CN114216344A - Equipment for preparing carbon-carbon composite material - Google Patents
Equipment for preparing carbon-carbon composite material Download PDFInfo
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- CN114216344A CN114216344A CN202111638853.4A CN202111638853A CN114216344A CN 114216344 A CN114216344 A CN 114216344A CN 202111638853 A CN202111638853 A CN 202111638853A CN 114216344 A CN114216344 A CN 114216344A
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- Prior art keywords
- furnace body
- carbon
- composite material
- heat insulation
- heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
- F27D11/08—Heating by electric discharge, e.g. arc discharge
- F27D11/10—Disposition of electrodes
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
- C04B35/522—Graphite
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/71—Ceramic products containing macroscopic reinforcing agents
- C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
- C04B35/80—Fibres, filaments, whiskers, platelets, or the like
- C04B35/83—Carbon fibres in a carbon matrix
Abstract
The invention discloses equipment for preparing a carbon-carbon composite material, which comprises an upper furnace body, a lower furnace body, a mounting platform and a lower furnace body lifting system, wherein the upper furnace body is arranged on the mounting platform, the lower furnace body lifting system is arranged below the mounting platform, the lower furnace body is arranged on the lower furnace body lifting system, an upper heat insulation cage is arranged in the upper furnace body, a copper electrode and a graphite electrode are arranged on the top wall in the upper furnace body, the graphite electrode extends into the upper heat insulation cage, an annular heater is arranged in the upper heat insulation cage, the annular heater is connected with the graphite electrode through an angle connector, a lower heat insulation cage is arranged in the lower furnace body, a supporting table is arranged at the bottom of the lower heat insulation cage, the upper furnace body and the lower furnace body are enclosed to form a furnace chamber, the upper heat insulation cage and the lower heat insulation cage are enclosed to form a heating chamber, the annular heater comprises a plurality of heating vertical plates, the heating vertical plates are arranged at intervals along the annular, and two adjacent heating vertical plates are detachably connected. The heater is arranged in a ring shape and can be detached, so that the heater is more suitable for producing C/C composite materials, the manufacturing difficulty of the heater is reduced, and the cost is reduced.
Description
Technical Field
The invention relates to production equipment of a C/C composite material, in particular to equipment for preparing a carbon-carbon composite material.
Background
The high-temperature graphitization furnace is a key device for manufacturing the C/C composite material. In the C/C composite material prepared by chemical vapor deposition, the basic structure of each component is a disordered layer structure or a transition type between the disordered layer structure and a graphite crystal structure, so that the C/C composite material needs to be subjected to high-temperature heat treatment in the subsequent preparation production process, the disordered layer structure is converted into the graphite crystal structure, and the use strength and the performance of the C/C composite material are improved, wherein the high-temperature heat treatment process is also called as a high-temperature graphitization process for the C/C composite material. The C/C composite material high-temperature graphitization furnace in the current market is special equipment, and the equipment cost is high.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide equipment for preparing a carbon-carbon composite material, which reduces the manufacturing difficulty and cost of a heater.
In order to solve the technical problems, the invention adopts the following technical scheme:
an apparatus for preparing carbon-carbon composite material comprises an upper furnace body, a lower furnace body, a mounting platform and a lower furnace body lifting system, wherein the upper furnace body is arranged on the mounting platform, the lower furnace body lifting system is arranged below the mounting platform, the lower furnace body is arranged on the lower furnace body lifting system, an upper heat insulation cage is arranged in the upper furnace body, a copper electrode and a graphite electrode arranged at the lower end of the copper electrode are arranged on the top wall in the upper furnace body, the graphite electrode extends into the upper heat insulation cage, a ring-shaped heater is arranged in the upper heat insulation cage, the ring-shaped heater is connected with the graphite electrode through an angle connector, a lower heat insulation cage is arranged in the lower furnace body, a support platform is arranged at the bottom of the lower heat insulation cage, a graphite upright column is arranged on the bottom wall in the lower furnace body, the graphite upright column extends into the lower heat insulation cage, the lower heat insulation cage and the support platform are supported by the graphite upright column, and the upper furnace body and the lower furnace body are enclosed into a furnace chamber, go up thermal-insulated cage and enclose into the heating chamber with lower thermal-insulated cage, annular heater includes a plurality of heating risers, and each heating riser is arranged along annular interval, and two adjacent heating risers detachable connect.
As a further improvement of the technical scheme, two adjacent heating vertical plates are connected through a connecting transverse plate.
As a further improvement of the technical scheme, the heating vertical plates and the connecting transverse plates are arranged in an S shape along the annular direction.
As a further improvement of the technical scheme, the upper end of a single heating vertical plate is connected with the previous connecting transverse plate, and the lower end of the single heating vertical plate is connected with the next connecting transverse plate.
