CN104190324B - Super large cavity diamond synthesizing device - Google Patents
Super large cavity diamond synthesizing device Download PDFInfo
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- CN104190324B CN104190324B CN201410372335.6A CN201410372335A CN104190324B CN 104190324 B CN104190324 B CN 104190324B CN 201410372335 A CN201410372335 A CN 201410372335A CN 104190324 B CN104190324 B CN 104190324B
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Abstract
The present invention relates to super large cavity diamond synthesizing device, comprise super large cavity, super large cavity is provided with iron cup and lower iron cup vertically, heating plate is provided with between at the bottom of upper iron cup cup and at the bottom of lower iron cup cup, iron cup cup-mouth end is respectively equipped with composite bed, and composite bed skin is iron bowl, and internal layer is the composite construction that dolomite cake, graphite ring and white clouds stone ring are formed, graphite ring is electrically connected with the graphite column one end be arranged in iron cup by graphite paper, and the graphite column other end is electrically connected with at the bottom of iron cup cup; Super large cavity radially, internal layer is iron wall of cup, intermediate layer dolomite and outer be pyrophillite.The present invention has the following advantages: 1. directly heat, and electric current passes through graphite column.2. the conductive material at two ends is changed into nonmetal by metal, greatly improves heat insulating ability and stability.The present invention can apply on a large scale on large press apparatus, and breaching super large cavity diamond synthesis can not direct-fired forbidden zone, has filled up the blank of diamond industry.
Description
Technical field
The present invention relates to super large cavity diamond synthesizing device.
Background technology
At present, China superhard material Industry Market competition, along with the raising of domestic diamond single combined coefficient, diamond single crystal price drops many times, and domestic diamond manufacturer equipment is constantly upgraded, and synthetic cavity constantly expands.Due to the requirement of the condition of diamond film, along with the prolongation of heat time, in post synthesis phase, heat constantly accumulates, and causes Synthetic block cavity inner temperature easily higher; Meanwhile, along with the prolongation of time, diamond single crystal is grown up gradually, and the thing followed is that internal pressure declines.Cavity is larger, and temperature and pressure is more difficult to control.So be all utilize the mode of indirect to produce in industry inherent large cavity diamond synthesis process.
CN103406071A discloses a kind of diamond synthesizing device heated by alloy heat generating pipe, comprise for as the large cavity realizing diamond synthesizing container from nexine to skin successively, for forming the magnesium oxide layer of large cavity inwall, for the alloy heat generating pipe heated diamond synthesizing, for being incubated large cavity and stoping the dolomite of pyrophillite layer phase transformation, inner and carry out the pyrophillite layer that seals for external pressure being imported into large cavity; The steel ring for being communicated with external power source and alloy heat generating pipe by sheet metal is equiped with respectively in described diamond synthesizing device upper end of being heated by alloy heat generating pipe and bottom; Wherein, alloy heat generating pipe has that two ends are thin, the symmetrical structure of thick middle.This diamond synthesizing device is adopted alloy heat generating pipe and is realized the heating of synthesizer large cavity inside by the steel ring that sheet metal is communicated with external power source and alloy heat generating pipe, and steel ring is in high-temperature region, easily melts, and causes high pressure to blow out; The thermal conductivity of metal is good in addition, so be difficult to the good heat insulating ability and the stability that ensure synthesizer.
Summary of the invention
Problem to be solved by this invention is to provide a kind of super large cavity diamond synthesizing device, and this device has good heat insulating ability and stability, can realize Φ 55mm above super large cavity and for the synthesis of the diamond of better grade.
Technical scheme provided by the invention is: a kind of super large cavity diamond devices, comprise for as the super large cavity realizing diamond synthesizing container, super large cavity diameter (internal diameter) is 55-58mm, super large cavity is provided with iron cup and lower iron cup vertically, upper iron cup rim of a cup upward, lower iron cup rim of a cup down, heating plate is provided with between at the bottom of upper iron cup cup and at the bottom of lower iron cup cup, heating plate contacts and is electrically connected respectively with at the bottom of upper iron cup cup with at the bottom of lower iron cup cup, upper iron cup rim of a cup upper end and lower iron cup rim of a cup lower end are respectively equipped with composite bed, composite bed skin is iron bowl, iron bowl lateral wall contacts with pyrophillite layer and connects, composite bed internal layer is dolomite cake, the composite construction that graphite ring and white clouds stone ring are formed, wherein dolomite cake is filled in graphite ring, dolomite cake and graphite ring filling are in white clouds stone ring, a part for composite bed internal layer is positioned at iron bowl, another part stretches in iron cup, and the dolomite ring-side wall stretching into part in iron cup contacts with iron cup madial wall and connects, graphite ring is electrically connected with the graphite column one end be arranged in iron cup by graphite paper, the graphite column other end is electrically connected with at the bottom of iron cup cup, super large cavity radially, internal layer is iron wall of cup, intermediate layer dolomite and outer be pyrophillite.
