CN101234317A - Process for synthesizing coarse grain cubic boron nitride monocrystal - Google Patents
Process for synthesizing coarse grain cubic boron nitride monocrystal Download PDFInfo
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- CN101234317A CN101234317A CNA2007101900002A CN200710190000A CN101234317A CN 101234317 A CN101234317 A CN 101234317A CN A2007101900002 A CNA2007101900002 A CN A2007101900002A CN 200710190000 A CN200710190000 A CN 200710190000A CN 101234317 A CN101234317 A CN 101234317A
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Abstract
The invention relates to a synthetic method for coarse granule cubic boron nitride (CBN) single crystal (the peak value is 40/45 and the coarsest granule reaches 25/30), and the CBN single crystal is usually used in high efficient coarse grinding processing of deep graver amount. 80 to 90 percent of weight ratio of hexagonal boron nitride (hBN) with G. I=2-4 and 10 to 20 percent of weight ratio of catalyst are mixed well, and then are put into a mould to be pressed into a pre-synthetic bar, and then the pre-synthetic bar, a carbon tube, a carbon disc, a conductive steel ring and a pyrophyllite block are assembled into a pre-synthetic block, then the coarse granule single crystal can be obtained on a cubic hinge press under the pressure of 4 to 6GPa and the temperature of 1500 to 2000 DEG C for 20 to 25min. The synthetic method can be used for manufacturing coarse granule CBN single crystal: the peak value is 40/45 and the coarsest granule reaches 25/30, and the CBN single crystal is used in coarse grinding processing of deep graver amount, thus providing objective condition for high efficient coarse grinding processing.
Description
Technical field:
The present invention relates to the synthetic method of a kind of coarse grain cubic boron nitride (CBN) monocrystalline (peak value 40/45, coarse grain reach 25/30), this kind CBN monocrystalline often is used in the high efficiency corase grind processing of dark bite.
Background technology:
The growth of CBN monocrystalline is difficult, in the synthetic CBN monocrystalline method of common HTHP, its peak value is just thicker about 70/80, although people such as Zhang Tiechen once reported the synthetic of oversized particles CBN monocrystalline, but the amount of growth but seldom, and the processing of high efficiency corase grind is limited by coarse granule CBN monocrystalline raw material always.
Summary of the invention:
The object of the present invention is to provide a kind of synthetic method that is used for the coarse granule CBN monocrystalline of high efficiency corase grind processing usefulness.
The object of the present invention is achieved like this: use hexagonal boron nitride (hBN) the weight ratio 80-90% of G.I=2-4 and the catalyst of weight ratio 10-20% fully to mix, and put into mould together and be pressed into pre-synthetic rod, this pre-synthetic rod and carbon pipe, carbon plate, conducting steel ring, pyrophillite piece are assembled into pre-synthetic piece, on cubic hinge press, 4-6GPa keep-ups pressure, temperature 1500-2000 ℃, time 20-25 minute synthetic can obtain the coarse granule monocrystalline.
The present invention can make coarse granule CBN monocrystalline: peak value 40/45, and coarse grain reaches 25/30, and this kind CBN monocrystalline is used for the processing of dark bite corase grind, for the processing of high efficiency corase grind provides objective condition.
The specific embodiment:
Embodiment 1: use 80 kilograms of catalyst with 20 kilograms of hexagonal boron nitride (hBN) of G.I=2-4 fully to mix, and put into mould together and be pressed into pre-synthetic rod, this pre-synthetic rod, carbon pipe, carbon plate, conducting steel ring, pyrophillite piece are assembled into pre-synthetic piece, on cubic hinge press, 4-6GPa keep-ups pressure, temperature 1500-2000 ℃, time 20-25 minute synthetic can obtain the coarse granule monocrystalline.
Embodiment 2: use 90 kilograms of catalyst with 10 kilograms of hexagonal boron nitride (hBN) of G.I=2-4 fully to mix, and put into mould together and be pressed into pre-synthetic rod, this pre-synthetic rod, carbon pipe, carbon plate, conducting steel ring, pyrophillite piece are assembled into pre-synthetic piece, on cubic hinge press, 4-6GPa keep-ups pressure, temperature 1500-2000 ℃, time 20-25 minute synthetic can obtain the coarse granule monocrystalline.
Claims (2)
1, a kind of synthetic method of coarse grain cubic boron nitride monocrystal, it is characterized in that: use hexagonal boron nitride (hBN) the weight ratio 80-90% of G.I=2-4 and the catalyst of weight ratio 10-20% fully to mix, and put into mould together and be pressed into pre-synthetic rod, this pre-synthetic rod and carbon pipe, carbon plate, conducting steel ring, pyrophillite piece are assembled into pre-synthetic piece, on cubic hinge press, the 4-6GPa that keep-ups pressure, temperature 1500-2000 ℃, time 20-25 minute synthetic can obtain the coarse granule monocrystalline.
2, the synthetic method of coarse grain cubic boron nitride monocrystal according to claim 1 is characterized in that: the synthetic coarse granule monocrystalline that obtains: peak value 40/45, coarse grain reaches 25/30, is used for the processing of dark bite corase grind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101900002A CN101234317A (en) | 2007-11-16 | 2007-11-16 | Process for synthesizing coarse grain cubic boron nitride monocrystal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101900002A CN101234317A (en) | 2007-11-16 | 2007-11-16 | Process for synthesizing coarse grain cubic boron nitride monocrystal |
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| CN101234317A true CN101234317A (en) | 2008-08-06 |
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| CNA2007101900002A Pending CN101234317A (en) | 2007-11-16 | 2007-11-16 | Process for synthesizing coarse grain cubic boron nitride monocrystal |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102631867A (en) * | 2012-04-25 | 2012-08-15 | 河南理工大学 | Superhard titanium-silicon-carbon combined cubic boron nitride composite material |
| CN103521133A (en) * | 2013-10-22 | 2014-01-22 | 许斌 | High-impact-toughness cubic boron nitride, synthetic method and application thereof |
| CN105170029A (en) * | 2015-07-16 | 2015-12-23 | 河南飞孟金刚石工业有限公司 | Synthetic method of granularity-centralized cubic boron nitride |
-
2007
- 2007-11-16 CN CNA2007101900002A patent/CN101234317A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102631867A (en) * | 2012-04-25 | 2012-08-15 | 河南理工大学 | Superhard titanium-silicon-carbon combined cubic boron nitride composite material |
| CN102631867B (en) * | 2012-04-25 | 2014-06-18 | 河南理工大学 | Superhard titanium-silicon-carbon combined cubic boron nitride composite material |
| CN103521133A (en) * | 2013-10-22 | 2014-01-22 | 许斌 | High-impact-toughness cubic boron nitride, synthetic method and application thereof |
| CN103521133B (en) * | 2013-10-22 | 2015-06-03 | 山东建筑大学 | High-impact-toughness cubic boron nitride, synthetic method and application thereof |
| CN105170029A (en) * | 2015-07-16 | 2015-12-23 | 河南飞孟金刚石工业有限公司 | Synthetic method of granularity-centralized cubic boron nitride |
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Owner name: HENAN HUANG HE WHIRL WIND GROUP CO., LTD. Free format text: FORMER OWNER: HENAN HUANGHE ENTERPRISES GROUP CO., LTD. Effective date: 20100712 |
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Effective date of registration: 20100712 Address after: 461500 No. 200 Renmin Road, Henan, Changge Applicant after: Henan Huanghe Whirlwind Co., Ltd. Address before: 461500 No. 200 Renmin Road, Henan, Changge Applicant before: Henan Huanghe Industrial Group Co., Ltd. |
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Open date: 20080806 |