In this paper,the production process of direct continuous casting after Q355C converter tapping was studied,the changes of[O]and[N]in the production process were analyzed,the non-metallic inclusions in the material were analyzed,the purity of steel was improved,the sensitive area of crack was avoided by composition design,the corner crack of slab was effec-tively controlled,and the hot charging rolling of slab was realized.The performance of the steel meets the quality requirements of Q355C,and the batch production is realized.
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