CN205491262U - Graphite electrode with carbon coated anode and cathode - Google Patents

Abstract

The utility model discloses a graphite electrode with carbon coated anode and cathode, including graphite matrix and conductive copper bar, coaxial protrusion is equipped with the bolt rather than an organic whole on graphite matrix 's the terminal surface, and coaxial indent is equipped with the nut rather than an organic whole on another terminal surface of graphite matrix, the nut with bolt looks adaptation, graphite matrix 's center is provided with the through -hole, the coating has silicon nitride ceramic above the inside wall of through -hole, conductive copper bar encircles graphite matrix 's axis evenly distributed is in in the graphite matrix, is conductive copper bar 12 of the radial length of graphite matrix apart from graphite matrix surface distance 2 3, conductive copper bar with leave the clearance between the graphite matrix, the clearance intussuseption is filled with carbon black filler. This graphite electrode with carbon coated anode and cathode operation is stable, anti oxidability is strong and long service life.

Description

Negative and positive button charcoal graphite electrode

Technical field

This utility model relates to a kind of graphite electrode, is specifically related to a kind of negative and positive button charcoal 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 negative and positive button charcoal graphite electrode, this negative and positive button charcoal graphite electrode is stable, antioxidation energy Power is strong and service life is long.

The technical solution of the utility model is achieved in that

A kind of negative and positive button charcoal graphite electrode, including graphite matrix and conducting copper, on the end face of graphite matrix Coaxial protrusion is provided with and bolt of its one, coaxial on the other end of graphite matrix in be arranged with and its one Nut, described nut is suitable with described bolt, described graphite matrix be provided centrally with through hole, described The medial wall applied atop of through hole has silicon nitride ceramics, and described conducting copper is around the axis of described graphite matrix Being evenly distributed in described graphite matrix, described conducting copper distance graphite matrix outer surface distance is graphite-based The 1/2-2/3 of body radical length, leaves gap, described gap between described conducting copper and described graphite matrix Inside it is filled with carbon black filler.

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

The beneficial effects of the utility model:

1, negative and positive button charcoal graphite electrode of the present utility model be provided centrally with through hole, produce on reduce energy Consumption, improves yield；Owing to increasing the surface area of electrode, electrode in use can be made to bear bigger electricity Current density, improves utilization rate and the service life of electrode.Medial wall applied atop at through hole has silicon nitride to make pottery Porcelain, solves the electrode side oxidation that in prior art, graphite electrode occurs in smelting process and causes graphite electrode The problem of loss.

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 negative and positive button charcoal graphite electrode.

Accompanying drawing indicates: 1, graphite matrix, 2, bolt, 3, nut, 4, through hole, 5, conducting copper, 6, Carbon black filler.

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 negative and positive button charcoal graphite electrode, including graphite matrix 1 and conducting copper 5.Graphite-based On the end face of body 1, coaxial protrusion is provided with and the bolt 2 of its one, coaxial on the other end of graphite matrix 1 Inside being arranged with and the nut 3 of its one, nut 3 is suitable with bolt 2.Being provided centrally with of graphite matrix 1 Through hole 4, the medial wall applied atop of through hole 4 has silicon nitride ceramics.Conducting copper 5 is around graphite matrix 1 Axis is evenly distributed in graphite matrix 1, and conducting copper 5 is graphite apart from graphite matrix 1 outer surface distance The 1/2-2/3 of matrix radical length.Gap is left, the width in gap between conducting copper 5 and graphite matrix 1 For 2-4 millimeter, in gap, it is filled with carbon black filler 6.

Negative and positive button charcoal graphite electrode of the present utility model be provided centrally with through hole 4, produce on reduce energy Consumption, improves yield；Owing to increasing the surface area of electrode, electrode in use can be made to bear bigger electricity Current density, improves utilization rate and the service life of electrode.Medial wall applied atop at through hole 4 has silicon nitride Pottery, solves the electrode side oxidation that in prior art, graphite electrode occurs in smelting process and causes graphite electricity The problem of pole loss.Conducting copper 5 is evenly distributed in graphite matrix 1 around the axis of graphite matrix 1, And be filled with carbon black filler between them, not only make homogeneous current distribution, and graphite electrode high temperature oxygen The problem changing the graphite electrode loss caused.

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 (2)

1. a negative and positive button charcoal graphite electrode, it is characterised in that include graphite matrix and conducting copper, described On the end face of graphite matrix, coaxial protrusion is provided with and the bolt of its one, the other end of described graphite matrix Being arranged with in the most coaxial and nut of its one, described nut is suitable with described bolt, described graphite matrix Be provided centrally with through hole, the medial wall applied atop of described through hole has silicon nitride ceramics, described conducting copper Axis around described graphite matrix is evenly distributed in described graphite matrix, described conducting copper distance graphite Outer surface of matrix distance is the 1/2-2/3 of graphite matrix radical length, described conducting copper and described graphite matrix Between leave gap, be filled with carbon black filler in described gap.

Negative and positive button charcoal graphite electrode the most according to claim 1, it is characterised in that the width in described gap Degree is 2-4 millimeter.