CN218026447U - Crucible mold for preparing special-shaped crystal - Google Patents
Crucible mold for preparing special-shaped crystal Download PDFInfo
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- CN218026447U CN218026447U CN202222333170.4U CN202222333170U CN218026447U CN 218026447 U CN218026447 U CN 218026447U CN 202222333170 U CN202222333170 U CN 202222333170U CN 218026447 U CN218026447 U CN 218026447U
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Abstract
The utility model discloses a crucible mould of preparation dysmorphism crystal, including the crucible body, this internal design mold core that is provided with of crucible, design mold core bottom and the laminating of this internal bottom surface of crucible, be provided with the clamping ring on the design mold core, crucible body top is provided with the crucible lid, the crucible lid is located the convex part that sinks that is provided with on the surface of clamping ring one side, convex part and clamping ring top butt sink, the crystal profile modeling through-hole has been seted up along the axial to the design mold core. The utility model discloses can effectively improve the crucible utilization ratio and improve crystal machining efficiency, greatly reduced preparation cost.
Description
Technical Field
The utility model relates to a new material preparation technical field, concretely relates to crucible mould of preparation dysmorphism crystal.
Background
The fluoride crystal is an excellent optical crystal material widely applied to various optical elements, wherein the barium fluoride crystal can be used as a middle infrared window and also is an excellent scintillation crystal material, the barium fluoride crystal lattice has cubic symmetry, and the density is 4.8g/cm 3 The decay time constants of fluorescence are respectively 0.6ns (fast component) and 620ns (slow component), the barium fluoride crystal has stable physicochemical property, is not deliquescent, has strong radiation damage resistance and wide light transmission range, and the decay time is the fastest scintillation crystal in the existing scintillation crystals at present and has higher density and light yield. With the progress of high-energy physics and nuclear physics science, accelerator and detector systems with larger scale and better performance are continuously established, the requirements on the performance of barium fluoride crystals are higher and higher, the sizes are larger and larger, the geometric shapes are more and more complex, and the demand is also larger and larger.
The finished barium fluoride scintillation crystal device is usually processed into a special-shaped structure, such as a pentagon, a hexagon, an asymmetric polygon and the like. The barium fluoride crystal blank is usually prepared into a cylinder, and then is processed into a special-shaped structure through milling, so that the processing consumes working hours, the space in a crucible mold can not be fully utilized for preparing the crystal, the crucible utilization rate is low, and the manufacturing cost of the barium fluoride scintillation crystal device is high.
Disclosure of Invention
The utility model aims to solve the technical problem and provide a crucible mould of preparation dysmorphism crystal can effectively improve the crucible utilization ratio and improve crystal machining efficiency, greatly reduced preparation cost.
In order to solve the technical problem, the utility model provides a crucible mould of preparation dysmorphism crystal, including the crucible body, this internal design mold core that is provided with of crucible, the laminating of this internal bottom surface of design mold core bottom and crucible, be provided with the clamping ring on the design mold core, crucible body top is provided with the crucible lid, the crucible lid is located clamping ring one side and is provided with the convex part that sinks on the surface, convex part and clamping ring top butt sink, crystal profile modeling through-hole has been seted up along the axial to the design mold core.
Furthermore, the number of the crystal copying through holes is multiple, a communicating groove is further formed in the bottom of the sizing mold core, a communicating channel is formed by the communicating groove and the bottom surface in the crucible body in a matched mode, and a communicating cavity structure is formed by the communicating channel and the plurality of crystal copying through holes in a matched mode.
Further, a plurality of the crystal profiling through holes are distributed and arranged along the circumferential direction.
Furthermore, a threaded hole is formed in the middle of the shaping mold core, and a plug screw is arranged in the threaded hole.
Further, design mold core middle part is provided with dodges the groove, the tank bottom of dodging the groove is provided with the lockhole, dodge groove and crystal profile modeling through-hole through connection, dodge the inslot and be provided with the filler block, be provided with the via hole on the filler block, the filler block passes via hole and lockhole threaded connection through set screw.
Further, crucible body is including the end crucible and the feed bin of range upon range of setting, be provided with the spacing convex part of cooperation between feed bin bottom and the end crucible top.
Further, the height of the shaping mold core is smaller than the height of the inner cavity of the bottom crucible.
Further, the crucible body, the shaping mold core, the pressure ring and the crucible cover are all prepared from high-purity isostatic pressing graphite with ash content of less than 50 ppm.
