High-strength graphite electrode

Abstract

The utility model discloses a high-strength graphite electrode, which belongs to the technical field of graphite electrodes and comprises a graphite electrode body and a connector, internal threads are respectively arranged at two ends of the graphite electrode body, a first external thread is arranged on the connector, a second external thread is arranged on the connector, a vertical groove is arranged on one side of the connector, and the vertical groove is connected with the graphite electrode body. A groove is formed in the graphite electrode body, an inner core of the graphite electrode body is a graphite electrode layer, the outer side of the graphite electrode layer is wrapped with a self-baking electrode, reinforcing ribs are uniformly distributed in the self-baking electrode, and the outer side of the self-baking electrode is wrapped with a wrapping layer; according to the high-strength graphite electrode, the interlayer shear strength is improved through the carbon nano reinforcing ribs, under the action of the vertical grooves and the grooves, stress is dispersed, the service life is prolonged, the weight of the graphite electrode body of the hollow structure is reduced, hot melting is reduced, the self-baking electrode has a self-repairing function, the consumption of the electrode is reduced, and the service life of the electrode is prolonged. And the anti-oxidation service life is prolonged through the coating layer of the amorphous carbon layer.

Description

Technical Field

[0001] This utility model specifically relates to a high-strength graphite electrode, belonging to the field of graphite electrode technology. Background Technology

[0002] Graphite electrodes, primarily made from petroleum coke and needle coke as raw materials and coal tar pitch as a binder, are manufactured through calcination, batching, mixing, molding, roasting, graphitization, and machining. They are conductors that release electrical energy in the form of an electric arc to heat and melt the furnace charge in an electric arc furnace. Based on their quality indicators, they can be divided into ordinary power, high power, and ultra-high power types. Graphite electrodes mainly include four categories: ordinary power graphite electrodes, anti-oxidation coated graphite electrodes, high power graphite electrodes, and ultra-high power graphite electrodes.

[0003] Existing graphite electrodes have low discharge capacity and low efficiency during operation. At the same time, existing graphite electrodes operate at high temperatures, which accelerates the oxidation rate of the graphite electrodes themselves and shortens their service life. In addition, the surface of graphite electrodes is extremely easy to wear, and due to the limitations of the material, graphite electrodes have poor impact resistance and are easily damaged. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by providing a high-strength graphite electrode to enhance its performance. The electrode includes a graphite electrode body and a connector. The graphite electrode body has internal threads at both ends, and the connector has a first external thread and a second external thread. A vertical groove is provided on one side of the connector. The graphite electrode body has a groove. The inner core of the graphite electrode body is a graphite electrode layer, and a self-baking electrode is wrapped around the outside of the graphite electrode layer. Reinforcing ribs are evenly distributed within the self-baking electrode, and a wrapping layer is also provided around the outside of the self-baking electrode.

[0005] Furthermore, the first external thread is threaded into the internal thread, and the end of the connector with the second external thread is frustum-shaped, with the vertical groove penetrating the connector.

[0006] Furthermore, the grooves are provided in several groups and are evenly distributed on the graphite electrode body, and the side of the grooves near the graphite electrode body is arc-shaped.

[0007] Furthermore, the reinforcing ribs are provided in several groups, and the material of the reinforcing ribs is carbon nanotubes.

[0008] Furthermore, the material of the encapsulation layer is amorphous carbon.

[0009] Furthermore, the self-baking electrode is welded to the graphite electrode layer.

[0010] Furthermore, the graphite electrode body is hollow.

[0011] Beneficial effects:

[0012] This invention improves interlayer shear strength through carbon nanotube reinforcing ribs, disperses stress and enhances service life under the action of vertical grooves and grooves, reduces the weight of the hollow graphite electrode body and reduces heat melting, the self-baking electrode has a self-repair function, reduces electrode consumption, and enhances oxidation resistance through the amorphous carbon layer coating. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is an exploded view of the structure of this utility model;

[0015] Figure 3 This is a partial structural cross-sectional view of the present invention.

