Ladle bottom structure capable of reducing continuous casting ladle cast residues

Abstract

The invention relates to a ladle bottom structure capable of reducing continuous casting ladle cast residues. The ladle bottom structure is characterized in that a ladle bottom and ladle walls form a ladle inner cavity together; the ladle bottom structure comprises a first flat surface, a second flat surface and a transition curved surface; the first flat surface is internally provided with a ladle outlet; the second flat surface is internally provided with a vent brick; the second flat surface is higher than the first flat surface; the transition curved surface is connected with the first flat surface and the second flat surface. The ladle bottom structure has the following advantages: (1) ladle cast residues can be greatly reduced, and the cast residues can be reduced by above 70% on the premise of preventing ladle slagging; (2) the transition between the second flat surface and the first flat surface is smooth, so that circulation flow of molten steel in a low-lying area during an argon blowing process can be ensured; (3) the ladle bottom structure is relatively simple, less in construction difficulty and low in maintenance cost.

Description

technical field [0001] The invention relates to a clad bottom structure, in particular to a clad bottom structure capable of reducing casting waste of large continuous casting ladles, and belongs to the technical field of metal materials and processing. Background technique [0002] Ladle is one of the main equipments of continuous casting production, mainly used to contain molten steel, and the surface of molten steel is covered with refining slag. In addition to storing and transferring molten steel, ladles also have a series of molten steel refining functions such as argon blowing and stirring, temperature regulation, composition adjustment, and inclusion control. In the continuous casting process, molten steel flows out from the outlet of the ladle and enters the crystallizer through the tundish. Under the conditions of continuous casting and continuous cooling, the cast slab of the required shape is formed and cut to length, which becomes the billet for rolling steel. ...

AI Technical Summary

Problems solved by technology

In order to accurately judge the start time of slag discharge and close the ladle outlet in time, so as to control the slag discharge and reduce casting waste as much as possible, in addition to manual observation, a series of automatic detection methods for ladle slag discharge have been developed, such as electromagnetic detection method, vibration detection method, weighing detection method, ultrasonic detection method, infrared detection method, etc. However, at present, most of the ladle bottoms at home and abroad are flat masonry. There will be a large casting allowance, which will affect the yield of molten steel

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