In view of the fracture of good price and quality UHP Graphite electrode in steelmaking, the internal quality of UHP Graphite electrode in china and smelting process operation are analyzed from different angles, which can be summarized into the following three categories: Operation reason, control reason and good price and quality UHP Graphite electrode quality reason.

First: Operation reason
(1) Broken good price and quality UHP Graphite electrode in china due to material collapse
If the waste steel in the furnace has formed a bridge structure during the smelting process, especially when it is close to melting, the long-time short arc operation will produce a large lateral impact force of material collapse; When the good price and quality UHP Graphite electrode in china is loosened at some place, the probability of fracture at the junction is also high due to the oxidation accelerated electrode thinning.
(2) Breaking of good price and quality UHP Graphite electrode in china by resonance
The good price and quality UHP Graphite electrode in china is bound to vibrate under the action of electromagnetic force in the smelting process. If the mechanical vibration frequency of the electrode column is close to or synchronized with the electromagnetic force vibration frequency, the good price and quality UHP Graphite electrode in china will resonate, which is easy to lead to electrode fatigue and fracture.
(3) Broken good price and quality UHP Graphite electrode in china due to nonstandard clamping operation
If the electrode and the holder cannot be kept vertical, the good price and quality UHP Graphite electrode in china will have an additional horizontal force component; If there are foreign matters on the clamping surface, stress concentration is easy to occur at the clamping point; These poor operations are very easy to cause the good price and quality UHP Graphite electrode in china to break in the smelting process.

Second: control reason
(1) There are non-conductive objects under the good price and quality UHP Graphite electrode in china in the furnace.
In the process of driving the good price and quality UHP Graphite electrode in china down, after the lower end of the electrode contacts the non-conductive object, the electrode regulator cannot accurately judge that the electrode has been lowered in place, but the electrode regulator still controls the electrode to continue to fall, resulting in the longitudinal extrusion and fracture of the electrode and scrap steel.

(2) The good price and quality UHP Graphite electrode regulator cannot detect the decrease of the phase to ground voltage
If the neutral point of the voltage transformer is disconnected from the connecting line of the electric furnace bottom shell, the electrode regulator will not detect the decrease of the phase to ground voltage, and it is impossible to judge that the good price and quality UHP Graphite electrode in china has dropped in place, causing the electrode regulator to control the electrode to continue

(3) No arc current detected by good price and quality UHP Graphite electrode in china regulator
If the electrode regulator fails to detect the arc current after the graphite electrode is arced, or the arc current is very small, the electrode regulator will control the second phase electrode to continue to drop, which will cause the second phase electrode and scrap to be crushed and broken.

(4) The hydraulic drive mechanism of good price and quality UHP Graphite electrode in china regulator is abnormal.

Third: internal quality reasons of good price and quality UHP Graphite electrode in china

(1) The reason of good price and quality Graphite electrode connector breaking;

(2) The reason of broken good price and quality UHP Graphite electrode in china;