The utility model has the advantages that:
1. the crystal blank prepared by the crucible grinding tool does not need milling and grinding, is directly of a designed special-shaped structure, greatly reduces the processing cost, consumes time in processing, can greatly reduce the cost, reduces the raw material loss caused by grinding, and improves the production efficiency.
2. If the size of the prepared crystal blank needs to be changed, only the shaping mold core needs to be remachined and replaced, and the whole crucible does not need to be remachined, so that the preparation cost is greatly reduced.
3. The design of clamping ring can press the design mold core and establish on this internal bottom surface of crucible, and the clamping ring cooperation crucible lid can carry out position restriction to the design mold core, and the design mold core can not take place to float or remove in this internal emergence of crucible.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic cross-sectional view of fig. 1 according to the present invention;
figure 3 is a schematic illustration of the exploded structure of figure 1 of the present invention;
FIG. 4 is a schematic view of the bottom structure of the shaping mold core of the present invention;
fig. 5 is the utility model discloses design mold core structure sketch map convenient to get the material.
Detailed Description
The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.
Referring to fig. 1 to 4, the utility model discloses a preparation dysmorphism crystal's crucible mould's an embodiment specifically is used for preparing barium fluoride crystal, including crucible body 1, this internal design mold core 2 that is provided with of crucible, the laminating of this internal bottom surface of design mold core bottom and crucible, be provided with clamping ring 3 on the design mold core, crucible body top is provided with crucible lid 4, crucible lid is located the compression ring one side and is provided with the convex part 5 that sinks on the surface, convex part and clamping ring top butt sink, four crystal profile modeling through-holes 6 have been seted up along the axial to the design mold core, along same circumference evenly distributed, make full use of design mold core's space. The weight homoenergetic of clamping ring and crucible lid is all can be exerted on the design mold core to forming the ascending spacing of axial to the design mold core, in design mold core radial direction, by the restriction of crucible body, and owing to exert pressure, the design mold core is also by effective stall.
In order to guarantee that the length and the size of each crystal are the same in the process of preparing a plurality of crystals and avoid the phenomenon of poor height, a communicating groove 7 is further arranged at the bottom of the sizing mold core and matched with the bottom surface in the crucible body to form a communicating channel, the communicating channel is matched with the plurality of crystal copying through holes to form a communicating cavity structure, and after the raw materials are melted, the raw materials can guarantee that the liquid level in each crystal copying through hole is kept at the same height through the communicating cavity structure. Still with foretell crucible body design for the end crucible 13 and the feed bin 14 of range upon range of setting, the installation of the design mold core of being convenient for with take out, be provided with the spacing convex part 15 of cooperation between feed bin bottom and the end crucible top, the concentric equipment of being convenient for. The height of the shaping mold core is smaller than the height of the inner cavity of the bottom crucible, so that the butt joint of the bottom crucible and the storage bin and the butt joint of the shaping mold core and the compression ring form a height difference, the butt joint of the shaping mold core and the compression ring is located below, and melted raw materials cannot seep out of the crucible body at the position.
Use this crucible mould, adopt crucible descent method crystal growth furnace growth barium fluoride crystal, at first place end crucible on crucible holds in the palm, end crucible bottom surface is smooth, hold in the palm closely laminating with crucible, and crucible at the bottom of guaranteeing hold in the palm whole be located at the furnace centerline that descends, place the design mold core inside end crucible, then install the clamping ring, rich tongue of feed bin on the clamping ring and with end crucible contact afterwards, add the barium fluoride raw materials and the deoxidant of misce bene, cover tight crucible lid at last, crucible lid and clamping ring cooperation, can be fixed with the design mold core, guarantee not take place to float or remove when crystal raw materials melts.
After the die and the raw materials are assembled and placed, the heater and the heat-insulating cylinder are sequentially installed, then the center of the crucible, the center of the heater and the center of the heat-insulating cylinder are adjusted, the hearth is closed after the three are concentric, a vacuumizing procedure is started, and when the vacuum degree reaches 5 x 10 -3 Pa, heating to 1300 ℃ to melt the raw materials. After the temperature is balanced, the crucible mold descends at the speed of 0.5mm/h, and the descending distance of the crucible mold is 250mm, so that the crystal growth process is completed. Then slowly cooling to room temperature at the speed of 10 ℃/h. After the crystal is completely cooled to be balanced with the room temperature, the crucible cover and the pressure ring are removed, and then the grown barium fluoride crystal can be taken out, and the grown crystal is complete, has no crack, is transparent,No visible impurities.
