LF (Ladle Furnace) and centring device and centring method for three-hole guide plate for electrodes of LF

Abstract

The invention provides an LF (Ladle Furnace) and a centring device and centring method for a three-hole guide plate for electrodes of the LF. The centring device comprises a support lantern ring, positioning pieces and at least three groups of centring components circumferentially fixed on the support lantern ring, wherein the support lantern ring is ring-shaped; the inner diameter of the support lantern ring is between the maximum outer diameter and the minimum outer diameter of the three-hole guide plate; the support lantern ring is mounted at an electrode slot of a water-cooled furnace cover through the positioning pieces; each centring component comprises a first fastening piece and a second fastening piece, which are connected with each other through threads; and through the centring components, the position of the three-hole guide plate can be adjusted. The centring method adopts the centring device for centring. The LF contains the centring device for the three-hole guide plate for the electrodes of the LF. The centring device of the LF, provided by the invention, is unique in process, is safe and applicable, greatly reduces the construction cost, avoids the idling time, reduces operating risks and significant potential hazards, and has remarkable economic benefits and social benefits.

Description

technical field [0001] The invention relates to the technical field of metallurgical equipment, more specifically, to a ladle refining furnace (LF furnace) and a centering device and a centering method for a three-hole guide plate of electrodes thereof. Background technique [0002] The ladle refining furnace is one of the key equipment in the refining system outside the steelmaking furnace. Its main function is to electrically heat the molten steel outside the furnace and fine-tune the composition of the molten steel. The function of the three-hole plate is to guide the three electrodes and insulate the three electrodes from each other. When the electrode is inserted into the molten steel for heating, the violent boiling of the molten steel and the oxidation reaction in contact with the air will leave some residue on the electrode rod. When the electrode is lifted after the heating process, the residue on the electrode rod will move the three-hole plate Scratch misalignmen...

AI Technical Summary

Problems solved by technology

When the electrode is inserted into the molten steel for heating, the violent boiling of the molten steel and the oxidation reaction in contact with the air will leave some residue on the electrode rod. When the electrode is lifted after the heating process, the residue on the electrode rod will move the three-hole plate Scratch misalignment (such as figure 2 As shown), the electrode cannot accurately pass through the three-hole plate during the second cycle operation, resulting in a production process accident that the motor breaks

However, every time a three-hole plate misalignment fault occurs, operators and maintenance personnel need to use a crane to re-hoist and reset the three-hole plate at the risk of high temperature burns, which not only increases the labor intensity and safety risks of the operators, but also increases the construction cost. Costs and Downtime

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