CN204400843U - High temperature furnace used electrode - Google Patents
High temperature furnace used electrode Download PDFInfo
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- CN204400843U CN204400843U CN201420861982.9U CN201420861982U CN204400843U CN 204400843 U CN204400843 U CN 204400843U CN 201420861982 U CN201420861982 U CN 201420861982U CN 204400843 U CN204400843 U CN 204400843U
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Abstract
The utility model discloses a kind of high temperature furnace used electrode adopting carbon/carbon compound material to prepare, it comprises electrode body, it is characterized in that described electrode body is the carbon/carbon compound material that carbon fiber is made through precast body preparation, density, machining, top coat step; Described electrode body is followed successively by coating, tight zone and low-density layer from surface to core, and the density of described tight zone is 1.1g/cm
3~ 2.24g/cm
3, the density of low-density layer is 0.3g/cm
3~ 1.1g/cm
3; Electrode bending intensity prepared by the utility model is greater than 80MPa, thermal conductivity≤10W/m.K, and intensity is about 2 times of graphite, thermal conductivity is only 1/10 of graphite, achieve effective combination of high strength and low heat conductivity energy, increased substantially electrode life, achieved energy-conservation simultaneously.
Description
Technical field
The utility model relates to a kind of high temperature furnace used frock, specifically a kind of high temperature furnace used electrode, particularly relates to a kind of high temperature furnace used electrode adopting carbon/carbon compound material to prepare.
Background technology
In High Temperature Furnaces Heating Apparatus, electrode is a kind of parts for connection metal electrode and well heater, and its Main Function one is stable fixed heater; Two is carry electric current by it to well heater.Therefore require that electrode has certain intensity, durable.Meanwhile, electroconductibility own will be got well, smooth, steady with the contact surface of metal electrode and well heater, ensures that contact is good, does not strike sparks during energising.
Graphite is all very excellent carbon materials of a kind of heat conduction, conductivity, is widely used in high-temperature furnace thermal field system.At present, high temperature furnace used electrode generally adopts high purity graphite to process.But because graphite intensity is lower, fragility is large, for the manufacture of there are two defects during electrode: one is that connecting portion easily damages, and work-ing life is short; Two is that graphite heat conducting performance is fine, generally can to more than 100W/m.K, and because electrode is the parts of the metal electrode connecting well heater and band water-cooled end, good thermal conductivity causes calorific loss very large.
Summary of the invention
The purpose of this utility model is to provide a kind of high temperature furnace used electrode adopting carbon/carbon compound material to prepare.
The utility model adopts following technical scheme to realize its goal of the invention, a kind of high temperature furnace used electrode, and it comprises electrode body, and described electrode body is the carbon/carbon compound material that carbon fiber is made through precast body preparation, density, machining, top coat step; Described electrode body is followed successively by coating, tight zone and low-density layer from surface to core, and the density of described tight zone is 1.1g/cm
3~ 2.24g/cm
3, the density of low-density layer is 0.3g/cm
3~ 1.1g/cm
3.
The thickness ratio of tight zone described in the utility model and low-density layer is 0.3 ~ 1.
Coating described in the utility model is the pyrocarbon coating adopting chemical Vapor deposition process to prepare to electrode body, and its thickness is 1 μm ~ 1000 μm.
Owing to adopting technique scheme, the utility model achieves goal of the invention preferably, its electrode bending intensity prepared is greater than 80MPa, thermal conductivity≤10W/m.K, intensity is about 2 times of graphite, and thermal conductivity is only 1/10 of graphite, achieves effective combination of high strength and low heat conductivity energy, increase substantially electrode life, achieved energy-conservation simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the A place enlarged diagram in Fig. 1.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As seen from Figure 1, Figure 2, a kind of high temperature furnace used electrode, it comprises electrode body 3, and described electrode body 3 is the carbon/carbon compound material that carbon fiber is made through precast body preparation, density, machining, top coat step; Described electrode body 3 is followed successively by coating 5, tight zone 6 and low-density layer 7 from surface to core, and the density of described tight zone 6 is 1.1g/cm
3~ 2.24g/cm
3, the present embodiment is 1.3g/cm
3, the density of low-density layer 7 is 0.3g/cm
3~ 1.1g/cm
3, the present embodiment is 0.85g/cm
3.
