Based on the structural parameters and cooling conditions of Liansteel slab caster

a numerical model of solidification & heat transfer during steel Q235B 230 mm x 1280 mm slab continuous casting is established. The temperature distribution of slab and the variation of shell thickness are studied

and the effects of superheat and casting speed on the temperature of slab and the position of solidification end are also studied. It is concluded that with the increase of superheat and casting speed

the temperature at the center and comer of billet increases as a whole. With the same other parameters

the solidification end and the disappearance position of liquid phase move backward 0. 38 m and 0. 31 m respectively with every 10℃ of superheat increase

and the solidification end and the disappearance position of liquid phase move backward 2. 06 m and 1.4 m respectively with every 0. 1 m/min increase of casting speed. Through numerical simulation

the variation of slab temperature and solidification end position are mastered.