CN203021700U - Ultra-high-temperature rectangular furnace for continuous graphitization - Google Patents
Ultra-high-temperature rectangular furnace for continuous graphitization Download PDFInfo
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- CN203021700U CN203021700U CN201220452590.8U CN201220452590U CN203021700U CN 203021700 U CN203021700 U CN 203021700U CN 201220452590 U CN201220452590 U CN 201220452590U CN 203021700 U CN203021700 U CN 203021700U
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- graphite
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- graphitization
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Abstract
The utility model discloses an ultra-high-temperature rectangular furnace for continuous graphitization. According to the ultra-high-temperature rectangular furnace, the heating temperature is 2,200-2,800 DEG C. The structure of the ultra-high-temperature rectangular furnace is as follows: a graphite muffle furnace hearth is divided into two portions, namely a temperature homogenizing zone and a heating zone, and heating devices are arranged on the upper and lower faces of the furnace hearth and are formed in a manner that graphite heating elements and graphite electrodes are in threaded connection. A heat preservation system formed by materials, such as hard graphite felt, soft felt and carbon-carbon composite, is formed in a furnace body, an outer layer of the heat preservation system is of a steel-structured furnace shell, and a detachable water cooling jacket is stuck to the outer face of the furnace shell. Voltage instability caused by the fact that the heating resistance and graphitization resistance become high due to the oxidization and cross-sectional surface ageing of the graphite heating elements is counteracted by using tapped transformers.
Description
Technical field
The invention belongs to superhigh temperature graphitization equipment technical field, be specially adapted to the graphitized carbon fibre production of high-performance, high-modulus and need to carry out the processed continuously various types of materials of graphitization.
Background technology
Graphitized carbon fibre refers to that phosphorus content is at the carbon fiber more than 99%.Carbon fiber is processed through 2200-2800 ℃ of high temperature graphitization just can obtain graphite fibre.Graphite fibre is compared with carbon fiber, and not only phosphorus content is high, and stretch modulus is high.Therefore.Graphite fibre also is called high modulus carbon fiber.In addition, graphite fibre also has the excellent properties such as the little and Heat stability is good of thermal coefficient of expansion, dimensionally stable, thereby is used for making firm and thin and composite element dimensionally stable, is widely used in space vehicle and field of aerospace.
In the graphite fibre production process, superhigh temperature equipment is extremely crucial.Carbide furnace is because to have operating temperature high, and is large to the performance impact of carbon fiber, and comprehensive technical level requires high, and becoming is key equipment in large-scale industrialization production line, is also the bottleneck of the development of restriction China carbon fiber industry.
The carbonization technique of carbon current fiber, carbon paper material is divided into low-temperature carbonization and high temperature cabonization substantially.1100 ℃ of left and right of low-temperature carbonization maximum temperature, the high temperature cabonization maximum temperature is at 1600-1800 ℃.In general, the high temperature furnace structure more than 1800 ℃ becomes superhigh temperature.China does not have relatively ripe continuous superhigh temperature equipment so far.
In carbon fiber production process, whether the Temperature Distribution of Muffle furnace is evenly one of the key factor that affects the carbonization quality of carbon fiber.The insulation material type is also the key factor that affects the carbide furnace performance.
Summary of the invention
The invention reside in and overcome present technical deficiency, and the superhigh temperature square furnace of continuous graphitization is provided, can satisfy the needs that existing graphitized carbon fibre is produced.
The problem to be solved in the present invention is to realize by following technical scheme:
Continuous graphitization superhigh temperature square furnace, its heating work temperature are 2200 ℃-2800 ℃, and furnace muffle is rectangle, effective work width 150-3000 millimeter, effectively working depth 50-300 millimeter; Adopt nitrogen or argon gas to burner hearth and import and export sealing, realizing continuous graphitization; Uniform temperature zone length is greater than 300MM.The structure of continuous graphitization superhigh temperature square furnace is the graphite muffle thorax, and burner hearth is that the graphite cake by 50-80mm divides three sections overlap joints to form; Burner hearth distributes equally warm area and two of thermals treatment zone part, and middle warm area is the thermal treatment zone, and the two ends warm area is heat preservation zone, and each warm area is separated as thermal insulative board by the hard felt of graphite; The burner hearth upper and lower faces all has heater, and heater is to be threaded by graphite heating component and graphite electrode to form.The interior heat-insulation system by jointly being formed by the hard felt of graphite, soft felt, carbon carbon composite of the body of heater of continuous graphitization superhigh temperature square furnace; The skin of heat-insulation system is the furnace shell of steel construction, and dismountable cold water jacket is housed outside furnace shell.The superhigh temperature square furnace is furnished with the transformer with tap, is used for offsetting the heating graphite element due to oxidation and the aging heating resistor that causes of transverse section surface becomes large and the graphite resistance becomes the variation that causes greatly voltage.The heater of superhigh temperature square furnace is comprised of by the screw thread stressed joint graphite heating rod and heating electrode; Graphite heating rod and heating electrode are that resistivity is at 20 Ω μ m or the graphite products more than 20 Ω μ m.
