Graphite Electrode

Definition of graphite electrode

Graphite electrode is high temperature resistant graphite conductive material. It is made of petroleum coke and pitch coke as aggregate and coal tar pitch as binder. The production process for graphite electrode includes Calcining, crushing ,screening,burdening, kneading, forming, baking, impregnation, graphitization and mechanical processing. The main raw material of graphite electrode production is petroleum coke, Coal tar pitch and Needle coke. The sulphur content of petroleum coke and pitch coke can not exceed 0.5%.

Types of electrode graphite

Graphite electrodes are divided into 4 Types: RP Graphite electrodes, HP Graphite electrodes, SHP Graphite electrodes, UHP Graphite electrodes. Graphite electrode has strong electrical conductivity and can produce high heat for a long time, so it is mainly used in producing electric arc furnace steel, and can also be used in steel refining and other smelting processes. 

Graphite electrodes use

1.Electrode holder should be placed outside the safety line of the top electrode, otherwise, it is easy to break the electrode. 

2.When connecting the electrode, we need to pay attention to whether there is nipple bolt shedding, if there is a shedding needs to be made up in time. 

3.Placement mode: in order to protect the product and prevent the electrode from breaking, the electrode should be ensured to avoid tilting operation and the, group of connected electrodes should not be placed horizontally. 

4.When putting materials in the furnace, should load bulk materials to the bottom of the furnace so as to reduce the influence of large charge on the electrode. 

5.It is forbidden to pile up large pieces of insulating material at the bottom of the electrode, otherwise, it will affect the use of the electrode and even break it. 

6.It is necessary to prevent steel slag from spattering on the thread of the electrode or joint, damaging the thread accuracy.

Why is graphite electrode graphite tip sharp?

The contact between the material and point is small so that the current resistance is bigger, which allows it to reach higher temperature. If it is too thick, the heat can easily transfer from the tip to the soldering iron, and a large part of the heat will dissipate without reaching the required temperature. The soldering iron works only when most of the energy is concentrated on the point to be welded.