Electroslag smelting electric furnace system

Abstract

The invention discloses an electroslag smelting electric furnace system. An existing electroslag smelting electric furnace system comprises an integrally furnace-shaped crystallizer and an electrode device positioned on one side of the crystallizer, a bottom water tank for cooling is arranged at the lower end of the crystallizer, the electrode device comprises a supporting column, a transverse arm sleeves the supporting column movably, and an electrode is mounted on the transverse arm. The electroslag smelting electric furnace system is characterized by comprising two electrode devices and an electrode preheating device, the two electrode devices are arranged on two sides of the crystallizer correspondingly, the electrode preheating device is provided with a vertical heating chamber with an upper opening and a heating device, the lower end of each electrode can be inserted into the heating chamber, and the heating device can be used for heating the inserted electrodes. The electroslag smelting electric furnace system has the advantages of preheating function, high smelting efficiency and safety, excellent smelting effects, high efficiency, energy conservation, higher electroslag steel ingot smelting quality, great convenience in maintenance and replacement of the bottom water tank, lower maintenance cost and higher cooling efficiency.

Description

technical field [0001] The invention relates to an electroslag smelting furnace, in particular to an electroslag smelting electric furnace system. Background technique [0002] Electroslag smelting furnace is a kind of equipment for electroslag remelting. The structure of the electroslag smelting furnace mainly includes a furnace-shaped crystallizer as a whole, and an electrode device located on one side of the crystallizer. The lower end of the crystallizer is provided with a bottom water tank for cooling. The electrode device includes a pillar, and the movable sleeve on the pillar is equipped with a cross arm. , the cross arm is facing the crystallizer to install the electrode extending down into the crystallizer. The electrode includes the upper part for the fixed part connected with the cross arm and the lower part for the smelting part that is integrated into the electroslag during smelting; it also includes the smelting part for controlling The lifting mechanism that ...

AI Technical Summary

Problems solved by technology

[0004] But this existing electroslag smelting furnace has the following defects: 1. Electroslag smelting is generally a process of batch smelting, but when the existing electroslag smelting furnace works with a single system, the smelting process needs to be time-consuming. The pre-electroslag loading and electrode clamping preparation are all time-consuming, which makes the overall smelting production efficiency relatively low

2. During the smelting process, the electrode is inserted into the electroslag and then energized and heated, and there is a huge temperature difference between the new billet and the molten pool when the electrode blanks are alternated. Explosion or block falling occurs; falling into molten steel in the mold below will affect production at least, and bring operational danger to electroslag smelting production

The more serious impact is that after the new electrode blank enters the molten pool, the temperature of the molten pool in the crystallizer will suddenly drop due to the excessive temperature difference between the end of the blank and the molten pool, breaking the normal melting environment.

As a result, quality defects such as shells, slag grooves, uneven composition, and impurities appear in the electroslag ingot, which seriously affects the smelting quality of the electroslag steel ingot.

3. In addition, the existing bottom water tank structure of the crystallizer still has the disadvantage of inconvenient disassembly and assembly, which is not conducive to maintenance

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