Beneficial effect of the present invention: compare with conventional art, this superhigh temperature square furnace stove can produce the superhigh temperature of 2200-2800 ℃; High insulating effect; Dismountable cold water jacket is arranged, convenient for maintaining; Use tapped transformer to make power stability.
Description of drawings
Fig. 1 is the structural representation of continuous graphitization superhigh temperature square furnace.
In figure, 1. heat-insulation system; 2. dismountable cold water plate; 3. heating element heater; 4. furnace shell; 5. graphite burner hearth; 6. band tapped transformer
The specific embodiment
The present invention is further described below in conjunction with accompanying drawing, but embodiments of the present invention are not limited to this.
Embodiment
A kind of high-temperature rectangular stove of producing graphite fibre of the present invention, as shown in Figure 1.During stove work, heating element heater (3) energising heating makes graphite furnace chamber (5) be warming up to 2200-2800 ℃.Carbonization treatment is carried out in even warm area and the thermal treatment zone of carbon fiber in graphite furnace chamber (5).Heat-insulation system (1) is positioned between heating element heater (3) and furnace shell (4), adopts the materials such as the thick hard felt of graphite of 400-600mm, soft felt, carbon carbon composite to form, and insulation material mostly is plate-like shape, and between plate and plate, overlap joint forms.Adjust heating graphite element (3) and become large due to the aging heating resistor that causes of the carrying out of oxidation and transverse section surface and the graphite resistance becomes large caused voltage change by controlling with the transformer (6) of tap, keep stablizing of heating voltage.Dismountable cooled plate (2) is carried out cooling to furnace shell (4), guarantee that furnace shell (4) surface temperature is unlikely and too high.Cooled plate (2) is attached to furnace shell (4) surface, avoided water-cooling sandwich directly being welded in the past body of heater inner and bring leak, keep in repair the problems such as inconvenient.
Claims (4)
1. continuous graphitization superhigh temperature square furnace is characterized by: the heating work temperature is 2200 ℃-2800 ℃, and furnace muffle is rectangle, effective work width 150-3000 millimeter, effectively working depth 50-300 millimeter; Adopt nitrogen or argon gas to burner hearth and import and export sealing, realizing continuous graphitization; Uniform temperature zone length is greater than 300MM.
2. continuous graphitization superhigh temperature square furnace according to claim 1, it is characterized by: structure is the graphite muffle thorax, burner hearth is that the graphite cake by 50-80mm divides three sections overlap joints to form; Burner hearth distributes equally warm area and two of thermals treatment zone part, and middle warm area is the thermal treatment zone, and the two ends warm area is heat preservation zone, and each warm area is separated as thermal insulative board by the hard felt of graphite; The burner hearth upper and lower faces all has heater, and heater is to be threaded by graphite heating component and graphite electrode to form.
3. continuous graphitization superhigh temperature square furnace according to claim 1, is characterized by: the interior heat-insulation system by jointly being comprised of the hard felt of graphite, soft felt, carbon carbon composite of body of heater; The skin of heat-insulation system is the furnace shell of steel construction, and dismountable cold water jacket is housed outside furnace shell.
3. continuous graphitization superhigh temperature square furnace according to claim 1, it is characterized by: be furnished with the transformer with tap, be used for offsetting the heating graphite element due to oxidation and the aging heating resistor that causes of transverse section surface becomes large and the graphite resistance becomes the variation that causes greatly voltage.
4. continuous graphitization superhigh temperature square furnace according to claim 1 is characterized by: heater is comprised of by the screw thread stressed joint graphite heating rod and heating electrode; Graphite heating rod and heating electrode are that resistivity is at 20 Ω μ m or the graphite products more than 20 Ω μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220452590.8U CN203021700U (en) | 2012-09-06 | 2012-09-06 | Ultra-high-temperature rectangular furnace for continuous graphitization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220452590.8U CN203021700U (en) | 2012-09-06 | 2012-09-06 | Ultra-high-temperature rectangular furnace for continuous graphitization |
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| CN203021700U true CN203021700U (en) | 2013-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201220452590.8U Expired - Lifetime CN203021700U (en) | 2012-09-06 | 2012-09-06 | Ultra-high-temperature rectangular furnace for continuous graphitization |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108101047A (en) * | 2018-02-07 | 2018-06-01 | 安徽欣尔特新材料科技有限公司 | A kind of multi-temperature zone continous way superhigh temperature graphitizing furnace |
-
2012
- 2012-09-06 CN CN201220452590.8U patent/CN203021700U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108101047A (en) * | 2018-02-07 | 2018-06-01 | 安徽欣尔特新材料科技有限公司 | A kind of multi-temperature zone continous way superhigh temperature graphitizing furnace |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 511356 2nd floor, No.5 Huafeng Road, Yonghe Economic Zone, Guangzhou Economic and Technological Development Zone, Guangdong Province Patentee after: Guangzhou sail Carbon Fiber Technology Co.,Ltd. Address before: 511356 2nd floor, No.5 Huafeng Road, Yonghe Economic Zone, Guangzhou Economic and Technological Development Zone, Guangdong Province Patentee before: ATA CARBON FIBER TECH. GUANGZHOU Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130626 |