The fluid-thermal field of 1030 aluminum alloy by roll-casting was simulated by Fluent software

and the influence of casting speed and pouring temperature on fluid-thermal field was investigated. The results reveal that the flow field of aluminum melt in the cavity of Hunter nozzle is dominated by the casting speed. During the roll-casting process

the slower the roll casting speed is

the longer is allocated to the aluminum melt

and the smaller the velocity difference between the middle and the two sides of the nozzle outlet is

however

leading to the longer retention of the molten aluminum in the nozzle and the larger drop of temperature; Effect of pouring temperature on fluid-thermal field of aluminum melt is very limited

which only affects the velocity field in the edge area and the overall temperature distribution of the nozzle and hardly affects the distribution of fluid-thermal field. The condition that the casting speed is set at 1.2 m/min and the casting temperature is set at 695 ℃ is conducive to the flow and filling of melt in the nozzle cavity

which is the most conducive to the flow stability of nozzle and the quality of slab.