CN201136790Y - Synthesis bar for synthesizing artificial diamond - Google Patents
Synthesis bar for synthesizing artificial diamond Download PDFInfo
- Publication number
- CN201136790Y CN201136790Y CNU2007200648170U CN200720064817U CN201136790Y CN 201136790 Y CN201136790 Y CN 201136790Y CN U2007200648170 U CNU2007200648170 U CN U2007200648170U CN 200720064817 U CN200720064817 U CN 200720064817U CN 201136790 Y CN201136790 Y CN 201136790Y
- Authority
- CN
- China
- Prior art keywords
- synthetical
- diamond
- synthetic rod
- insulation sheet
- stick
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Crystals, And After-Treatments Of Crystals (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The utility model relates to a synthetical stick for synthetical artificial diamond, which has the structure that an adiabatic insulation sheet is arranged at the axial center of an existing synthetical stick in the same shaft, and the adiabatic insulation sheet is formed by dolomite. The diameter of the adiabatic insulation sheet is 70-85 percent of the diameter of the synthetical stick, and the thickness of the adiabatic insulation sheet is 1-2 mm. The synthetical stick has simple and reasonable structure as well as easy machining and manufacture, can effectively improve the temperature uniformity of the synthetical stick, improve the yield of the artificial synthetical diamond, can be used for matching with the existing artificial synthetical diamond technics and realize the industrial production. The synthetical stick can be used as an upgraded product of the existing synthetical stick for the artificial synthetical diamond.
Description
Technical field
The utility model relates to the artificially synthesizing diamond technical field, is meant a kind of synthetic rod of synthesis of artificial diamond especially.
Background technology
The static pressure method diamond synthesis, generally be that the synthesis material that will be made up of graphite and catalyst is made into cylindric, be called synthetic rod, then, synthetic rod is inlaid in the synthetic block assembly of being made up of leaf paraffin mass, plug, metallic conduction sheet, heating sheet, rhombspar cover etc. heat-insulation pressure keeping certain hour under 1300 celsius temperatures, 90--100GPa ultra-high voltage and diamond synthesis; The synthetic rod of this structure, its component is the good conductor of electricity, heat, therefore, the heat that sends when the heating sheet 3 of being located at the synthetic rod two ends begins with semisphere ripple shape when transmit at the synthetic rod center from heating sheet center, at certain heat-insulation pressure keeping in the time, diametric(al) in synthetic rod axial centre position then can produce the negative thermograde by center to synthetic rod surface, that is to say that core temperature height, surface temperature are low, shown in dash area among Fig. 1; Like this, just cause radial direction diamond synthesis productive rate, the grade of synthetic rod axial centre to descend significantly, influence the yield and the economic benefit of whole diamond synthesizing technology; Though can be by prolonging the heat-insulation pressure keeping time, make the synthetic rod bulk temperature reach the temperature of processing requirement, but bring like this unfavorable be conspicuous, on the one hand, prolongation along with the heat-insulation pressure keeping time, the temperature at synthetic rod two ends and center will substantially exceed the temperature of processing requirement, and the yield of diamond synthesis is lowered; On the other hand, along with the prolongation of heat-insulation pressure keeping time, increase is at double incited somebody to action in the consumption of electric energy, will improve the cost of diamond synthesis undoubtedly, wastes energy.Therefore, the synthetic rod structure of existing diamond synthesis is necessary to improve.
The utility model content
The purpose of this utility model be to overcome the deficiency of prior art and provide a kind of simple and reasonable, processing and manufacturing easily, can effectively improve the synthetic rod temperature homogeneity, improve the synthetic rod of a kind of synthesis of artificial diamond of synthesis of artificial diamond yield.
The utility model is to adopt following proposal to realize: at the coaxial partiting thermal insulation sheet that is provided with of existing synthetic rod axial centre, described partiting thermal insulation sheet is made of rhombspar; The diameter of described partiting thermal insulation sheet is the 70---85% of synthetic rod diameter; The thickness of described partiting thermal insulation sheet is 1---2mm.
