Many people have a certain understanding of high carbon ferrochrome, but since they are not engaged in this industry, they are not very familiar with its smelting process, especially why the electrode needs to be lowered during the production of high carbon ferrochrome. When smelting high carbon ferrochrome, the tapping time is about ten to twenty minutes. If the tapping time process is properly controlled, it will not only lower the temperature of the furnace bottom, but also reduce the smelting time of high carbon ferrochrome, So in order to ensure the casting time, the electrode will be lowered, and there are three detailed reasons for lowering the electrode.
1. After opening the tap hole, as the molten iron gradually flows out, the distance between the electrode and the surface of the intracranial molten iron will increase, the resistance will increase, and the electrode will significantly decrease. This is beneficial for the electrode to pour tea, thus creating favorable conditions for the next expansion of the crucible and increasing the temperature of the bridge furnace.
2. The arc generated by the electrode emits electrons, which have a jet pressure. As the electrode descends, its pressure increases, which can also promote the rapid outflow of molten iron and shorten the time for iron production.
3. As the iron is being cast, the crucible will gradually become empty. The electrode should be slowly lowered to prevent material collapse. If the operation is improper and the material collapses during the casting process, it will delay the casting time. As the molten iron flows out and the material level drops, the top of the crucible will gradually press down. At this time, the electrode will also slowly lower, forcing the casting time to decrease.