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Diamond drill bit composition used for sapphire bar drawing-out and preparing method of diamond drill bit composition

A technology of diamond drill bit and composition, which is applied in other manufacturing equipment/tools, engine components, turbines, etc., can solve the problems of diamond not falling off, affecting drilling efficiency, drill bit life, and excellent matrix, etc. High rod efficiency and good edge effect

Active Publication Date: 2017-05-31
BEIJING GANG YAN DIAMOND PROD CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] After research, the inventor found that when drilling hard and weakly abrasive single crystal sapphire, the most likely problem is that the carcass is too hard and the diamond is ground and cannot fall off, and the new layer of diamond cannot be exposed in time, which affects the drilling. Efficiency and Bit Life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] Accurately weigh the following components by weight percentage: 30 parts of ultrafine cobalt powder with a particle size of 2 μm, 10 parts of carbonyl nickel powder with a particle size of 8 μm, and 20 parts of copper-tin pre-alloyed powder with a particle size of 20 μm. 15 parts of ultrafine iron powder with a particle size of 8 μm, 5 parts of phosphor copper powder with a particle size of 25 μm, 15 parts of tungsten-copper pre-alloyed powder with a particle size of 2 μm, and 5 parts of β-silicon carbide whiskers with a particle size of 2.5 μm, with a particle size of The concentration of 150 μm diamond is 40% (according to the 400% concentration system), that is, the volume ratio of diamond in the working layer is 10%.

[0090] The surface of β-silicon carbide whiskers is pretreated according to the following method: use ethanol with a volume fraction of 55% as a dispersion medium, polyethylene glycol as a surface active substance, and then put it into an ultrasonic cl...

Embodiment 2

[0095] Accurately weigh the following components by weight percentage: 20 parts of ultrafine cobalt powder with a particle size of 5 μm, 15 parts of carbonyl nickel powder with a particle size of 3 μm, and 20 parts of copper-tin pre-alloyed powder with a particle size of 35 μm. 20 parts of ultrafine iron powder with a particle size of 3 μm, 10 parts of phosphor copper powder with a particle size of 40 μm, 12 parts of tungsten-copper pre-alloyed powder with a particle size of 1 μm, and 3 parts of β-silicon carbide whiskers with a particle size of 0.5 μm. The concentration of 250 μm diamond is 50% (according to the 400% concentration system), that is, the volume ratio of diamond in the working layer is 12.5%.

[0096] The surface of β-silicon carbide whiskers is pretreated according to the following method: use ethanol with a volume fraction of 55% as a dispersion medium, polyethylene glycol as a surface active substance, and then put it into an ultrasonic cleaner for 20 minutes ...

Embodiment 3

[0101]Accurately weigh the following components by weight percentage: 25 parts of ultrafine cobalt powder with a particle size of 5 μm, 10 parts of carbonyl nickel powder with a particle size of 3 μm, 15 parts of copper-tin pre-alloyed powder with a particle size of 35 μm, and a particle size of 3 μm 20 parts of superfine iron powder, 10 parts of phosphor copper powder with a particle size of 40 μm, 15 parts of tungsten-copper pre-alloyed powder with a particle size of 1 μm, and 5 parts of β-silicon carbide whiskers with a diameter of 0.5 μm and a particle size of 250 μm The concentration of diamond is 30% (according to the 400% concentration system), that is, the volume ratio of diamond in the working layer is 7.5%.

[0102] The surface of β-silicon carbide whiskers is pretreated according to the following method: use ethanol with a volume fraction of 55% as a dispersion medium, polyethylene glycol as a surface active substance, and then put it into an ultrasonic cleaner for 3...

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Abstract

The invention belongs to the field of hard and brittle material machining and provides a diamond drill bit composition used for sapphire bar drawing-out. The composition includes diamond and carcass powder. The carcass powder includes, by weight, 20-30 parts of superfine cobalt powder, 5-15 parts of nickel carbonyl powder, 0-20 parts of copper-tin pre-alloyed powder, 10-20 parts of superfine iron powder, 1-10 parts of phosphorus-copper powder, 5-15 parts of tungsten-copper pre-alloyed powder and 1-5 parts of beta-silicon carbide whiskers. The invention further provides a preparing method of the diamond drill bit composition used for sapphire bar drawing-out. A diamond drill bit used for sapphire bar drawing-out and prepared through the diamond drill bit composition used for sapphire bar drawing-out has the beneficial effects that both toughness and embrittlement are good, the diamond exposure is good, the drawing-out efficiency is high, the service life of the drill bit is long, and the drawing-out yield is high.

Description

technical field [0001] The invention belongs to the field of processing hard and brittle materials, and in particular relates to a diamond bit composition for digging out sapphire rods and a preparation method thereof. Background technique [0002] In recent years, with the development of electronic information technology, especially the rapid development of the semiconductor lighting industry, the market demand for sapphire substrates has become increasingly strong. Single crystal sapphire has been widely used due to its excellent optical properties, mechanical properties, high strength, high hardness, strong corrosion resistance, abrasion resistance, and excellent insulation properties. The LED substrate market and the consumer electronics market are the two major boosters of the sapphire explosion, because sapphire has high hardness (second only to diamond), high strength, and particularly good scratch-resistant and wear-resistant effects. Apple’s iPhone 5S lens The prot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C47/02C22C47/14B22F1/00B22F5/00C22C49/02C22C49/08C22C49/14C22C101/14
CPCB22F1/0003B22F5/00B22F2005/001C22C47/02C22C47/14C22C49/02C22C49/08C22C49/14
Inventor 徐强刘一波徐良杨志威葛科徐燕军
Owner BEIJING GANG YAN DIAMOND PROD CO
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