graphite electrode market share

Pubdate: 06-17 2021

graphite electrode market share

What are the machining accuracy deviations of graphite electrode and what are the consequences during use? What are the machining accuracy deviations of graphite electrode and what are the consequences during use?

(1) The center line of the graphite electrode body does not coincide with the center line of the joint hole, and the deviation of the center line exceeds the standard. After the upper and lower electrodes are connected, there is an untouched part on the edge of the electrode end surface. This not only affects the flow of current, but also increases the end surface of the graphite electrode. Oxidation area.

(2) The upper and lower end faces of the graphite electrode are not parallel or the center line of the electrode body is not perpendicular to one end face. After the two electrodes are connected, the end face is pressed and contacted, and there is a gap on the other side. The current cannot pass uniformly on the end face, resulting in local overheating. high. In addition, the upper and lower electrode axes are not in a straight line, and the joint is unbalanced in force. Once it is hit by strong vibration or collapsed material, the joint is easy to break.

(3) The thread pitch of the female thread of the electrode connector hole is processed according to the positive deviation, while the thread pitch of the male thread of the connector is processed according to the negative deviation. There is also a gap between the end faces of the two graphite electrodes, which seriously affects the passage of current, and the temperature of the joint rises quickly, which can easily cause the joint to break.

(4) The taper of the electrode joint is processed according to the positive deviation, and the taper of the graphite electrode joint hole is processed according to the negative deviation. After the two are connected, only the part of the thread on the outside of the joint hole near the end face is in contact with the part of the thread near the end face of the joint. tight connection.

(5) When there is a deviation of the thread angle or the center line of the thread angle, the threaded surface of the joint and the graphite electrode joint hole is not surface contact, but point contact or line contact, which will inevitably affect the passage of current, and the consequences will be It is the same when the pitch deviation is too large.

(6) If the joint hole diameter of the graphite electrode is processed according to the maximum allowable deviation, and the joint diameter is processed according to the minimum allowable deviation, then, although both meet the standards, they will inevitably become loose after connection. Under the strong vibration of the electric furnace, The connector and the lower electrode are easy to fall off.

 


Get the Quote

Send Mail Get Quote