The Ultimate Solution For Graphite Electrode Breakage
The ultimate solution for graphite electrode breakage
In view of the fracture of graphite electrode caused by operation, control and electrode quality in steelmaking, the following preventive measures and operation suggestions are put forward.
First of all, if the fracture is caused by smelting operation, we can do the following preventive measures.
(1) The electrode should adopt the strength suitable for the process requirements. Connector electrodes should be cleaned using nuts of appropriate strength and special clamping devices. Before replacing the electrode, tighten the ring to ensure that the ring is in close contact with the electrode.
(2) Reasonable fabric structure: In order to avoid the light steel ball on the top of the furnace is not easy to go down, and large pieces of scrap steel break the electrode, all kinds of waste in the cloth basket and the furnace need to be reasonably configured.
(3) The electrode clamp should be avoided on the white line between the electrode connections. The electrode connection should not be above the electrode holder. Electrode clips should not be clipped to an open hood or a hood with a sling.
(4) When melting, especially when close to melting, the distribution of unmelted substances should be carefully observed. In order to avoid the collapse material damaging the electrode, when the bridge structure has been formed, oxygen should be blown or physically wobbled or shaken first, so that the charge collapses in the case of power failure and the electrode has been raised.
The second is to control the cause of disconnection.
(1) After high-voltage power supply, it is necessary to observe whether the three-phase no-load voltage of the secondary short-circuit network is balanced.
(2) After the first phase electrode is in contact with the scrap steel, observe whether the secondary voltage of the first phase electrode decreases immediately.
(3) Periodically detect whether the braking force of the electrode hydraulic drive mechanism and the system delay coefficient change.
(4) Before the electrode automatically drops, confirm that there is no conductive material in the scrap steel layer directly below the electrode.
(5) When the phase electrode arcs, whether the phase electrode secondary current display can be seen (ammeter pointer swing is large).
Third, the fracture caused by the internal quality of the electrode.
In the smelting process, the key technical indicators of the electrode (joint) ultimately affect the electrode fracture, but the actual smelting effect of domestic ultra-high power graphite electrode is significantly different from that of foreign products of the same specification. Therefore, it is one-sided to judge the quality of the electrode (joint) only by physical and chemical indicators. Fully consider our company's products and different customers of smelting process, furnace structure, smelting steel type adaptability, to establish a set of scientific and reasonable electrode production and technical application program. The ultimate solution for graphite electrode breakage
In view of the fracture of graphite electrode caused by operation, control and electrode quality in steelmaking, the following preventive measures and operation suggestions are put forward.
First of all, if the fracture is caused by smelting operation, we can do the following preventive measures.
(1) The electrode should adopt the strength suitable for the process requirements. Connector electrodes should be cleaned using nuts of appropriate strength and special clamping devices. Before replacing the electrode, tighten the ring to ensure that the ring is in close contact with the electrode.
(2) Reasonable fabric structure: In order to avoid the light steel ball on the top of the furnace is not easy to go down, and large pieces of scrap steel break the electrode, all kinds of waste in the cloth basket and the furnace need to be reasonably configured.
(3) The electrode clamp should be avoided on the white line between the electrode connections. The electrode connection should not be above the electrode holder. Electrode clips should not be clipped to an open hood or a hood with a sling.
(4) When melting, especially when close to melting, the distribution of unmelted substances should be carefully observed. In order to avoid the collapse material damaging the electrode, when the bridge structure has been formed, oxygen should be blown or physically wobbled or shaken first, so that the charge collapses in the case of power failure and the electrode has been raised.
The second is to control the cause of disconnection.
(1) After high-voltage power supply, it is necessary to observe whether the three-phase no-load voltage of the secondary short-circuit network is balanced.
(2) After the first phase electrode is in contact with the scrap steel, observe whether the secondary voltage of the first phase electrode decreases immediately.
(3) Periodically detect whether the braking force of the electrode hydraulic drive mechanism and the system delay coefficient change.
(4) Before the electrode automatically drops, confirm that there is no conductive material in the scrap steel layer directly below the electrode.
(5) When the phase electrode arcs, whether the phase electrode secondary current display can be seen (ammeter pointer swing is large).
Third, the fracture caused by the internal quality of the electrode.
In the smelting process, the key technical indicators of the electrode (joint) ultimately affect the electrode fracture, but the actual smelting effect of domestic ultra-high power graphite electrode is significantly different from that of foreign products of the same specification. Therefore, it is one-sided to judge the quality of the electrode (joint) only by physical and chemical indicators. Fully consider our company's products and different customers of smelting process, furnace structure, smelting steel type adaptability, to establish a set of scientific and reasonable electrode production and technical application program.
