CN219347322U - Graphite heating system for hard felt sintering furnace - Google Patents
Graphite heating system for hard felt sintering furnace Download PDFInfo
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- CN219347322U CN219347322U CN202320217954.2U CN202320217954U CN219347322U CN 219347322 U CN219347322 U CN 219347322U CN 202320217954 U CN202320217954 U CN 202320217954U CN 219347322 U CN219347322 U CN 219347322U
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- Prior art keywords
- graphite
- sintering furnace
- hard felt
- heating system
- heat preservation
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- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 43
- 239000010439 graphite Substances 0.000 title claims abstract description 43
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 238000005245 sintering Methods 0.000 title claims abstract description 34
- 238000010438 heat treatment Methods 0.000 title claims abstract description 29
- 238000004321 preservation Methods 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims abstract description 19
- 239000007770 graphite material Substances 0.000 claims abstract description 7
- 239000010410 layer Substances 0.000 claims description 24
- CREMABGTGYGIQB-UHFFFAOYSA-N carbon carbon Chemical compound C.C CREMABGTGYGIQB-UHFFFAOYSA-N 0.000 claims description 14
- 239000011203 carbon fibre reinforced carbon Substances 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 10
- 239000011241 protective layer Substances 0.000 claims description 10
- 239000002131 composite material Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000000306 component Substances 0.000 description 5
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005087 graphitization Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Abstract
The utility model discloses a graphite heating system for a hard felt sintering furnace, which comprises a heat preservation component connected with a sintering furnace shell, wherein the middle part of the heat preservation component is a material area, a heater is arranged on the outer side of the material area and is fixed with the heat preservation component through a graphite electrode, a graphite material plate for placing the hard felt is arranged below the material area, and the lower part of the graphite material plate is fixed with the furnace bottom of the sintering furnace through a graphite support column; the thermal field has the advantages of high sintering purity, high sintering temperature, good temperature uniformity and long service life, realizes the autonomous sintering production of the hard felt through the graphite heating system, reduces the production cost and improves the hard felt production technology.
Description
Technical Field
The utility model relates to the technical field of hard felt treatment, in particular to a graphite heating system for a hard felt sintering furnace.
Background
The hard felt is a novel application form of carbon fiber felt, has the excellent performances of small heat conductivity, small specific heat, low linear expansion coefficient, high thermal stability and the like, is often used as a heat insulation material in a vacuum or inert atmosphere protection furnace, and has strong processability, certain shape and strength and convenient installation particularly after being molded. With the rapid development of carbon fiber materials in the industrial field, the hard felt is increasingly widely used in the solar and semiconductor industries.
The hard felt needs high-temperature graphitization sintering treatment, and is increasingly important as a core component of a high-temperature graphitization furnace, namely, research and development work of a graphite heating system. The existing hard felt has low sintering temperature uniformity and higher cost.
Disclosure of Invention
The utility model aims at the defects existing in the prior art, and provides the graphite heating system for the hard felt sintering furnace, which has the advantages of high sintering purity, high sintering temperature, good temperature uniformity and long service life.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a graphite heating system for hard felt fritting furnace, includes the heat preservation subassembly of being connected with the fritting furnace casing, and heat preservation subassembly's middle part is the material district, the heater has been arranged in the outside in material district, the heater passes through graphite electrode and heat preservation subassembly to be fixed, and the below in material district is equipped with the graphite flitch of placing hard felt, the below of graphite flitch is fixed with the stove bottom of fritting furnace through the graphite support column.
Preferably, the heat preservation assembly comprises a carbon-carbon protective layer, a hard felt heat preservation layer, a soft felt heat preservation layer and a metal heat preservation bracket which are fixed through carbon-carbon bolts from inside to outside.
Preferably, the joint of the heat preservation component adopts a step lap joint mode.
Preferably, the heater is a single-phase or three-phase heater consisting of a plurality of graphite heating pipes.
Preferably, the carbon-carbon protective layer is a carbon-carbon composite material plate with the thickness of 0.8-3 mm.
Preferably, one surface of the carbon-carbon protective layer facing the material area is compounded with flexible graphite paper.
Preferably, the hard felt heat insulation layer consists of a plurality of layers of hard felts with the thickness of 40-50 mm.
Preferably, the soft felt heat-insulating layer is formed by superposing a plurality of layers of 10mm soft felts, and the thickness of the soft felt heat-insulating layer is 100-200mm.
Preferably, the metal heat-insulating bracket is a hollow metal frame formed by welding heat-resistant stainless steel sections.
Preferably, the side wall of the heat preservation component is provided with an infrared temperature measuring port.
Compared with the prior art, the utility model has the beneficial effects that:
1. the graphite heating system has the advantages of high sintering purity, high sintering temperature, good temperature uniformity and long service life, realizes the autonomous sintering production of the hard felt, reduces the production cost and improves the hard felt production technology.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic diagram of a square stock area heater arrangement;
fig. 3 is a schematic view of a circular charge zone heater arrangement.
In the figure: 1-a metal heat-insulating bracket; 2-a soft felt heat-insulating layer; 3-a hard felt heat-insulating layer; 4-carbon bolts; a 5-carbon protective layer; 6-an infrared temperature measuring port; 7-graphite electrodes; 8-a heater; 9-material area; 10-graphite material plates; 11-graphite support columns.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1, a graphite heating system for a hard felt sintering furnace comprises a heat preservation component connected with a sintering furnace shell, wherein the heat preservation component comprises a carbon-carbon protective layer 5, a hard felt heat preservation layer 3, a soft felt heat preservation layer 2 and a metal heat preservation bracket 1 from inside to outside and is fixed through carbon-carbon bolts 4, and the metal heat preservation bracket 1 adopts a hollowed-out metal frame formed by welding heat-resistant stainless steel profiles. The steps are adopted for the joints of the heat preservation assembly to overlap, so that the joints are avoided, direct heat loss is reduced, and the heat preservation effect is improved.