[0016] In the figure: 1. Graphite electrode body; 2. Connector; 301. Internal thread; 302. First external thread; 303. Second external thread; 304. Vertical groove; 305. Groove; 401. Graphite electrode layer; 402. Self-baking electrode; 403. Reinforcing rib; 404. Encapsulation layer. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-3 As shown, a high-strength graphite electrode includes a graphite electrode body 1 and a connector 2. The graphite electrode body 1 has internal threads 301 at both ends. The connector 2 has a first external thread 302 and a second external thread 303. A vertical groove 304 is provided on one side of the connector 2. A groove 305 is provided on the graphite electrode body 1. The inner core of the graphite electrode body 1 is a graphite electrode layer 401. A self-baking electrode 402 is wrapped around the outside of the graphite electrode layer 401. Reinforcing ribs 403 are evenly distributed inside the self-baking electrode 402. A wrapping layer 404 is wrapped around the outside of the self-baking electrode 402. The interlayer shear strength is improved by the carbon nanotube reinforcing ribs 403. Under the action of the vertical groove 304 and the groove 305, stress is dispersed and the service life is enhanced. The hollow structure of the graphite electrode body 1 reduces weight and reduces heat melting.

[0019] As a technical optimization of this utility model, the first external thread 302 is threaded into the internal thread 301. The connector 2 has a second external thread 303 at one end which is frustoconical. The vertical groove 304 penetrates the connector 2. Several sets of grooves 305 are provided and evenly distributed on the graphite electrode body 1. The side of the groove 305 near the graphite electrode body 1 is arc-shaped. Several sets of reinforcing ribs 403 are provided. The material of the reinforcing ribs 403 is carbon nanotubes. The material of the coating layer 404 is amorphous carbon. The self-baking electrode 402 is welded to the graphite electrode layer 401. The graphite electrode body 1 is hollow. The self-baking electrode 402 has a self-repair function, reduces the consumption of the electrode, and enhances the antioxidant life through the coating layer 404 of the amorphous carbon layer.

[0020] Working principle: The graphite electrode layer 401 serves as the conductive core of the graphite electrode body 1. Its hollow structure reduces heat capacity and improves the thermal response speed in the electric arc furnace. The self-baking electrode layer 402 undergoes in-situ sintering under the high temperature of the electric arc. Its pitch-based raw material softens under heat and fills the pores between graphite layers, forming a dense protective layer. At the same time, welding ensures a tight bond with the graphite electrode layer 401. Carbon nanotube reinforcing ribs 403 are uniformly distributed within the self-baking electrode 402. Their axial high modulus characteristics suppress interlayer slippage. The amorphous carbon coating layer 404 forms a gradient transition interface through chemical vapor deposition. Its hybrid structure achieves lattice matching with the graphite layer, effectively blocking oxygen penetration. The vertical groove 304 and the recess 305 convert axial thermal stress into radial elastic deformation, enhancing service life and increasing the contact area.

[0021] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0022] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-strength graphite electrode comprising a graphite electrode body (1), a connecting head (2), characterized in that: The graphite electrode body (1) has internal threads (301) at both ends, the connector (2) has a first external thread (302) and a second external thread (303), the connector (2) has a vertical groove (304) on one side, the graphite electrode body (1) has a groove (305), the inner core of the graphite electrode body (1) is a graphite electrode layer (401), the graphite electrode layer (401) is wrapped with a self-baking electrode (402) on the outside, the self-baking electrode (402) has reinforcing ribs (403) evenly distributed inside, and the self-baking electrode (402) is wrapped with a wrapping layer (404) on the outside.

2. A high-strength graphite electrode as claimed in claim 1, characterized in that: The first external thread (302) is threaded into the internal thread (301). The connector (2) has a second external thread (303) at one end which is frustoconical. The vertical groove (304) passes through the connector (2).

3. A high-strength graphite electrode as claimed in claim 2, characterized in that: The grooves (305) are provided in several groups and are evenly distributed on the graphite electrode body (1). The side of the grooves (305) near the graphite electrode body (1) is arc-shaped.

4. A high-strength graphite electrode as claimed in claim 3, characterized in that: The reinforcing ribs (403) are provided in several groups, and the material of the reinforcing ribs (403) is carbon nanotubes.

5. A high-strength graphite electrode as claimed in claim 4, characterized in that: The material of the encapsulation layer (404) is amorphous carbon.

6. A high-strength graphite electrode as claimed in claim 5, characterized in that: The self-baking electrode (402) is welded to the graphite electrode layer (401).

7. A high strength graphite electrode as claimed in claim 6, characterized by: The graphite electrode body (1) is hollow.

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