Graphite electrode nipple

By:Win May 17, 2021
Graphite electrode nipple
Graphite electrode nipples are used to extend the electrode length, It has strict quality requirements, otherwise it is easy to break accidents.
Graphite electrode nipple

Graphite electrode nipple is mechanical processing with graphite electrode, the graphite electrode is cut into a number of nipples, and then mechanical processing. Graphite electrode with better quality is used for processing into nipples.
Graphite electrode and nipple structure drawing
Graphite electrode and nipple structure drawing
The quality of graphite electrode nipple is directly related to the use of the electrode in electric furnace steelmaking.
The connecting area between graphite electrode and nipple is a complex part with large electrical, thermal and mechanical loads, and is also a common part of fracture.
According to relevant data, in the electric furnace steelmaking, more than 80% of the electrode accidents are caused by the electrode nipple breaking or loosening tripping.
If the electrode nipple has a low volume density, its strength is generally low and it is easy to break when used.
If the resistivity of the electrode nipple is high, the temperature of the nipple will rise quickly when the power is switched on, which will result in greater thermal stress at the electrode nipple and increase the probability of breaking.
There is no reasonable match between electrode nipple and electrode machining precision index, and it is easy to break.
Material collapse, resonance, irregular clamping operation, abnormal condition of the electrode adjuster, the hydraulic drive mechanism of the electrode adjuster, and improper control measures such as the internal quality of the electrode can cause the electric furnace electrode to break.