The middle part of the heat preservation subassembly is the material district 9, and the outside of material district 9 has arranged heater 8, and heater 8 passes through graphite electrode 7 and heat preservation subassembly to be fixed, and single-phase or three-phase heater 8 is constituteed by a plurality of graphite heating pipes to heater 8, as shown in fig. 2-3, along circular or square material district 9 a week, evenly arranges to guarantee that the heating is even, and the hard felt temperature is even during the sintering.
An infrared temperature measuring port 6 is arranged on the side wall of the heat preservation component, and the temperature is monitored in real time through an infrared temperature measuring and detecting head.
The lower part of the material area 9 is provided with a graphite material plate 10 for placing hard felt, the lower part of the graphite material plate 10 is fixed with the bottom of the sintering furnace through a graphite support column 11, and the graphite support column 11 consists of 3-5 rows and 3-5 rows, preferably 9, 16 and 25.
The heater 8 is a single-phase or three-phase heater 8 composed of a plurality of graphite heating pipes. The single-phase heater 8 consists of 2 times of heating pipes, connecting plates, bolts and nuts, preferably 2, 3 or 4; the three-phase heater 8 consists of heating pipes, connecting plates, bolts and nuts which are multiples of 3; the diameter of the heating pipe is not less than 50mm.
The carbon-carbon protective layer 5 is a composite material plate with the thickness of 0.8-3mm, preferably 1 and 1.2mmC/C, and one surface of the carbon-carbon protective layer 5 is compounded with flexible graphite paper; the flexible graphite paper faces the material area 9, and as the smoothness of the graphite paper is high, the bright surface can effectively reflect the radiation heat of the heater 8 to the material area 9, so that the heating efficiency is improved; the graphite paper has large heat conductivity coefficient, and can quickly realize uniform temperature of the inner side of the heat preservation felt;
the hard felt heat preservation layer 3 is composed of a plurality of layers of 40-50mm hard felts, preferably 2 or 3 layers of 40-thickness hard felts;
the soft felt heat preservation layer 2 is formed by superposing a plurality of layers of 10mm soft felts, and the thickness of the soft felt layer is preferably 100-200mm.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. A graphite heating system for a hard felt sintering furnace is characterized in that: the sintering furnace comprises a heat preservation component connected with a sintering furnace shell, wherein the middle part of the heat preservation component is a material area, a heater is arranged on the outer side of the material area and is fixed with the heat preservation component through a graphite electrode, a graphite material plate for placing a hard felt is arranged below the material area, and the lower part of the graphite material plate is fixed with the furnace bottom of the sintering furnace through a graphite support column.
2. A graphite heating system for a hard felt sintering furnace according to claim 1, wherein: the heat preservation assembly comprises a carbon-carbon protective layer, a hard felt heat preservation layer, a soft felt heat preservation layer and a metal heat preservation bracket which are fixed through carbon-carbon bolts from inside to outside.
3. A graphite heating system for a hard felt sintering furnace according to claim 1, wherein: the joint of the heat preservation component adopts a step lap joint mode.
4. A graphite heating system for a hard felt sintering furnace according to claim 1, wherein: the heater is a single-phase or three-phase heater consisting of a plurality of graphite heating pipes.
5. A graphite heating system for a hard felt sintering furnace according to claim 2, wherein: the carbon-carbon protective layer is a carbon-carbon composite material plate with the thickness of 0.8-3 mm.
6. A graphite heating system for a hard felt sintering furnace according to claim 5, wherein: and one surface of the carbon-carbon protective layer facing the material area is compounded with flexible graphite paper.
7. A graphite heating system for a hard felt sintering furnace according to claim 2, wherein: the hard felt heat insulation layer consists of a plurality of layers of hard felts with the thickness of 40-50 mm.
8. A graphite heating system for a hard felt sintering furnace according to claim 2, wherein: the soft felt heat-insulating layer is formed by superposing a plurality of layers of 10mm soft felts, and the thickness of the soft felt heat-insulating layer is 100-200mm.
9. A graphite heating system for a hard felt sintering furnace according to claim 2, wherein: the metal heat-insulating support is a hollow metal frame formed by welding heat-resistant stainless steel sections.
10. A graphite heating system for a hard felt sintering furnace according to claim 1, wherein: an infrared temperature measuring port is arranged on the side wall of the heat preservation component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320217954.2U CN219347322U (en) | 2023-02-14 | 2023-02-14 | Graphite heating system for hard felt sintering furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320217954.2U CN219347322U (en) | 2023-02-14 | 2023-02-14 | Graphite heating system for hard felt sintering furnace |
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| Publication Number | Publication Date |
|---|---|
| CN219347322U true CN219347322U (en) | 2023-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320217954.2U Active CN219347322U (en) | 2023-02-14 | 2023-02-14 | Graphite heating system for hard felt sintering furnace |
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| CN (1) | CN219347322U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118602745A (en) * | 2024-08-08 | 2024-09-06 | 浙江晨华科技有限公司 | An energy-saving vacuum hot-pressing sintering furnace |
-
2023
- 2023-02-14 CN CN202320217954.2U patent/CN219347322U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118602745A (en) * | 2024-08-08 | 2024-09-06 | 浙江晨华科技有限公司 | An energy-saving vacuum hot-pressing sintering furnace |
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