As a further improvement of the technical scheme, the heating vertical plates are connected with the connecting transverse plates through bolts.
As a further improvement of the technical scheme, the vertical length of the annular heater is L1, the vertical depth of the heating cavity is L2, and L1 is more than 0.5L 2.
As a further improvement of the technical scheme, the annular heater is provided with six corner connectors which are respectively connected with six graphite electrodes below the top wall in the upper furnace body.
As a further improvement of the technical scheme, the upper heat insulation cage is connected with the top wall in the upper furnace body, the bottom wall in the lower furnace body is provided with a graphite upright post, and the lower heat insulation cage is supported by the graphite upright post.
As a further improvement of the technical scheme, the lower furnace body lifting system comprises at least two groups of lifting screw assemblies, each lifting screw assembly comprises a lifting screw, a mounting seat and a motor, the lifting screws are rotatably arranged on the mounting seats, the lower furnace body is connected with nuts of the lifting screws, and the motors are used for driving the lifting screws to rotate.
As a further improvement of the technical scheme, the furnace further comprises an exhaust system, and the bottom of the lower furnace body is provided with an air inlet. Compared with the prior art, the invention has the advantages that:
according to the equipment for preparing the carbon-carbon composite material, the outline of the C/C composite material product is mostly annular, so that the heater is arranged to be annular, and the furnace body is more suitable for producing the C/C composite material; because the high height of feeding of CCC combined material goods, consequently, require heating riser's vertical length big, in addition, the annular design, if adopt a hot plate around city annular, the preparation degree of difficulty of ring heater has been increased, and the hot plate of such a big length also is difficult to make this application, for this reason, this embodiment is cut apart into by a plurality of heating risers with ring heater, be detachable connection between each heating riser, ring heater can be formed by the heating riser concatenation of a plurality of segments like this, the preparation degree of difficulty of heater has been reduced, and even a heating riser damages or unusual, also need not change whole heater, and the cost is reduced.
Drawings
Fig. 1 is a front view of an apparatus for manufacturing a carbon-carbon composite material according to the present invention.
Fig. 2 is a side view of an apparatus for preparing a carbon-carbon composite material according to the present invention.
FIG. 3 is a schematic view of the upper and lower furnace bodies of the present invention.
FIG. 4 is a schematic view showing a state where an upper furnace body is separated from a lower furnace body in the present invention.
FIG. 5 is a schematic view of the upper and lower thermal insulation cages and their internal structures of the present invention.
Fig. 6 is a top view of fig. 5.
Fig. 7 is a front view of the ring heater of the present invention.
FIG. 8 is a top view of the ring heater of the present invention.
The reference numerals in the figures denote:
1. an upper furnace body; 11. an air inlet; 2. a lower furnace body; 21. a support table; 22. a graphite upright post; 3. mounting a platform; 4. a lower furnace body lifting system; 41. lifting a screw rod; 42. a mounting seat; 51. an upper heat insulation cage; 52. a lower heat insulation cage; 61. a copper electrode; 62. a corner connector; 63. a graphite electrode; 7. a ring heater; 71. heating the vertical plate; 72. connecting the transverse plates; 73. a bolt; 8. an exhaust system; 9. C/C composite articles.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples of the specification.
As shown in fig. 1 to 8, the apparatus for preparing a carbon-carbon composite material according to the present embodiment includes an upper furnace body 1, a lower furnace body 2, a mounting platform 3 and a lower furnace body lifting system 4, the upper furnace body 1 is disposed on the mounting platform 3, the lower furnace body lifting system 4 is disposed below the mounting platform 3, the lower furnace body 2 is disposed on the lower furnace body lifting system 4, an upper heat insulation cage 51 is disposed in the upper furnace body 1, a copper electrode 61 is disposed on an inner top wall of the upper furnace body 1, a graphite electrode 63 is sleeved on a lower end of the copper electrode 61, the graphite electrode 63 extends into the upper heat insulation cage 51, a ring heater 7 is disposed in the upper heat insulation cage 51, the ring heater 7 is connected to the graphite electrode 63 through an angle connector 62, a lower heat insulation cage 52 is disposed in the lower furnace body 2, a support platform 21 is disposed at a bottom of the lower heat insulation cage 52, a graphite upright column 22 is disposed on an inner bottom wall of the lower furnace body 2, the graphite upright 22 extends into the lower heat insulation cage 2, the lower heat insulation cage 52 and the support platform 21 are both supported by the graphite upright 22, go up furnace body 1 and lower furnace body 2 and enclose into the furnace chamber, go up thermal-insulated cage 51 and enclose into the heating chamber with lower thermal-insulated cage 52, annular heater 7 includes a plurality of heating risers 71, and each heating riser 71 is arranged along annular interval, and two adjacent heating risers 71 detachable connect.
