Control and Regulation of Electrodes in an Electric Furnace from a FMEA

Some steelmakers companies use Electrical Arc Furnaces (also well-known as Fusion Furnaces) for the liquid steel fabrication, Sidor is one of them. The efficiency in the furnace will depend on how it is operated and also on the regulation processes during the calibration adjustment of the electrodes when they are moving up and down. The correct calibration control loops for the electrodes movement, helps to reduce its wear away, also reduce the wearing down of the refractory material and help to improve the use of the electrical energy. The overall contribution of these three aspects is to reduce manufacturing costs. From a maintenance perspective and starting with a FMEA (Failure Mode and Effects Analysis), a new regulation approach was developed to obtain a better control of the Sidor Furnace named 1, this was achieved establishing a regulation according to profiles and load regulation, from alternating electric current to impedance factor.