Isolating plate structure for continuous casting of molten steel

Abstract

The invention relates to the technical field of metallurgy, and discloses an isolating plate structure for continuous casting of molten steel. The solating plate structure comprises a crystallizer, and an isolating plate is horizontally placed in the crystallizer; the isolating plate is not corroded by casting powder, and does not react with effective components in the molten steel; and the density of the isolating plate is higher than the density of liquid casting powder and lower than the density of the molten steel. The isolating plate is installed in the crystallizer through a plurality ofmounting brackets, the size of the isolating plate is smaller than the cross-section size of the crystallizer, and a clearance is reserved between the isolating plate and the wall of the crystallizer. According to the isolating plate structure for continuous casting of the molten steel, the reacting weight of strong reduction elements in the molten steel and casting powder is greatly reduced, andit is ensured that the the effect of the casting powder is achieved properly; the defects of slag entrapment and slag inclusion, and bleed-out accidents are reduced, and a crystallizer molten steel flow field and a temperature field are homogenized; and the casting blank quality is further improved.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a molten steel continuous casting isolation plate structure. Background technique [0002] In steel production, it is often necessary to add a certain amount of alloying elements, such as aluminum and rare earth, to steel for a certain purpose. However, these strong reducing elements will interact with oxides in mold flux such as Na during continuous casting 2 O, SiO 2 , B 2 o 3 and other reactions, causing harm: first, the amount of beneficial elements in molten steel is reduced, and inclusions in molten steel are increased; second, the chemical composition of mold slag is greatly changed, such as continuous casting of non-oriented silicon steel with Als>1.0%, Al in mold flux 2 o 3 Rise from 5% to 30%, thus deteriorating the performance of mold powder, causing serious surface quality problems of billets, and even causing breakout accidents. [0003] In order to solv...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to address the shortcomings of the above technology, to provide a molten steel continuous casting isolation plate structure, which can greatly reduce the reaction amount of strong reducing elements and mold slag in molten steel, ensure the normal function of mold slag, and reduce slag entrainment and slag inclusion Defects and steel breakout accidents, homogenizing the flow field and temperature field of molten steel in the mold, further improving the quality of casting slabs

Images