CN213403570U - Hollow graphite electrode - Google Patents
Hollow graphite electrode Download PDFInfo
- Publication number
- CN213403570U CN213403570U CN202022595836.4U CN202022595836U CN213403570U CN 213403570 U CN213403570 U CN 213403570U CN 202022595836 U CN202022595836 U CN 202022595836U CN 213403570 U CN213403570 U CN 213403570U
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- Prior art keywords
- electrode
- graphite
- coating
- oxidation
- electrode main
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 239000010439 graphite Substances 0.000 title claims abstract description 57
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 57
- 238000000576 coating method Methods 0.000 claims abstract description 66
- 239000011248 coating agent Substances 0.000 claims abstract description 63
- 238000005507 spraying Methods 0.000 claims abstract description 10
- 230000003647 oxidation Effects 0.000 claims description 30
- 238000007254 oxidation reaction Methods 0.000 claims description 30
- 239000003963 antioxidant agent Substances 0.000 claims description 15
- 230000003078 antioxidant effect Effects 0.000 claims description 15
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000003064 anti-oxidating effect Effects 0.000 abstract description 22
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 12
- 229910010271 silicon carbide Inorganic materials 0.000 description 11
- 238000000034 method Methods 0.000 description 7
- 239000002105 nanoparticle Substances 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 4
- 239000002006 petroleum coke Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005524 ceramic coating Methods 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 239000011331 needle coke Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000011300 coal pitch Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model relates to a graphite electrode technical field just discloses a hollow graphite electrode, including the electrode main part, the electrode main part includes hollow, graphite rod, anti-oxidation coating one, anti-oxidation coating two, anti-oxidation coating three and electrode shell, hollow middle part of running through the graphite rod, anti-oxidation coating one spraying is in the outside of graphite rod, and two spraying of anti-oxidation coating are in anti-oxidation coating one's outside, and anti-oxidation coating three parcel is in anti-oxidation coating two's outside, and electrode shell parcel is in anti-oxidation coating three outside, the screw thread seat has been seted up to the top fixedly connected with thread head of electrode main part, the bottom of electrode main part. The utility model provides a current graphite electrode production cycle length, consume energy big, inside and outside uneven quality of density can not guarantee etc. the problem that current density is little, life is short of passing through reaches the electrode and bears great current density, improves the utilization ratio of electrode and life's purpose.
Description
Technical Field
The utility model relates to a graphite electrode technical field specifically is a hollow graphite electrode.
Background
The graphite electrode is made up by using petroleum coke and needle coke as raw material and coal pitch as binding agent through the processes of calcining, proportioning, kneading, press forming, roasting, graphitizing and machining, and is a conductor for heating and melting furnace charge by using electric energy released in the form of electric arc in electric arc furnace. The main raw material for producing the graphite electrode is petroleum coke, a small amount of asphalt coke can be added into the common power graphite electrode, and the sulfur content of the petroleum coke and the sulfur content of the asphalt coke cannot exceed 0.5 percent. Needle coke is also required to be added when producing high-power or ultra-high-power graphite electrodes. The main raw material for producing the anode for aluminum is petroleum coke. Graphite electrodes have the advantages of easier processing, high removal rate of discharge machining and low graphite loss, so that some group-based spark machine customers abandon copper electrodes and change graphite electrodes. In addition, some specially shaped electrodes cannot be made of copper, but graphite is easier to form, and copper electrodes are heavier and unsuitable for machining large electrodes, all of which contribute to the use of graphite electrodes by some group-based spark machine customers.
The graphite electrode in the prior art is in a solid column shape, and has the defects of long production period, large energy consumption, non-uniform internal and external density, incapability of ensuring quality and the like in production, and small passing current density, short service life and the like in use.
Disclosure of Invention
An object of the utility model is to provide a hollow graphite electrode reaches the electrode and bears great current density, improves the utilization ratio and the life's of electrode purpose.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a hollow graphite electrode, includes the electrode main part, the electrode main part includes hollow, graphite rod, anti-oxidation coating one, anti-oxidation coating two, anti-oxidation coating three and electrode shell, the middle part of graphite rod is run through to the hollow, and anti-oxidation coating one spraying is in the outside of graphite rod, and anti-oxidation coating two spraying is in anti-oxidation coating one's outside, and anti-oxidation coating three parcel is in anti-oxidation coating two's outside, and electrode shell parcel is in anti-oxidation coating three's outside.
The top of the electrode main body is fixedly connected with a threaded head, and the bottom of the electrode main body is provided with a threaded seat.
Preferably, the first oxidation resistant coating is formed by spraying a SiC coating.
Preferably, the material used for the second oxidation resistant coating is an HfC coating.
