In response to the bottleneck problem encountered in the production of protective casting for thin slab continuous casting machines,the steel channel of the ladle has been separated by an air curtain,and the ladle cover has been modified.At the same time,the sealing effect between the plates has been further improved by adjusting the spring pressure of the ladle mechanism,so that the steel is completely isolated from the air during the casting process.The zero level proportion of type C and D inclusions reaches 90％,and the total amount of inclusions is controlled below grade 0.5 level.The implementation effect of the new protective casting technology is obvious.
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