UHP steel melting furnace has outstanding advantages, but must have the following conditions in order to give full play to the role: ① strong supply network. Short circuit capacity should be more than 80 times the maximum capacity of the furnace transformer.metal melting machine Or install a huge capacitor compensation device (the high cost of doing so) to reduce voltage fluctuations on the network, so affect the normal operation of other electrical equipment. ② high power electrodes. UHP unit time input of energy is much higher than ordinary power electric arc furnace, which is equivalent to an ordinary power electrode sections are not competent. Increase the electrode section will make it support, drive and even bulky structure of the entire furnace, but also cause difficulties for the control system. UHP materials acicular electrode pitch, the crystal structure of the electrode has directivity. Its electrical conductivity, thermal conductivity, oxidation resistance, strength and other properties are better than ordinary power electrode equal cross-section. ③ efficient production management system. UHP EAF for 19 survey results indicate that approximately 20% achieved the effect of ultra-high-power, 60% played only a 60 to 70 percent of capacity, the other 20% will not play a role. Among them, the production organization and management is extremely important, not simply believe that electric arc furnace is equipped with a large-capacity transformer will be able to achieve the desired objectives.
Since the emergence of ultra-high power steel Melting furnaces and a variety of refining method, steel melting furnace has a melting device as a simple trend; and configure compatible with steel refining equipment production, in order to take full advantage of the ability of the furnace transformer improve steel production.
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