Preferably, the third oxidation-resistant coating is formed by spraying high-temperature oxidation-resistant ceramic.
Preferably, the graphite rod is composed of SiC nano-particles and graphite particles, the SiC nano-particles are distributed in the rod in a gradient manner, and the concentration of the SiC nano-particles is enhanced outwards along the radial direction of the graphite rod.
Preferably, the threaded head and the threaded seat are the same in size and can be connected in a threaded mode.
The utility model provides a hollow graphite electrode. The method has the following beneficial effects:
(1) the utility model discloses a set up the screw thread head at the top of electrode main part, set up the screw thread seat supporting with the screw thread head in the bottom of electrode main part for two electrode main parts can connect into longer graphite electrode through screw thread head and screw thread seat threaded connection, with shorter electrode main part, make the electrode main part can change the length of electrode main part according to the demand in the use, set up simultaneously and can make the electrode main part congest by better mechanical strength at the outermost electrode shell of electrode main part.
(2) The utility model discloses an outside at the graphite rod sets gradually anti-oxidation coating one, anti-oxidation coating two and anti-oxidation coating three, prevent the electrode main part at the in-process that discharges through three-layer anti-oxidation coating, take place the oxidation, make the life-span of graphite electrode reduce, process into hollow tubulose with the centre of electrode main part simultaneously, therefore production cycle has been shortened, the energy consumption is reduced, the output is improved, because the electrode main part designs into hollow tubulose, make the surface area increase of electrode, in use can make the electrode bear great current density, the utilization ratio and the life of improvement electrode.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a view of the structure of the present invention;
fig. 3 is a cross-sectional view of the present invention.
In the figure: 1 electrode main body, 2 thread heads, 3 thread seats, 4 hollows, 5 graphite rods, 6 oxidation resistant coatings I, 7 oxidation resistant coatings II, 8 oxidation resistant coatings III and 9 electrode shells.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
As shown in fig. 1-3, the utility model provides a technical solution:
a hollow graphite electrode comprises an electrode main body 1, wherein the electrode main body 1 comprises a hollow core 4, a graphite rod 5, an antioxidant coating I6, an antioxidant coating II 7, an antioxidant coating III 8 and an electrode shell 9, the hollow core 4 penetrates through the middle of the graphite rod 5, the graphite rod 5 consists of SiC nano particles and graphite particles, the SiC nano particles are distributed in a gradient manner in the rod, the concentration of the SiC nano particles is enhanced outwards along the radial direction of the graphite rod, silicon carbide (SiC) has the excellent characteristics of high temperature strength, strong inoxidizability, good abrasion resistance, good thermal stability, small thermal expansion coefficient, large thermal conductivity, high hardness, thermal shock resistance, chemical corrosion resistance and the like, various performances of the graphite rod 5 are enhanced by adding silicon carbide, the antioxidant coating I6 is sprayed outside the graphite rod 5, the antioxidant coating I6 is sprayed by using the SiC coating, the antioxidant coating I6 made by spraying the silicon carbide, the structure of the electrode main body 1 is compact, the mechanical strength is high, the quality is stable, the electrode main body is good in conductivity, the electrode main body is wear-resistant and high-temperature-resistant, the second oxidation-resistant coating 7 is sprayed outside the first oxidation-resistant coating 6, the material used by the second oxidation-resistant coating 7 is an HfC coating, the electrode main body 1 is enabled to have excellent oxidation resistance and high emission performance through the second oxidation-resistant coating 7, the third oxidation-resistant coating 8 is wrapped outside the second oxidation-resistant coating 7, the third oxidation-resistant coating 8 is formed by spraying high-temperature oxidation-resistant ceramic, a ceramic coating capable of blocking oxygen from diffusing to the surface of an electrode is formed in the electrode main body 1 through the third oxidation-resistant coating 8, the electrode main body 1 is effectively protected from being oxidized, the consumption and the production cost of the electrode main body.
The top fixedly connected with thread 2 of electrode main part 1, screw thread seat 3 has been seted up to the bottom of electrode main part 1, screw thread 2 is the same with screw thread seat 3's size, but threaded connection, but set up screw thread 2 through the top at electrode main part 1, set up screw thread seat 3 supporting with screw thread 2 in the bottom of electrode main part 1, make two electrode main parts 1 can be through screw thread 2 and 3 threaded connection of screw thread seat, connect into longer graphite electrode with shorter electrode main part 1, make electrode main part 1 can change electrode main part 1's length according to the demand in the use.