Tight zone 6 described in the utility model is 0.3 ~ 1 with the thickness ratio of low-density layer 7.The present embodiment is 0.9.
Coating 5 described in the utility model is the pyrocarbon coating adopting chemical Vapor deposition process to prepare to electrode body 3, and its thickness is 1 μm ~ 1000 μm.The present embodiment is 500 μm.
The utility model is when preparing electrode body 3, in order to reduce the thermal conductivity of material as much as possible, form outer close interior thin structure, adopt the depositing operation of high temperature Rapid densification, its processing condition are: depositing temperature 1150 DEG C ~ 1300 DEG C, carbon-source gas flow is 1L/min ~ 200 L/min, and the pressure of reactant gases is 0.5kPa ~ 12kPa, and the chemical vapor infiltration time is 1h ~ 600h.Deposited by high temperature Rapid densification, the density of material surface is improved rapidly, causes material surface sealing of hole, thus it is lower to realize material core density, form outer close interior thin structure.Tight zone 6 can ensure the processing of electrode thread; Low-density layer 7 mainly plays heat-blocking action; The object of coating 5 prevents aggressive atmosphere to the corrosion of electrode.The global density of the electrode body 3 of final preparation is 1.12g/cm
3, flexural strength 85MPa, thermal conductivity 3.72W/m.K, achieve effective combination of high strength and low heat conductivity energy, increased substantially electrode life, achieved energy-conservation simultaneously.
Electrode body 3 one end is connected with metal electrode 4, and the other end is connected with heating element 1 by heating element pin 2.During work, foreign current imports thermal field inside by metal electrode 4, is converted into heat by heating element 1, for whole thermal field provides energy derive.
Claims (3)
1. a high temperature furnace used electrode, it comprises electrode body, it is characterized in that described electrode body is the carbon/carbon compound material that carbon fiber is made through precast body preparation, density, machining, top coat step; Described electrode body is followed successively by coating, tight zone and low-density layer from surface to core, and the density of described tight zone is 1.1g/cm
3~ 2.24g/cm
3, the density of low-density layer is 0.3g/cm
3~ 1.1g/cm
3.
2. high temperature furnace used electrode according to claim 1, is characterized in that the thickness ratio of described tight zone and low-density layer is 0.3 ~ 1.
3. high temperature furnace used electrode according to claim 1, it is characterized in that described coating is the pyrocarbon coating adopting chemical Vapor deposition process to prepare to electrode body, its thickness is 1 μm ~ 1000 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420861982.9U CN204400843U (en) | 2014-12-31 | 2014-12-31 | High temperature furnace used electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420861982.9U CN204400843U (en) | 2014-12-31 | 2014-12-31 | High temperature furnace used electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204400843U true CN204400843U (en) | 2015-06-17 |
Family
ID=53424722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420861982.9U Active CN204400843U (en) | 2014-12-31 | 2014-12-31 | High temperature furnace used electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204400843U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108151537A (en) * | 2017-12-14 | 2018-06-12 | 湖南顶立科技有限公司 | A kind of multi-layer composite electrode and manufacturing method |
-
2014
- 2014-12-31 CN CN201420861982.9U patent/CN204400843U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108151537A (en) * | 2017-12-14 | 2018-06-12 | 湖南顶立科技有限公司 | A kind of multi-layer composite electrode and manufacturing method |
| CN108151537B (en) * | 2017-12-14 | 2019-09-17 | 湖南顶立科技有限公司 | A kind of multi-layer composite electrode and manufacturing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 413001 No. 2 Yingbin West Road, Hunan, Yiyang Patentee after: Hunan gold carbon Limited by Share Ltd Address before: 413001 No. 2 Yingbin West Road, Hunan, Yiyang Patentee before: Hunan KBCarbon Composite Science and Technology Co., Ltd. |