High-temperature sealed graphite crucible
By setting graphite threaded fasteners on the side wall of the graphite crucible, the problem of tightly fixing multiple heated samples at high temperatures was solved, achieving tight adhesion and fixation of samples at high temperatures, which is suitable for high-temperature heating environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-03-24
AI Technical Summary
How to fix multiple heated samples together during high-temperature heating to ensure they fit tightly and avoid cracking or separating at high temperatures?
Graphite threaded fasteners are provided on the side wall of the graphite crucible body. The graphite screw and nut provide lateral force, so that the heated sample is attached and fixed in the lateral direction. The graphite top cover and the graphite crucible body can be sealed together.
At high temperatures, the contact surfaces of multiple samples remain in contact to ensure the smooth progress of the reaction. The graphite material can withstand temperatures of 2000℃ and the application of external force to achieve tight fixation of the samples.
Smart Images
Figure CN224034356U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of high-temperature heating technology, and in particular relates to a high-temperature sealed graphite crucible. Background Technology
[0002] High-temperature graphite crucibles are core high-temperature resistant containers used in metallurgy, semiconductors, glass manufacturing, and other fields. They are not easily broken under rapid temperature changes and maintain good strength at high temperatures.
[0003] High-temperature industrial equipment (such as hot zone components of polycrystalline silicon ingot furnaces) or military fields (composite armor), such as the development of divertor components in nuclear fusion devices, utilize the plasma erosion resistance of tungsten and the thermal conductivity of graphite. The basic materials of these products are usually high-temperature resistant materials such as graphite and tungsten, or graphite and silicon. They are fused together at high temperature at the contact surface through atomic diffusion to generate WC or Si contact surfaces.
[0004] However, since the above products need to be heated at ultra-high temperatures (temperatures exceeding 1000℃), high-temperature stone crucibles can be used for heating. How to fix multiple heated samples together during the heating process has become an urgent problem to be solved. Utility Model Content
[0005] The technical problem to be solved by this utility model is to overcome the deficiencies and defects mentioned in the background art above, and to provide a high-temperature sealed graphite crucible that can provide external force to multiple heated samples during high-temperature heating so that the multiple samples can fit together tightly.
[0006] To solve the above-mentioned technical problems, the technical solution proposed by this utility model is: a high-temperature sealed graphite crucible, comprising:
[0007] A graphite crucible body; the side wall of the graphite crucible body is provided with graphite threaded fasteners, which are used to provide a lateral force in the lateral direction for at least two heated samples placed inside the graphite crucible body so that they are attached and fixed together.
[0008] A graphite top cover, which is sealably connected to the graphite crucible body.
[0009] In one embodiment, the graphite threaded fastener includes a graphite screw and a graphite nut. The side wall of the graphite crucible body has a threaded hole that matches the graphite screw. The graphite screw passes through the threaded hole, and one end of the graphite screw located inside the graphite crucible body abuts against the heated sample to provide a lateral force. The graphite screw can adjust its extension range in the lateral direction by rotation.
[0010] In one embodiment, the graphite threaded fastener further includes two graphite gaskets sleeved on the graphite screw, with the two graphite gaskets respectively attached to the inner and outer sidewalls of the graphite crucible body.
[0011] In one embodiment, there are two graphite threaded fasteners, which are symmetrically arranged on the graphite crucible body to provide relative lateral force for heating the sample.
[0012] In one embodiment, the graphite top cover includes a cap portion and a threaded portion disposed at the bottom of the cap portion, the threaded portion being connected to the internal threads of the graphite crucible body.
[0013] In one embodiment, the cross-sections of both the outer and inner walls of the graphite crucible body are regular hexagons.
[0014] In one embodiment, the at least two heated samples comprise at least one graphite block and one tungsten block, or
[0015] It includes at least one graphite block and one silicon block.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: In the above-mentioned high-temperature sealed graphite crucible, graphite threaded fasteners are provided on the side wall of the graphite crucible body. When heating at least two samples, a certain lateral force is applied to the samples inside the crucible through the graphite threaded fasteners, so that at least two samples inside the graphite crucible can stick together and be fixed. Under the high-temperature heating environment, the contact surfaces of at least two samples stick together, so that the contact surfaces of at least two samples always remain in contact, which is conducive to the reaction of the contact surfaces at high temperature. All components of the high-temperature sealed graphite crucible are made of graphite material, which can withstand a high temperature of 2000℃ and still apply external force to the samples at this high temperature. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Fig. 1 This is a schematic diagram of the structure of a high-temperature sealed graphite crucible according to one embodiment;
[0019] Fig. 2 This is a schematic diagram of the cross-sectional structure of the graphite crucible body of a high-temperature sealed graphite crucible according to one embodiment.
[0020] Reference numerals: 100: High-temperature sealed graphite crucible; 10: Graphite crucible body; 20: Graphite top cover; 22: Cap part; 24: Threaded part; 30: Graphite threaded fastener; 32: Graphite screw; 34: Graphite nut; 36: Graphite gasket; 200: Sample. DETAILED DESCRIPTION
[0021] In order to make the above and other features and advantages of the present application more apparent, the present application will be further described below with reference to the drawings. It should be understood that the specific embodiments given herein are for illustrative purposes only and are not intended to be limiting.
[0022] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0023] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.
[0024] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication or interaction relationship of two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0025] In the present application, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.
[0026] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.