The utility model is owing to adopt such scheme, axial central authorities are provided with the partiting thermal insulation sheet at synthetic rod, can effectively improve the electric current and the heat transmit mode of the axial middle position of synthetic rod, because, the heat that heatings sheet in synthetic rod two ends produces and the current delivery of output are during to the axial centre of synthetic rod, can't see through the partiting thermal insulation sheet and enter the other end, and can only pass through outside the partiting thermal insulation sheet circumference, the synthesis material of being made up of graphite and catalyst transmits and penetrates into the other side, like this, guaranteed that the heat of the axial middle position of synthetic rod and electric current can not interpenetrate on the one hand, avoid the synthetic rod core temperature too high, on the other hand, heat and electric current are by the outer synthesis material transmission of partiting thermal insulation sheet circumference, guaranteed the synthetic rod axial centre the diametric(al) temperature evenly, negative thermograde by center to surface can not appear, thereby effectively guarantee the homogeneity of synthetic rod bulk temperature, and then the yield of raising man-made diamond, compare with original synthetic rod, its diamond synthesis yield improves more than 10%, and the high grade diamond yield improves more than 5%; In sum, the utility model is simple and reasonable, processing and manufacturing easily, can effectively improve the synthetic rod temperature homogeneity, improve the synthesis of artificial diamond yield, can use with existing artificially synthesizing diamond process matching, can realize suitability for industrialized production, be suitable for renewal product as existing artificially synthesizing diamond synthetic rod.
Description of drawings
Accompanying drawing 1 is existing synthetic rod temperature transfer mode synoptic diagram.
Accompanying drawing 2 is the utility model structural representation.
In the accompanying drawing 2,1---synthetic rod body, 2---partiting thermal insulation sheet.
Embodiment
Referring to accompanying drawing 2, the synthetic rod of the utility model---a kind of synthesis of artificial diamond is made up of synthetic rod body 1, partiting thermal insulation sheet 2, described partiting thermal insulation sheet 2 is arranged at the axial centre of synthetic rod body 1 and coaxial with the synthetic rod body, and described partiting thermal insulation sheet is made of rhombspar; The diameter of described partiting thermal insulation sheet is the 70---85% of synthetic rod diameter; The thickness of described partiting thermal insulation sheet is 1---2mm.
Use the utility model diamond synthesis, its diamond yield can improve more than 10%, and the high grade diamond yield can improve more than 5%.
Claims (4)
1, a kind of synthetic rod of synthesis of artificial diamond comprises synthetic rod body (1), partiting thermal insulation sheet (2), it is characterized in that: described partiting thermal insulation sheet (2) is arranged at the axial centre of synthetic rod body (1) and coaxial with the synthetic rod body.
2, the synthetic rod of a kind of synthesis of artificial diamond according to claim 1 is characterized in that: described partiting thermal insulation sheet is made of rhombspar.
3, the synthetic rod of a kind of synthesis of artificial diamond according to claim 1 is characterized in that: the diameter of described partiting thermal insulation sheet is the 70---85% of synthetic rod diameter.
4, the synthetic rod of a kind of synthesis of artificial diamond according to claim 1 is characterized in that: the thickness of described partiting thermal insulation sheet is 1---2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200648170U CN201136790Y (en) | 2007-10-23 | 2007-10-23 | Synthesis bar for synthesizing artificial diamond |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200648170U CN201136790Y (en) | 2007-10-23 | 2007-10-23 | Synthesis bar for synthesizing artificial diamond |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201136790Y true CN201136790Y (en) | 2008-10-22 |
Family
ID=40037481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200648170U Expired - Fee Related CN201136790Y (en) | 2007-10-23 | 2007-10-23 | Synthesis bar for synthesizing artificial diamond |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201136790Y (en) |
-
2007
- 2007-10-23 CN CNU2007200648170U patent/CN201136790Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081022 Termination date: 20091123 |