Described graphite paper thickness is 1.00mm, and density is 1.33(gram/cm
3).
Described heating plate mixes by the weight ratio of 1:0.5-1:2 the disk be pressed into by graphite and dolomite.
Described graphite paper thickness is 1.00mm, and density is 1.33.
The present invention has the following advantages: 1. directly heat, and electric current passes through graphite column.2. the conductive material at two ends is changed into nonmetal by metal, greatly improves heat insulating ability and stability.
The present invention changes radio frequency into by traditional metallic conduction, not affecting under electric conductivity, greatly improves heat-insulating property, and the high-temperature stability of graphite is better than iron, steel, and conductive elements melting damage carbide alloy phenomenon would not occur.Under heating plate high pressure, resistance adjusts to 3.3 milliohms.
The present invention can apply on a large scale on large press apparatus, and breaching super large cavity diamond synthesis can not direct-fired forbidden zone, has filled up the blank of diamond industry.The present invention can save assembly cost, reduces diamond synthesizing cost.The present invention effectively prevent distributing of in diamond synthesis process heat and impurity, greatly reduces the consumption of top bell.Diamond output of the present invention, size distribution are stable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
See Fig. 1, the present invention includes for as the super large cavity realizing diamond synthesizing container, super large cavity diameter (internal diameter) is 55-58mm, super large cavity is provided with iron cup 10 and lower iron cup 9 vertically, upper iron cup 12 rim of a cup upward, lower iron cup 9 rim of a cup down, heating plate 8 is provided with between at the bottom of upper iron cup cup and at the bottom of lower iron cup cup, heating plate 8 contacts and is electrically connected respectively with at the bottom of upper iron cup cup with at the bottom of lower iron cup cup, and described heating plate mixes by the weight ratio of 1:0.5-1:2 the disk be pressed into by graphite and dolomite.Upper iron cup 10 rim of a cup upper end and lower iron cup 9 rim of a cup lower end are respectively equipped with composite bed, composite bed skin is iron bowl 1, iron bowl 1 lateral wall contacts with pyrophillite layer 7 and connects, composite bed internal layer is dolomite cake 4, the composite construction that graphite ring 2 and white clouds stone ring 3 are formed, wherein dolomite cake 4 is filled in graphite ring 2, dolomite cake 4 and graphite ring 2 are filled in white clouds stone ring 3, a part for composite bed internal layer is positioned at iron bowl 1, another part stretches in iron cup 9 or 10, and white clouds stone ring 3 lateral wall stretching into part in iron cup 9 or 12 contacts with iron cup madial wall and connects, graphite ring 2 is electrically connected with graphite column 11 one end be arranged in iron cup 9 or 10 by graphite paper 5, graphite column 11 other end is electrically connected with at the bottom of iron cup cup, radially, internal layer is iron wall of cup to super large cavity, intermediate layer is dolomite 6 and skin is pyrophillite 7.
Described graphite paper thickness is 1.00mm.
The present invention includes for as the super large chamber realizing diamond synthesizing container, 5, super large cavity 5 diameter is 55-58mm, super large cavity is radially followed successively by iron cup 6 and pyrophillite layer 7 from nexine to skin, the upper port of iron cup 6 and lower port are symmetrical composite bed, composite bed skin is iron bowl 1, iron bowl sidewall contacts with pyrophillite layer 7 and connects, composite bed internal layer is dolomite cake 2, the composite construction that graphite ring 3 and white clouds stone ring 4 are formed, wherein dolomite cake 2 is filled in graphite ring 3, dolomite cake 2 and graphite ring 3 are filled in white clouds stone ring 3, a part for composite bed internal layer is positioned at iron bowl 1, another part stretches in iron cup 6, and the dolomite ring-side wall stretching into part in iron cup 6 contacts with iron cup madial wall and connects, graphite ring 3 is electrically connected with graphite column by graphite paper 9, the fever tablet 8 be electrically connected with iron cup 6 is provided with in the middle part of super large cavity
Described graphite paper 9 thickness is 1.00mm, and density is 1.33(gram/cm
3).
When the present invention uses, catalyst and graphite are mixed the graphite column 11 made and is seated in synthetic cavity, adopt BT750 cylinder diameter press, to synthetic cavity pressurization, heat (voltage is applied on two iron bowls) by low-voltage and high-current power frequency mode, carry out diamond synthesis.
The applicant adopts the present invention to do ∮ 56mm cavity, heating current 1700 amperes, synthesizes 31,000 times, produces 8520000 carats, diamond, highly stable, without carbide alloy consumption, is much better than the level that the average myriagram of industry draws 0.5 kilogram.
Experiment shows that the present invention can apply on a large scale completely on large press apparatus, and breaching super large cavity diamond synthesis can not direct-fired forbidden zone, has filled up the blank of diamond industry.Adopt the present invention to save assembly cost, reduce diamond synthesizing cost.Adopt structure of the present invention to effectively prevent distributing of in diamond synthesis process heat and impurity, greatly reduce the consumption of top bell.Adopt diamond synthesis of the present invention, diamond output, size distribution are the most stable.
Claims (3)
1. a super large cavity diamond devices, comprise for as the super large cavity realizing diamond synthesizing container, it is characterized in that: super large cavity diameter is 55-58mm, super large cavity is provided with iron cup and lower iron cup vertically, upper iron cup rim of a cup upward, lower iron cup rim of a cup down, heating plate is provided with between at the bottom of upper iron cup cup and at the bottom of lower iron cup cup, heating plate contacts and is electrically connected respectively with at the bottom of upper iron cup cup with at the bottom of lower iron cup cup, upper iron cup rim of a cup upper end and lower iron cup rim of a cup lower end are respectively equipped with composite bed, composite bed skin is iron bowl, iron bowl lateral wall contacts with pyrophillite layer and connects, composite bed internal layer is dolomite cake, the composite construction that graphite ring and white clouds stone ring are formed, wherein dolomite cake is filled in graphite ring, dolomite cake and graphite ring filling are in white clouds stone ring, a part for composite bed internal layer is positioned at iron bowl, another part stretches in iron cup, and the dolomite ring-side wall stretching into part in iron cup contacts with iron cup madial wall and connects, graphite ring is electrically connected with the graphite column one end be arranged in iron cup by graphite paper, the graphite column other end is electrically connected with at the bottom of iron cup cup, super large cavity radially, internal layer is iron wall of cup, intermediate layer dolomite and outer be pyrophillite.
2. device according to claim 1, is characterized in that: described heating plate mixes by the weight ratio of 1:0.5-1:2 the disk be pressed into by graphite and dolomite.
3. device according to claim 1, is characterized in that: described graphite paper thickness is 1.00mm, and density is 1.33g/cm
3.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410372335.6A CN104190324B (en) | 2014-07-31 | 2014-07-31 | Super large cavity diamond synthesizing device |
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| CN201410372335.6A CN104190324B (en) | 2014-07-31 | 2014-07-31 | Super large cavity diamond synthesizing device |
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| CN104190324A CN104190324A (en) | 2014-12-10 |
| CN104190324B true CN104190324B (en) | 2016-04-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111013492B (en) * | 2019-11-27 | 2022-03-15 | 中山市海明润超硬材料有限公司 | Superhard material synthesis cavity and method for synthesizing superhard material by using same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5310447A (en) * | 1989-12-11 | 1994-05-10 | General Electric Company | Single-crystal diamond of very high thermal conductivity |
| CN204093412U (en) * | 2014-07-31 | 2015-01-14 | 红安安达新材料有限责任公司 | Super large cavity diamond synthesizing device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0779958B2 (en) * | 1987-05-08 | 1995-08-30 | 住友電気工業株式会社 | Large diamond synthesis method |
| KR101190555B1 (en) * | 2011-03-31 | 2012-10-16 | 강창신 | Synthetic diamond-forming device |
| US20120312227A1 (en) * | 2011-06-10 | 2012-12-13 | Gemesis Diamond Company | Multi-heater system for growing high quality diamond and a method for growing the same |
-
2014
- 2014-07-31 CN CN201410372335.6A patent/CN104190324B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5310447A (en) * | 1989-12-11 | 1994-05-10 | General Electric Company | Single-crystal diamond of very high thermal conductivity |
| CN204093412U (en) * | 2014-07-31 | 2015-01-14 | 红安安达新材料有限责任公司 | Super large cavity diamond synthesizing device |
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Address after: 438400 New Industrial Park of Qiaoersi Town, Hongan County, Hubei Province Patentee after: Hubei special material Co., Ltd. Address before: 438400 No. 1 Liangting Road, Qiaoer Town, Hongan County, Huanggang City, Hubei Province Patentee before: HONGAN ANDA NEW MATERIALS CO., LTD. |
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Effective date of registration: 20190627 Address after: 438400 No. 1, Five Buildings, Workers'Nancun, Chengguan Town, Hongan County, Hubei Province Patentee after: Hongan Huali Machinery Manufacture Co., Ltd. Address before: 438400 New Industrial Park of Qiaoersi Town, Hongan County, Hubei Province Patentee before: Hubei special material Co., Ltd. |