CN201056490Y - Heater for synthesizing cubic boron nitride - Google Patents
Heater for synthesizing cubic boron nitride Download PDFInfo
- Publication number
- CN201056490Y CN201056490Y CNU2007200897351U CN200720089735U CN201056490Y CN 201056490 Y CN201056490 Y CN 201056490Y CN U2007200897351 U CNU2007200897351 U CN U2007200897351U CN 200720089735 U CN200720089735 U CN 200720089735U CN 201056490 Y CN201056490 Y CN 201056490Y
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- Prior art keywords
- boron nitride
- heating
- cubic boron
- chamber
- graphite
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- Expired - Fee Related
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- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
The utility model relates to a heating device for synthesizing cubic boron nitride, which comprises a sleeve chamber synthesized by pyrophyllite blocks, an electrically-conductive steel ring, an electrically-conductive metal sheet, and graphite heating sheets, wherein a metal thin liner tube is embedded in the inner wall of the pyrophyllite blocks synthesized sleeve chamber, the metal thin liner tube forms a heating synthesis chamber together with the graphite heating sheets arranged at the upper and lower ends of the metal thin liner tube, a synthesizing material column is placed in the heating synthesis chamber, and a heating column is arranged at the central position of the synthesizing material column. By using the device, the effective utilization ratio of the heating synthesis chamber can be 97.5%, the unit cubic boron nitride yield can be improved by 10%, and the temperature distribution of the overall heating synthesis chamber is more uniform.
Description
Technical field
The utility model belongs to the synthetic facility technology field of material, especially for a kind of heating unit of synthesizing cubic boron nitride.
Background technology
At present, the industry synthesizing cubic boron nitride adopts the high pressure high temperature method to carry out usually, it is with behind hexagonal boron nitride powder and the catalyst powder uniform mixing composition starting material, be pressed in the cylindric piped carbon tube of packing into, a slice graphite heating sheet is respectively placed at two ends, form complete heating container, pack in the circular cylindrical cavity of pyrophyllite pressure transmission sealing block, two ends are placed metallic conduction tinsel and metallic conduction steel ring again, whole assembly block is put into the high-pressure working chamber of cubic apparatus synthesis press, by six pressurizations, feed big electric current simultaneously and make carbon tube heating, make hexagonal boron nitride under the high pressure high temperature condition, change into cubic boron nitride and carry out crystal growth.But because carbon adds the both sides in thermal synthesis chamber is carbon tube, having tube wall is 1.0～1.8mm wall thickness, because the wall thickness of tube wall is thicker, taken the high-pressure chamber space, cause heating synthetic cavity effective rate of utilization low, especially increase under the situation of synthetic cavity at needs, cause the inhomogeneous of composite crystals core Heating temperature easily, so that have influence on the generation effect of crystal seed.
The utility model content
The purpose of this utility model provides a kind of simple in structure, and is with low cost, saves growing space, the more uniform heating unit that is used for synthesizing cubic boron nitride of heating.
Realize that the technical scheme that the purpose of this utility model is taked is: this device has agalmatolite piece synthetic sleeve chamber, conducting steel ring, conductive metal sheet and graphite heating sheet, wherein, at agalmatolite piece sleeve cavity wall, be nested with the metal foil bushing pipe, the graphite heating sheet formation of metal foil bushing pipe and upper and lower end parts setting adds the thermal synthesis chamber, and adding the thermal synthesis intracavity holding has synthetic stock column, and its centre is provided with heated beam.
Described synthetic stock column is the hollow circular cylinder that is pressed into after being mixed by hexagonal boron nitride powder and catalyst dried bean noodles, and its hollow space cooperates with heated beam in adding the thermal synthesis chamber.
Described heated beam can adopt graphite post or other thermal conductor material.
The heating unit of the synthesizing cubic boron nitride of making according to such scheme, because the heating synthetic cavity adopts the metal foil bushing pipe, its cavity wall thickness is by 1.0～1.8mm, be reduced to 0.07～0.1mm, increased the area of heating synthetic cavity thus, make the effective rate of utilization that adds the thermal synthesis chamber bring up to 97.5%, can have more 11.9% the growth useful space, make per unit area yield cubic boron nitride output improve 10% than traditional heating synthetic cavity by original 85.6%.And reasonable in design, the heated beam of setting up can make the Heating temperature in whole synthetic chamber be more evenly distributed.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Embodiment
Referring to Fig. 1, the heating unit of synthesizing cubic boron nitride of the present utility model, be by agalmatolite piece synthetic sleeve chamber 1, conducting steel ring 2, conductive metal sheet 3, graphite heating sheet 4 are formed, 1 inwall is nested with metal foil bushing pipe 5 in agalmatolite piece sleeve chamber, metal foil bushing pipe 5 adds the thermal synthesis chamber with graphite heating sheet 4 formations of upper and lower end parts setting, and the centre that adds the thermal synthesis chamber is provided with heated beam 7, and this heated beam 7 can adopt graphite post or other thermal conductor material.The room part storing that adds the thermal synthesis chamber has synthetic stock column 6, synthetic stock column 6 be catalyst powder by 65% hexagonal boron nitride powder and 35% by even dry blending even after, granulation, suppression process and constitute synthetic stock column with hollow circular cylinder, the hollow space that should synthesize stock column 6 cooperates with graphite heating post 7, and outer cylinder surface cooperates with metal foil bushing pipe 5.With φ 40 cavitys commonly used is example, the wall thickness of graphite bushing pipe is 1.0～1.8mm, and use metal foil bushing pipe 5 in this case, its wall thickness has only 0.07～0.1mm, make the heating synthetic cavity can have more 11.9% the growth useful space, bring per unit area yield cubic boron nitride output to improve 10% beneficial effect thus.Upper and lower end parts at synthetic stock column 6 is equipped with graphite heating sheet 4, conductive metal sheet 3 and conducting steel ring 2 successively, and conducting steel ring 2 is placed at the two ends in agalmatolite piece sleeve chamber 1, and the rhombspar filler is housed in it.After described structure assembling, put into the high-pressure working chamber of cubic apparatus synthesis press, form the pressure of 5.0～5.5GPa by six pressurizations, feed big electric current simultaneously and make and add the high temperature that the thermal synthesis chamber adds 1400～1800 ℃ of thermosettings, hexagonal boron nitride changes into cubic boron nitride and carries out crystal growth under this high pressure high temperature condition.
Claims (3)
1. the heating unit of a synthesizing cubic boron nitride, it has agalmatolite piece synthetic sleeve chamber, conducting steel ring, conductive metal sheet and graphite heating sheet, it is characterized in that: be nested with the metal foil bushing pipe at agalmatolite piece sleeve cavity wall, the graphite heating sheet formation of metal foil bushing pipe and upper and lower end parts setting adds the thermal synthesis chamber, adding the thermal synthesis intracavity holding has synthetic stock column, and its centre is provided with heated beam.
2. the heating unit of synthesizing cubic boron nitride according to claim 1 is characterized in that: described synthetic stock column is the hollow circular cylinder that is pressed into after being mixed by hexagonal boron nitride powder and catalyst dried bean noodles, and its hollow space cooperates with heated beam in adding the thermal synthesis chamber.
3. the heating unit of synthesizing cubic boron nitride according to claim 1, it is characterized in that: described heated beam can adopt graphite post or other thermal conductor material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200897351U CN201056490Y (en) | 2007-03-20 | 2007-03-20 | Heater for synthesizing cubic boron nitride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200897351U CN201056490Y (en) | 2007-03-20 | 2007-03-20 | Heater for synthesizing cubic boron nitride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201056490Y true CN201056490Y (en) | 2008-05-07 |
Family
ID=39425333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200897351U Expired - Fee Related CN201056490Y (en) | 2007-03-20 | 2007-03-20 | Heater for synthesizing cubic boron nitride |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201056490Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110152558A (en) * | 2019-05-28 | 2019-08-23 | 河南四方达超硬材料股份有限公司 | A kind of sintering equipment and its application method of superhard material |
-
2007
- 2007-03-20 CN CNU2007200897351U patent/CN201056490Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110152558A (en) * | 2019-05-28 | 2019-08-23 | 河南四方达超硬材料股份有限公司 | A kind of sintering equipment and its application method of superhard material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHENGZHOU ZHONGNAN JET SUPERHARD MATERIALS CO., L Free format text: FORMER OWNER: HENAN ZHONGNAN INDUSTRIAL CO., LTD. Effective date: 20080425 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080425 Address after: High tech Zone of Henan province Zhengzhou city pagoda Street No. 15, zip code: 450000 Patentee after: Zhengzhou Zhongnan Jete Superabrasives Co., Ltd. Address before: Fangcheng County of Nanyang City, Henan province box 101 Henan South Industrial Co. Ltd., zip code: 473200 Patentee before: Nanyang Zhongnan Diamond Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080507 Termination date: 20130320 |