond drill bit has a drillability of 10-11 grade hard and dense quartzite.

[0040] Carcass material (200 mesh ~ 300 mesh): Fe 50%, 663-Cu 25%, P 4%, B1%, Ni 9%, Co 5%, Mn 2.5%, Ti 1.0%, rare earth La 1.5%, rare earth Ce 1.0%; diamond concentration 75% (volume concentration), among them, JR5 type 45 / 50 mesh diamond 60%, 2700 type 50 / 60 mesh diamond 40%.

[0041] Sintering process parameters: pressure 15MPa, temperature 940℃, heat preservation 2min.

[0042] Drilling parameters: drilling pressure 1500kg, rotation speed 450rpm, pump capacity 35L / min;

[0043] The drilling time of this diamond bit is 1.22m / h, and the life span can reach 24 meters.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Granularityaaaaaaaaaa
Login to view more

Abstract

The invention relates to a hot compression high phosphorus iron-base diamond bit and the preparation method. The content of the diamond is 75 percent to 95 percent, the matrix materials have the component and the content that Fe powder is 35 percent to 50 percent; P is 3 percent to 6 percent; B is 1 percent to 2 percent; Ni is powder 5 percent to 10 percent; Co powder is 5 percent to 7 percent; 663-Cu powder is 25 percent to 32 percent; Mn powder is 2percent to 3 percent; Ti powder is 1 percent to 2 percent; rare earth La is 1.5 percent to 2 percent, and rare earth Ce is 1.0 percent to 1.5 percent. The preparation method comprises the procedures of material preparation, material packing and material mixture, die filling, hot-pressed sintering. The invention has the advantages that the matrix materials are widely used, and the cost is low; the sintering temperature is decreased; the hot etching of the iron to the diamond under high temperature is reduced; and the service life of the drill bit are improved; the drill bit has a broad spectrum; and the application scope is wide.

Description

technical field [0001] The invention relates to a hot-pressed high-phosphorus iron-based diamond drill bit and a preparation method thereof. Background technique [0002] The matrix material used in existing diamond drill bits for core drilling basically uses tungsten carbide as the skeleton component, and the content of tungsten carbide is as high as 55% or higher; even in the matrix composition of thin-walled diamond drill bits, tungsten carbide The content is also more than 20%. This kind of diamond drill bit has played a certain effect in the past production practice, but this kind of diamond drill bit has the following disadvantages: 1) poor adaptability; 2) matrix performance is difficult to adjust; 3) sintering process is difficult to master, for example , when drilling into hard, dense and weakly abrasive rock formations, when diamond bits with high tungsten carbide content are used, the carcass wear is often very slow, and the diamond bits are difficult to cut, and...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): E21B10/46C22C30/02B22F9/04B22F3/16
Inventor 杨洋潘秉锁杨凯华
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap