CN2790572Y - Medium for synthesizing diamond - Google Patents
Medium for synthesizing diamond Download PDFInfo
- Publication number
- CN2790572Y CN2790572Y CN 200420074999 CN200420074999U CN2790572Y CN 2790572 Y CN2790572 Y CN 2790572Y CN 200420074999 CN200420074999 CN 200420074999 CN 200420074999 U CN200420074999 U CN 200420074999U CN 2790572 Y CN2790572 Y CN 2790572Y
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- dolomite
- talcum
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- utility
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Abstract
The utility model relates to a medium for synthesizing diamond, which belongs to the technical field of equipment for synthesizing diamond. The utility model is composed of a sealing layer of an outer layer and a pressure transmission layer of an inner layer, wherein the sealing layer and the pressure transmission layer are mainly made of dolomite and talcum. The weight ratio of the dolomite and the talcum is 80 to 85: 20 to 15 in the sealing layer and the pressure transmission layer. Water glass in the weight ratio of the five percent to the nine percent of both of the dolomite and the talcum is added in the dolomite and the talcum. The thirty percent of the sealing layer is made of the dolomite in 10 to 18 units and talcum coarse material, the fifty percent is made of the dolomite in 18 to 36 units and talcum middle materials, and twenty percent is made of the dolomite in fewer than 36 units, talcum fine materials and the water glass which takes the five percent to the seven percent of the total weight. The pressure transmission layer is made of dolomite in fewer than 80 units, the talcum fine materials and the water glass which takes the seven percent to the nine percent of the total weight. The utility model has the advantage of stable performance.
Description
Technical field
The utility model belongs to the diamond synthesis equipment technical field, particularly a kind of diamond synthesis medium.
Background technology
Adopting top press to carry out diamond when synthetic, need place cavity in the medium to graphite flake, dielectric material is a pyrophillite.The crystallization water is arranged in the pyrophillite, and under high temperature, condition of high voltage, pyrophillite can undergo phase transition, and makes pyrophillite change Ke Jingshi, siderite into, and its transition process is accompanied by volume contraction, and the pressure in the synthetic chamber is descended, and pressure transmission, sealing property descend.Simultaneously, in heating process, the crystallization water is decomposed to form hydrogen, oxygen in the synthetic cavity of sealing, hydrogen, oxygen impurities influence adamantine nucleation and grow up, hydrogen, oxygen impurities also might enter crystals or be present in diamond crystal inside with the form of metal oxide, influence the quality of diamond product.And water is to having a significant impact the service life of hard alloy top hammer.
The utility model content
The utility model purpose is to provide a kind of diamond synthesis medium of stable performance.
For reaching above-mentioned purpose, the utility model adopts following technical scheme: the diamond synthesis medium, to form by the pressure transfer of outer field sealant and internal layer, and sealant and pressure transfer are mainly made by dolomite and talcum.
The weight ratio of dolomite and talcum is 80-85: 20-15 in sealant and the pressure transfer.
Add the waterglass that accounts for the two weight ratio 5-9% in dolomite and the talcum.
Sealant by material, 20% 36 in 30% 10-18 purpose dolomite and talcum coarse fodder, 50% 18-36 purpose dolomite and the talcum below the order dolomite and talcum fines and account for above-mentioned gross weight and make than the waterglass of 5-7%, pressure transfer is made by dolomite below 80 orders and talcum fines and the waterglass that accounts for its weight ratio 7-9%.
Diamond synthesis of the present utility model is with in the medium, and sealant and pressure transfer are respectively by mixing pressure transfer material and waterglass, sealant material and waterglass, the mold pressing of injection mould, drying and make.
This application in big cavity powdery technology and big cavity sheet technology has obtained remarkable result.It has reduced the heat conductivity of complex media, and the thermograde of synthetic cavity center and marginal portion is diminished; Avoided synthetic cavity phase transformation problem, made in the diamond synthesis process, to keep a pressure stable field; Can reduce the complex media pretreatment temperature, shorten generated time; Make synthesis technique stable, good reproducibility.Compare with traditional pyrophillite transmission medium, can reduce synthesis pressure 3-4MPa, service life of equipment is prolonged; The compound lining thermal conductivity is low, can balanced synthetic cavity interior temperature distribution, and top hammer internal stress reduces, and can significantly reduce top hammer consumption; Can reduce resultant current 120-200A, the diamond synthesis energy consumption obviously reduces; Pressure transfer at high temperature has trace to expand, and crushing loses in can effectively replenishing, and the synthetic output of single improves 5%; Because pressure transfer has chemical inertness, the diamond synthesis quality improves.
Laboratory, Henan Huanghe Xuanfeng Co., Ltd. technique center utilizes the utility model diamond synthesis to carry out small lot diamond synthetic test with medium, uses the Ni of high pressure high temperature device-UPS-I hydraulic press, complex media-48.5 * Φ 33, catalyst alloy sheet-Φ 33 * 0.4
70Mn
25Co
5The G of alloy sheet, graphite flake-Φ 33 * 1.0
4D, composite conducting device-Φ 33 * 9, assembling mode-common paperback, catalyst * graphite flake=22 * 25, synthesis condition sees Table 1, synthesizes to the results are shown in Table 2.
Table 1
| Specimen coding | Synthesis pressure (MPa) | Resultant current (KA) | Synthetic power (KW) | Generated time (min) | Synthetic situation |
| 1 # | 88 | 2.58 | 3.2 | 15 | Stable |
| 2 # | 91 | 2.71 | 3.9 | 16 | Change |
Table 2
| Specimen coding | Per unit area yield (carat) | 〉=16Kgf (per unit area yield carat) | 〉=50/60 with thick (%) | Cavity inner wall phase transformation situation |
| 1 # | 33 | 7.2 | 82 | Do not have (not having photochromic layer substantially) |
| 2 # | 31 | 5.1 | 73 | (2-3mm photochromic layer) arranged |
Annotate: in table 1, the table 21
#Be the utility model medium, 2
#Be traditional pyrophillite medium.
Result of the test shows that (1) uses the utility model diamond synthesis generated time to shorten, and illustrative material heat-insulating property, electrical insulation capability improve.Can reduce hard alloy top hammer alternating thermal stress time of contact, reduce top hammer consumption, saves energy and enhancing productivity; (2) the synthetic cavity surface does not almost have phase change layer, process stabilizing in the building-up process, good reproducibility, illustrate that synthetic cavity pressure is evenly distributed, axial pressure gradient is less, can obviously improve the pressure field of crystal growth, for the growth of high quality crystal provides better growing conditions; (3) synthesis pressure reduces, and can effectively reduce equipment failure rate, prolong service life of equipment.
Description of drawings
Fig. 1 is a diamond synthesis of the present utility model dielectric structure schematic diagram.
The specific embodiment
The diamond synthesis medium is made up of the pressure transfer 4 of outer field sealant 2 and internal layer, and sealant 2 and pressure transfer 4 are mainly made by dolomite and talcum, and the weight ratio of dolomite and talcum is 80: 20.Sealant 2 by material, 20% 36 in 30% 10-18 purpose dolomite and talcum coarse fodder, 50% 18-36 purpose dolomite and the talcum below the order dolomite and talcum fines and account for above-mentioned gross weight and make than 6 ± 1% waterglass, pressure transfer 4 is made by dolomite below 80 orders and talcum fines and the waterglass (industrial five classes of GB4209-84) that accounts for its weight ratio 8 ± 1%.During use, the medium two ends are provided with conductive cap 1, and conductive cap is provided with pressure transfer 4 in the middle of 1 inboard, inboard two ends are provided with sealant 2 and pressure transfer 4 from outside to inside.3 are synthetic chamber.
Claims (1)
1. diamond synthesis medium, it is characterized in that: the pressure transfer by outer field sealant and internal layer is formed, and sealant and pressure transfer are mainly made by dolomite and talcum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420074999 CN2790572Y (en) | 2004-10-29 | 2004-10-29 | Medium for synthesizing diamond |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420074999 CN2790572Y (en) | 2004-10-29 | 2004-10-29 | Medium for synthesizing diamond |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2790572Y true CN2790572Y (en) | 2006-06-28 |
Family
ID=36806653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420074999 Expired - Lifetime CN2790572Y (en) | 2004-10-29 | 2004-10-29 | Medium for synthesizing diamond |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2790572Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100444944C (en) * | 2004-10-29 | 2008-12-24 | 郑州人造金刚石及制品工程技术研究中心 | Medium material for diamond synthesis and medium constituted therefrom |
| CN111589372A (en) * | 2020-05-08 | 2020-08-28 | 河南中南工业有限责任公司 | Mixed production process of heating element raw materials of cubic press |
-
2004
- 2004-10-29 CN CN 200420074999 patent/CN2790572Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100444944C (en) * | 2004-10-29 | 2008-12-24 | 郑州人造金刚石及制品工程技术研究中心 | Medium material for diamond synthesis and medium constituted therefrom |
| CN111589372A (en) * | 2020-05-08 | 2020-08-28 | 河南中南工业有限责任公司 | Mixed production process of heating element raw materials of cubic press |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: No. 24, Holly Street, hi tech Development Zone, Henan, Zhengzhou Province: 450001 Patentee after: Zhengzhou Artificial Diamond and Produce Engineering and Technological Research Center Co., Ltd. Address before: No. 24, Holly Street, hi tech Development Zone, Henan, Zhengzhou Province: 450001 Patentee before: Zhengzhou Synthetic Diamond and Products Engineering Technique Research Center |
|
| C56 | Change in the name or address of the patentee |
Owner name: ZHENG ZHOU MAN-MADE DIAMOND AND PRODUCTS ENGINEERI Free format text: FORMER NAME: ZHENG ZHOU MAN-MADE DIAMOND AND PRODUCTS ENGINEERING RESEARCH CENTER |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20141029 Granted publication date: 20060628 |