In an embodiment, because be the solid after crystal growth, and plugged up crystal profile modeling through-hole, the manual work is got the material in-process, and the design mold core snatchs inconveniently, consequently is provided with the screw hole at design mold core middle part, and threaded hole is provided with the end cap screw, through drawing the end cap screw, can take out the design mold core fast, guarantees the simple operation nature of design mold core in getting the material stage.
In one embodiment, the purpose of the method is the same as that of the previous embodiment, specifically, another design is provided, the shaping mold core is designed to be provided with an avoiding groove 8 in the middle, the bottom of the avoiding groove is provided with a lock hole 9, the avoiding groove is communicated with the crystal profiling through hole, a filling block 10 is arranged in the avoiding groove, a through hole 11 is formed in the filling block, the filling block penetrates through the through hole through a fixing screw 12 to be in threaded connection with the lock hole, and when the taking operation is to take the shaping mold core firstly and then take the crystal, the fixing screw can assist in taking out the shaping mold core; when the material taking operation is to take the crystal firstly and then take the shaping mold core, the fixing screw is removed, then the filling block is taken out, and at the moment, one side edge of the crystal is exposed in the avoiding groove to provide a thrust surface for pushing the crystal to move upwards, so that the crystal can be taken out in advance, and the operation flexibility is improved.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its aspects.
Claims (8)
1. The utility model provides a crucible mould of preparation dysmorphism crystal, a serial communication port, includes the crucible body, this internal design mold core that is provided with of crucible, design mold core bottom and this internal bottom surface laminating of crucible, be provided with the clamping ring on the design mold core, crucible body top is provided with the crucible lid, the crucible lid is located clamping ring one side and is provided with the convex part that sinks on the surface, the convex part and the clamping ring top butt sink, crystal profile modeling through-hole has been seted up along the axial to the design mold core.
2. The crucible mold for preparing special-shaped crystals as claimed in claim 1, wherein the number of the crystal copying through holes is multiple, the bottom of the shaping mold core is further provided with a communicating groove, the communicating groove and the bottom surface in the crucible body cooperate to form a communicating channel, and the communicating channel and the multiple crystal copying through holes cooperate to form a communicating cavity structure.
3. The crucible mold for preparing a shaped crystal according to claim 2, wherein a plurality of the crystal tracing through holes are distributed along a circumferential direction.
4. The crucible mold for preparing the special-shaped crystal as claimed in claim 3, wherein a threaded hole is formed in the middle of the shaping mold core, and a plug screw is arranged in the threaded hole.
5. The crucible mold for preparing the special-shaped crystal according to claim 3, wherein an avoiding groove is formed in the middle of the shaping mold core, a lock hole is formed in the bottom of the avoiding groove, the avoiding groove is in through connection with the crystal profiling through hole, a filling block is arranged in the avoiding groove, a through hole is formed in the filling block, and the filling block penetrates through the through hole through a fixing screw to be in threaded connection with the lock hole.
6. The crucible mold for preparing special-shaped crystals as claimed in claim 1, wherein the crucible body comprises a bottom crucible and a bin which are arranged in a stacked mode, and a convex part for matching and limiting is arranged between the bottom of the bin and the top of the bottom crucible.
7. The crucible mold for preparing special-shaped crystals as claimed in claim 6, wherein the height of the shaping mold core is smaller than the height of the inner cavity of the bottom crucible.
8. The crucible mold for preparing the special-shaped crystal as claimed in claim 1, wherein the crucible body, the shaping mold core, the pressure ring and the crucible cover are all prepared by using high-purity isostatic pressing graphite with ash content of less than 50 ppm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222333170.4U CN218026447U (en) | 2022-09-02 | 2022-09-02 | Crucible mold for preparing special-shaped crystal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222333170.4U CN218026447U (en) | 2022-09-02 | 2022-09-02 | Crucible mold for preparing special-shaped crystal |
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| Publication Number | Publication Date |
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| CN218026447U true CN218026447U (en) | 2022-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222333170.4U Active CN218026447U (en) | 2022-09-02 | 2022-09-02 | Crucible mold for preparing special-shaped crystal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116907213A (en) * | 2023-07-21 | 2023-10-20 | 大连宏光锂业有限责任公司 | Novel energy-saving crucible with graphite paper |
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2022
- 2022-09-02 CN CN202222333170.4U patent/CN218026447U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116907213A (en) * | 2023-07-21 | 2023-10-20 | 大连宏光锂业有限责任公司 | Novel energy-saving crucible with graphite paper |
| CN116907213B (en) * | 2023-07-21 | 2024-02-09 | 大连宏光锂业有限责任公司 | Energy-saving crucible with graphite paper |
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