The furnace body of the equipment is divided into an upper furnace body 1 and a lower furnace body 2, C/C composite material products 9 can be conveniently entered, when feeding is carried out, the lower furnace body lifting system 4 drives the lower furnace body 2 to descend to be separated from the upper furnace body 1, the C/C composite material products 9 are placed on a supporting table 21 of the lower furnace body 2, then the lower furnace body lifting system 4 drives the lower furnace body 2 to ascend to be combined with the upper furnace body 1, vacuum pumping is carried out, heating is carried out through an annular heater 7 to 1900 ℃, the time of a heat treatment process is 5 hours, furnace shutdown and cooling are finally completed, and the high-temperature graphitization treatment of the C/C products is finally completed, and the high-temperature graphitization treatment can be used in the preparation process of products such as C/C crucibles, guide cylinders, heat preservation cylinders and the like for straight pulling single crystals.
Since the contour of the C/C composite product 9 is annular, the heater is arranged in an annular shape for this purpose, making the apparatus more suitable for the production of C/C composite materials. Because the height of feeding of C/C combined material goods 9 is big, consequently, require the vertical length of heating riser 71 big, in addition, the annular design, if adopt a hot plate around city annular, the preparation degree of difficulty of ring heater has been increased, and the heating plate of such a big length also is difficult to make this application, for this reason, this embodiment is cut apart ring heater 7 into by a plurality of heating risers 71, be detachable connection between each heating riser 71, ring heater 7 can be formed by the concatenation of the heating riser 71 of a plurality of segments like this, the preparation degree of difficulty of heater has been reduced, even a heating riser 71 damages or unusual, need not change whole heater yet, and the cost is reduced.
In this embodiment, the vertical length of the ring heater 7 is L1, the vertical depth of the heating cavity (the cavity surrounded by the upper thermal insulation cage 51 and the lower thermal insulation cage 52) is L2, and L1 is greater than 0.5L 2. It is because of the large loading height of the C/C composite product 9 that the vertical length of the ring heater 7 is required to be large. In order to reasonably utilize the space between the upper and lower heat insulation cages and prevent the depth of the heat insulation cages from being too large, the support platform 21 is arranged close to the bottom of the heat insulation cages, the occupied height of the support platform 21 is reduced, and therefore the depth of the heat insulation cages is utilized to the maximum.
In this embodiment, two adjacent heating risers 71 are connected by a connecting cross plate 72. The upper end of a single heating vertical plate 71 is connected with the previous connecting transverse plate 72, and the lower end is connected with the next connecting transverse plate 72. The heating risers 71 and the connecting cross plates 72 are arranged in an S-shape in the circumferential direction. The heating vertical plate 71 and the connecting transverse plate 72 are connected by bolts 73.
In this embodiment, the ring heater 7 is provided with six corner connectors 62, which are respectively connected to six graphite electrodes 63 below the inner top wall of the upper furnace body 1, as shown in fig. 6.
In this embodiment, the upper heat insulating cage 51 is connected to the top wall of the upper furnace body 1, the graphite pillars 22 are provided on the bottom wall of the lower furnace body 2, and the lower heat insulating cage 52 is supported by the graphite pillars 22.
In this embodiment, the lower furnace body lifting system 4 includes three sets of lifting screw assemblies, each lifting screw assembly includes a lifting screw 41, a mounting base 42 and a motor (not shown in the figure), the lifting screw 41 is rotatably disposed on the mounting base 42, the lower furnace body 2 is connected to a nut of the lifting screw 41, and the motor is used for driving the lifting screw 41 to rotate. It should be noted that, besides the present embodiment, the number of the groups of the lifting screw assemblies may also be two or more than three.
In this embodiment, the apparatus for preparing carbon-carbon composite material further includes an exhaust system 8, and the bottom of the lower furnace body 1 is provided with an air inlet 11.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (10)
1. An apparatus for preparing carbon-carbon composite material, characterized in that: comprises an upper furnace body (1), a lower furnace body (2), a mounting platform (3) and a lower furnace body lifting system (4), wherein the upper furnace body (1) is arranged on the mounting platform (3), the lower furnace body lifting system (4) is arranged below the mounting platform (3), the lower furnace body (2) is arranged on the lower furnace body lifting system (4), an upper heat insulation cage (51) is arranged in the upper furnace body (1), a copper electrode (61) and a graphite electrode (63) arranged at the lower end of the copper electrode (61) are arranged on the inner top wall of the upper furnace body (1), the graphite electrode (63) extends into the upper heat insulation cage (51), an annular heater (7) is arranged in the upper heat insulation cage (51), the annular heater (7) is connected with the graphite electrode (63) through an angle connector (62), a lower heat insulation cage (52) is arranged in the lower furnace body (2), a support table (21) is arranged at the bottom of the lower heat insulation cage (2), the utility model discloses a furnace body, including furnace body (2) down, graphite stand (22) stretch into in the thermal-insulated cage (2) down, thermal-insulated cage (52) support by graphite stand (22) with brace table (21) down, go up furnace body (1) and enclose into the furnace chamber with furnace body (2) down, go up thermal-insulated cage (51) and enclose into the heating chamber with thermal-insulated cage (52) down, ring heater (7) include a plurality of heating riser (71), and each heating riser (71) are arranged along annular interval, and two adjacent heating riser (71) detachable are connected.
