Abstract: Taking low carbon steel Q235B, 250 mm×1 600 mm billet as research object, effects of the vibration feeding steel strip on the slab structure and performance was studied in one steel mill. Results show that, porosity in the center of cast billet and macro segregation of dispersion decreased through the continuous casting mould vibration feeding steel strip technology, which can improve the quality of macro structure and reduce the chemical heterogeneity shaft direction to the regional and then improve the plasticity in thick rolling plate.

Key words: continuous casting, equiaxed crystal, crystallizer, feeding steel strip