Home > News

Conical Nipple Connection Electrode Should Pay Attention to the Problem

Pulished on Mar. 08, 2019

The biggest advantage of the conical Nipple  is that the longitudinal section of the hole wall of the electrode receiving portion is tapered, the outer wall is thin, the inner wall is thick, the overall strength is large, and it is not easy to burst, and the middle portion of the Nipple has a large diameter and is not easily broken.

The use of graphite electrodes such as UHP Graphite Electrode should pay attention to the following items:

(1) When selecting the electrode type and diameter, refer to the capacity of the electric furnace and the capacity of the transformer.

(2) During the loading and unloading and transportation process, the graphite electrode such as HP Graphite Electrode should be handled gently, protect the thread and prevent damage. (3) The graphite electrode should be protected from moisture during transportation and storage, otherwise it must be dried before use.

(4) Before connecting, the dust in the thread of the electrode Nipple hole should be blown off with compressed air, and then the Nipple and the electrode should be tightened. The tightening force should meet the requirements. In order to ensure that the different specifications of the electrode can reach the required tightening force when connecting, some electric furnace steel mills have specially built a tightening wrench, and the tightening plate has a sign indicating the tightening torque to ensure correct operation. The holder should be clamped below or above the bottom of the electrode Nipple.

(5) The electrode lifting device of the electric furnace should be flexible in response, and should not be shaken during operation to prevent the electrode or Nipple from being loosened and tripped.

(6) When loading the furnace, the bulk material should be placed in the lower part to prevent the collapsed material from breaking the electrode during melting.

(7) During the refining period, the electrode cannot be immersed in molten steel to increase the carbon, thereby preventing the electrode from being thinned, causing the electrode to break or the Nipple to fall.

(8) In order to prevent the electrode connector from loosening or tripping, it is recommended to use the connector pin.

Graphite Electrode