When the graphite electrode is used, the threaded head 2 is arranged at the top of the electrode main body 1, the threaded seat 3 matched with the threaded head 2 is arranged at the bottom of the electrode main body 1, so that the two electrode main bodies 1 can be in threaded connection with the threaded seat 3 through the threaded head 2, the shorter electrode main body 1 is connected into a longer graphite electrode, the length of the electrode main body 1 can be changed according to requirements in the using process of the electrode main body 1, the oxidation-resistant coating I6 made of silicon carbide is sprayed, the structure of the electrode main body 1 is very compact, the mechanical strength is high, the quality is stable, the graphite electrode has good conductivity, the graphite electrode is wear-resistant and high-temperature-resistant, the electrode main body 1 has excellent oxidation resistance and high emission performance, the ceramic coating capable of blocking oxygen from diffusing to the surface of the electrode is formed in the electrode main body 1 through the oxidation-resistant coating III 8, and the electrode main body, and then reduce consumption and production cost of the electrode body 1, set up the hollow 4 in the middle of the electrode body 1, thus has shortened the production cycle, has reduced the energy consumption, has raised the output, because the electrode body 1 is designed into the hollow tube shape, make the surface area of the electrode body 1 increase, can make the electrode bear the greater current density in use.
To sum up, the utility model discloses a set up the screw thread head 2 at the top of electrode main part 1, set up the screw thread seat 3 that matches with screw thread head 2 at the bottom of electrode main part 1, make two electrode main parts 1 can be through screw thread head 2 and screw thread seat 3 threaded connection, connect into longer graphite electrode with shorter electrode main part 1, make electrode main part 1 can change the length of electrode main part 1 according to the demand in the use, set up electrode shell 9 in the outermost of electrode main part 1 simultaneously can make electrode main part 1 possess better mechanical strength; through set gradually oxidation-resistant coating 6 in graphite rod 5's outside, oxidation-resistant coating two 7 and oxidation-resistant coating three 8, prevent electrode main body 4 at the in-process that discharges through three-layer oxidation-resistant coating, take place the oxidation, make graphite electrode's life-span reduce, process into hollow tubulose with electrode main body 1's centre simultaneously, therefore production cycle has been shortened, the energy consumption is reduced, the output is improved, because electrode main body 1 designs into hollow tubulose, make electrode main body 1's surface area increase, in use can make the electrode bear great current density, the utilization ratio and the life of improvement electrode.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (5)
1. A hollow graphite electrode comprising an electrode main body (1), characterized in that: the electrode comprises an electrode main body (1) and a cathode, wherein the electrode main body (1) comprises a hollow core (4), a graphite rod (5), a first antioxidant coating (6), a second antioxidant coating (7), a third antioxidant coating (8) and an electrode shell (9), the hollow core (4) penetrates through the middle of the graphite rod (5), the first antioxidant coating (6) is sprayed on the outer portion of the graphite rod (5), the second antioxidant coating (7) is sprayed on the outer portion of the first antioxidant coating (6), the third antioxidant coating (8) is wrapped on the outer portion of the second antioxidant coating (7), and the electrode shell (9) is wrapped on the outer portion of the third antioxidant coating (8); the top of the electrode main body (1) is fixedly connected with a threaded head (2), and the bottom of the electrode main body (1) is provided with a threaded seat (3).
2. A hollow graphite electrode as claimed in claim 1, wherein: the first oxidation resistant coating (6) is formed by spraying a SiC coating.
3. A hollow graphite electrode as claimed in claim 1, wherein: and the material used by the second oxidation resistant coating (7) is an HfC coating.
4. A hollow graphite electrode as claimed in claim 1, wherein: the third oxidation-resistant coating (8) is formed by spraying high-temperature oxidation-resistant ceramic.
5. A hollow graphite electrode as claimed in claim 1, wherein: the threaded head (2) and the threaded seat (3) are the same in size and can be in threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022595836.4U CN213403570U (en) | 2020-11-11 | 2020-11-11 | Hollow graphite electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022595836.4U CN213403570U (en) | 2020-11-11 | 2020-11-11 | Hollow graphite electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213403570U true CN213403570U (en) | 2021-06-08 |
Family
ID=76193951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022595836.4U Active CN213403570U (en) | 2020-11-11 | 2020-11-11 | Hollow graphite electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213403570U (en) |
-
2020
- 2020-11-11 CN CN202022595836.4U patent/CN213403570U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240411 Address after: Industrial Zone of Lutai Economic and Technological Development Zone, Tangshan City, Hebei Province Patentee after: TANGSHAN KIMWAN SPECIAL CARBON&GRAPHITE Co.,Ltd. Country or region after: China Address before: 300180 building 12, application center, 174 Jintang Road, Hedong District, Tianjin Patentee before: TIANJIN KIMWAN CARBON TECHNOLOGY AND DEVELOPMENT CO.,LTD. Country or region before: China |
|
| TR01 | Transfer of patent right |