CN205487381U - Graphite electrode - Google Patents

Abstract

The utility model discloses a graphite electrode, including graphite matrix, conductive copper bar, lead wire end cover and terminal, graphite matrix 's axis department is provided with the blind hole, the coating has silicon nitride ceramic above the inside wall of blind hole, conductive copper bar encircles graphite matrix 's axis evenly distributed is in in the graphite matrix, conductive copper bar with leave the clearance between the graphite matrix, the clearance intussuseption is filled with carbon black filler, conductive copper bar lies in graphite matrix part through bolted connection, its top with the lead wire end cover is connected, the lead end is covered the surface and is provided with the terminal. This graphite electrode operation is stable, anti oxidability is strong and long service life.

Description

A kind of graphite electrode

Technical field

This utility model relates to a kind of graphite electrode.

Background technology

At present in the industries such as metallurgy, plating, high-accuracy mechanical processing, graphite electrode is sent out in these industries Waving important effect, stability and reliability that graphite motor runs are directly connected to what Product processing produced Quality, and presently used graphite electrode is often solid graphite block structure, and separately pass through on end face Screw and copper lead-in wire is connected, although this structure can to a certain degree meet actually used needs, but In using, this kind of electrode is when energising, and along with temperature environment and the conversion of electric current, electric current is in electrode surface density Skewness, thus cause electrode serviceability to decline, and it is not enough to easily cause processing precision of products, same in this Time, current electrode is owing to being the graphite of a monoblock, and the most easily outlet fragmentation comes off and thermal diffusivity The drawback of energy difference, thus cause graphite electrode stability in use poor.

Further, it is poor that this graphite electrode weak point also resides in high-temperature oxidation resistance, in use, Graphite electrode oxygen easily and in air reacts and consumes in vain, simultaneously as graphite electrode is in use, It is typically directly with bolt overlap joint copper bar or directly will copper bar insertion graphite electrode to use, and copper bar Or the service life of copper bar is shorter, easily has influence on reusing of graphite electrode, in a disguised form decrease graphite Service life of electrode, cause waste of material.

Utility model content

For solving the existing problem that graphite electrode CURRENT DISTRIBUTION is uneven and oxidation-resistance property is poor, this reality With novel proposition one graphite electrode, this graphite electrode is stable, oxidation resistance strong and service life Long.

The technical solution of the utility model is achieved in that

A kind of graphite electrode, including graphite matrix, conducting copper, lead-in wire end cap and binding post, described graphite Being provided with blind hole at the axis of matrix, the medial wall applied atop of described blind hole has silicon nitride ceramics, described in lead Electrolytic copper row be evenly distributed in described graphite matrix around the axis of described graphite matrix, described conducting copper with Leaving gap between described graphite matrix, be filled with carbon black filler in described gap, described conducting copper is positioned at Graphite-based internal body portion is bolted, and its top is connected with described lead-in wire end cap, on described lead end lid Surface configuration has described binding post.

Further, described conducting copper distance graphite matrix outer surface distance is graphite matrix radical length 1/2-2/3。

Further, the width in described gap is 2-4 millimeter.

Further, the outer surface of described binding post is provided with screw thread.

The beneficial effects of the utility model:

1, it is provided with blind hole at its axis of graphite electrode of the present utility model, not only acts as and alleviate weight and also have Radiating effect.Medial wall applied atop in blind hole has silicon nitride ceramics, solves graphite electrode in prior art The electrode side occurred in smelting process aoxidizes the problem causing graphite electrode to be lost.

2, conducting copper is evenly distributed in graphite matrix around the axis of graphite matrix, and fills out between them It is filled with carbon black filler, not only makes homogeneous current distribution, and the graphite that Graphite Electrode Oxidation at High-Temperature causes is electric The problem of pole loss.

Accompanying drawing explanation

In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below by right In embodiment or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that below, Accompanying drawing in description is only embodiments more of the present utility model, for those of ordinary skill in the art, On the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the sectional view of this utility model graphite electrode.

Accompanying drawing indicates: 1, graphite matrix, and 2, conducting copper, 3, lead-in wire end cap, 4, binding post, 5, blind Hole, 6, carbon black filler, 7, bolt.

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment, to the technical side in this utility model embodiment Case is clearly and completely described, it is clear that described embodiment is only that this utility model part is real Execute example rather than whole embodiments.Based on the embodiment in this utility model, ordinary skill people The every other embodiment that member is obtained under not making creative work premise, broadly falls into this utility model The scope of protection.

With reference to Fig. 1, a kind of graphite electrode, including graphite matrix 1, conducting copper 2, lead-in wire end cap 3 and connect Terminal 4.Being provided with blind hole 5 at the axis of graphite matrix 1, the medial wall applied atop of blind hole 5 has silicon nitride Pottery.Conducting copper 2 is evenly distributed in graphite matrix 1 around the axis of graphite matrix 1.Conducting copper 2 The 1/2-2/3 that distance graphite matrix 1 outer surface distance is graphite matrix radical length.Conducting copper 2 and graphite Leaving gap between matrix 1, the width in gap is 2-4 millimeter.Carbon black filler 6 it is filled with in gap.Conduction Copper bar 2 is positioned at graphite matrix 1 part and is connected by bolt 7, and its top is connected with lead-in wire end cap 3, draws Line end lid 3 upper surface is provided with binding post 4.The outer surface of binding post 4 is provided with screw thread.

It is provided with blind hole 5 at its axis of graphite electrode of the present utility model, not only acts as and alleviate weight and also have scattered Thermal effect.Medial wall applied atop in blind hole 5 has silicon nitride ceramics, solves graphite electrode in prior art The electrode side occurred in smelting process aoxidizes the problem causing graphite electrode to be lost.Conducting copper 2 cincture The axis of graphite matrix is evenly distributed in graphite matrix 1, and is filled with carbon black filler 6 between them, no Only make homogeneous current distribution, and the problem of graphite electrode loss that Graphite Electrode Oxidation at High-Temperature causes.

The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, All within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, all Within protection domain of the present utility model should be included in.

Claims (4)

1. a graphite electrode, it is characterised in that include graphite matrix, conducting copper, lead-in wire end cap and connect Terminal, is provided with blind hole at the axis of described graphite matrix, the medial wall applied atop of described blind hole has nitridation Silicon pottery, described conducting copper is evenly distributed in described graphite matrix around the axis of described graphite matrix, Leave gap between described conducting copper and described graphite matrix, in described gap, be filled with carbon black filler, institute Stating conducting copper to be positioned at graphite-based internal body portion and be bolted, its top is connected with described lead-in wire end cap, Described lead end cap upper surface is provided with described binding post.

Graphite electrode the most according to claim 1, it is characterised in that described conducting copper distance graphite Outer surface of matrix distance is the 1/2-2/3 of graphite matrix radical length.

Graphite electrode the most according to claim 1 and 2, it is characterised in that the width in described gap is 2-4 millimeter.

Graphite electrode the most according to claim 3, it is characterised in that the outer surface of described binding post sets It is equipped with screw thread.