[0027] Please refer to Figs. 1-2 A high-temperature sealing graphite crucible 100 in an embodiment includes a graphite crucible body 10, a graphite top cover 20 and a graphite threaded fastener 30. Specifically, the side wall of the graphite crucible body 10 is provided with a graphite threaded fastener 30, which is used to provide a lateral force to at least two heating samples 200 placed in the graphite crucible body 10 in the lateral direction and fix them; the graphite top cover 20 is sealingly connected with the graphite crucible body 10. Specifically, the at least two heating samples 200 include at least one graphite block and one tungsten block, or include at least one graphite block and one silicon block. In a specific embodiment, a C-W-C structure, a WC structure, a SiC structure, a CSiC structure can be formed, and of course the material of the heating sample is not limited to this, and the high-temperature sealing graphite crucible 100 of the present application is suitable for heating of other similar materials.
[0028] Preferably, in an embodiment, the cross sections of the outer wall and the inner wall of the graphite crucible body 10 are regular hexagons, which are stable in structure, and the graphite threaded fastener 30 is arranged on one of the faces, which is beneficial to the sealing effect of the graphite threaded fastener 30. The side wall of the graphite crucible body 10 is provided with a threaded hole matched with the graphite screw 32, and preferably the threaded hole is arranged at the middle position in the height direction.
[0029] Preferably, in an embodiment, the graphite threaded fastener 30 includes a graphite screw 32 and a graphite nut 34, the graphite screw 32 passes through the threaded hole, and one end of the graphite screw 32 located inside the graphite crucible body 10 abuts on the heating sample 200 to provide a lateral force to the heating sample 200, and the graphite screw 32 adjusts the extension range in the lateral direction by rotation to achieve the effect of exerting different lateral forces on the sample 200. Preferably, the graphite threaded fastener 30 is two, and is symmetrically arranged on the graphite crucible body 10 to jointly provide opposite lateral forces to the heating sample 200.
[0030] Further, the graphite threaded fastener 30 further comprises two graphite gaskets 36 sleeved on the graphite screw rod 32, and the two graphite gaskets 36 are respectively attached to the inner side wall and the outer side wall of the graphite crucible body 10, and play a role of auxiliary sealing and fixing the graphite screw rod 32.
[0031] In an embodiment, the graphite top cover 20 comprises a cap portion 22 and a threaded portion 24 arranged at the bottom of the cap portion 22, and the threaded portion 24 is threadedly connected with the graphite crucible body 10. The cap portion 22 is a regular hexagonal structure, and the threaded portion 24 is a cylindrical structure, which facilitates the tightening of the graphite top cover 20 on the graphite crucible body 10.
[0032] In the high-temperature sealed graphite crucible 100, graphite threaded fasteners 30 are arranged at the side wall of the graphite crucible body 10, and the graphite threaded fasteners 30 are two and symmetrically arranged at the side wall of the graphite crucible body 10. The graphite screw rod 32 is adjusted in the transverse direction by rotation to adjust the extension range, so as to exert different transverse forces on the sample 200. When two or more samples 200 are heated, the graphite threaded fastener 30 is used to exert a certain transverse force on the sample 200 in the crucible, and the contact surfaces of at least two samples are attached to each other in a high-temperature heating environment, so that the multiple samples 200 can be heat-treated under high-temperature and high-pressure conditions, and the contact surfaces of the at least two samples 200 are always attached, which is beneficial to the reaction of the contact surfaces at high temperature. All components of the high-temperature sealed graphite crucible 100 are made of graphite material, which can withstand a high temperature of 2000℃, and can still exert an external force on the sample 200 at the high temperature.
[0033] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and modify the above-mentioned embodiments within the scope of the utility model.
Claims
1. A high temperature sealed graphite crucible, characterized by, The graphite crucible body is provided with graphite threaded fasteners on the side wall thereof, the graphite threaded fasteners being used to provide lateral force in the lateral direction for at least two heating samples placed in the graphite crucible body to adhere to and fix each other; The graphite top cover is sealably connected with the graphite crucible body. The graphite threaded fasteners comprise graphite screws and graphite nuts, the side wall of the graphite crucible body is provided with threaded holes matched with the graphite screws, the graphite screws pass through the threaded holes, and the end of the graphite screws inside the graphite crucible body abuts on the heating samples to provide lateral force, and the graphite screws are adjusted in the lateral direction by rotation to adjust the telescopic range.
2. The high temperature sealed graphite crucible of claim 1, wherein, The graphite threaded fasteners further comprise two graphite gaskets sleeved on the graphite screws, and the two graphite gaskets are respectively adhered to the inner side wall and the outer side wall of the graphite crucible body.
3. The high temperature, sealed graphite crucible of claim 2, wherein, The graphite threaded fasteners are two and symmetrically arranged on the graphite crucible body to jointly provide opposite lateral force for the heating samples.
4. The high temperature, sealed graphite crucible of claim 3, wherein, The graphite top cover comprises a cap part and a threaded part arranged at the bottom of the cap part, and the threaded part is internally threadedly connected with the graphite crucible body.
5. The high temperature, sealed graphite crucible of claim 1, wherein, The cross sections of the outer wall and the inner wall of the graphite crucible body are regular hexagons.
6. The high temperature, sealed graphite crucible of claim 1, wherein, The at least two heating samples comprise at least one graphite block and one tungsten block, or 7. The high temperature, sealed graphite crucible of claim 1, wherein, The at least two heating samples comprise at least one graphite block and one silicon block.