2. The apparatus for preparing a carbon-carbon composite material according to claim 1, wherein: two adjacent heating vertical plates (71) are connected through a connecting transverse plate (72).
3. The apparatus for preparing a carbon-carbon composite material according to claim 2, wherein: the heating vertical plates (71) and the connecting transverse plates (72) are arranged in an S shape along the annular direction.
4. The apparatus for preparing a carbon-carbon composite material according to claim 3, wherein: the upper end of a single heating vertical plate (71) is connected with the previous connecting transverse plate (72), and the lower end is connected with the next connecting transverse plate (72).
5. The apparatus for preparing a carbon-carbon composite material according to claim 2, wherein: the heating vertical plate (71) is connected with the connecting transverse plate (72) through a bolt (73).
6. The apparatus for manufacturing a carbon-carbon composite material according to any one of claims 1 to 5, wherein: the vertical length of the annular heater (7) is L1, the vertical depth of the heating cavity is L2, and L1 is more than 0.5L 2.
7. The apparatus for manufacturing a carbon-carbon composite material according to any one of claims 1 to 5, wherein: the annular heater (7) is provided with six corner connectors (62) which are respectively connected with six graphite electrodes (63) below the inner top wall of the upper furnace body (1).
8. The apparatus for manufacturing a carbon-carbon composite material according to any one of claims 1 to 5, wherein: the upper heat insulation cage (51) is connected with the top wall in the upper furnace body (1).
9. The apparatus for manufacturing a carbon-carbon composite material according to any one of claims 1 to 5, wherein: furnace body operating system (4) includes at least two sets of lifting screw subassembly down, lifting screw subassembly includes lifting screw (41), mount pad (42) and motor, lifting screw (41) rotatable locate on mount pad (42), furnace body (2) are connected with lifting screw's (41) nut down, the motor is used for driving lifting screw (41) rotatory.
10. The apparatus for manufacturing a carbon-carbon composite material according to any one of claims 1 to 5, wherein: the furnace body is characterized by further comprising an exhaust system (8), wherein an air inlet (11) is formed in the bottom of the lower furnace body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111638853.4A CN114216344A (en) | 2021-12-29 | 2021-12-29 | Equipment for preparing carbon-carbon composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111638853.4A CN114216344A (en) | 2021-12-29 | 2021-12-29 | Equipment for preparing carbon-carbon composite material |
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| Publication Number | Publication Date |
|---|---|
| CN114216344A true CN114216344A (en) | 2022-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111638853.4A Pending CN114216344A (en) | 2021-12-29 | 2021-12-29 | Equipment for preparing carbon-carbon composite material |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06211591A (en) * | 1993-01-05 | 1994-08-02 | Nippon Steel Corp | Method for producing single crystalline body and apparatus therefor |
| JP2001006853A (en) * | 1999-06-23 | 2001-01-12 | Sukegawa Electric Co Ltd | Disc-like heater for vertical type heating furnace |
| CN101109602A (en) * | 2007-08-23 | 2008-01-23 | 浙江精工科技股份有限公司 | Thermal field structure of polysilicon ingot furnace |
| CN202881446U (en) * | 2012-07-16 | 2013-04-17 | 深圳市石金科技有限公司 | Thermal field structure for large-capacity polycrystalline silicon ingot furnace |
| CN207262934U (en) * | 2017-09-12 | 2018-04-20 | 北京有色金属研究总院 | A kind of ultrahigh vacuum heat-treatment furnace |
-
2021
- 2021-12-29 CN CN202111638853.4A patent/CN114216344A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06211591A (en) * | 1993-01-05 | 1994-08-02 | Nippon Steel Corp | Method for producing single crystalline body and apparatus therefor |
| JP2001006853A (en) * | 1999-06-23 | 2001-01-12 | Sukegawa Electric Co Ltd | Disc-like heater for vertical type heating furnace |
| CN101109602A (en) * | 2007-08-23 | 2008-01-23 | 浙江精工科技股份有限公司 | Thermal field structure of polysilicon ingot furnace |
| CN202881446U (en) * | 2012-07-16 | 2013-04-17 | 深圳市石金科技有限公司 | Thermal field structure for large-capacity polycrystalline silicon ingot furnace |
| CN207262934U (en) * | 2017-09-12 | 2018-04-20 | 北京有色金属研究总院 | A kind of ultrahigh vacuum heat-treatment furnace |
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