Simulation Study on Twin-Roll Casting and Rolling Force of 6061 Aluminium Alloy
The three-dimensional model of the casting and rolling zone of the twin-roll casting and rolling process was established by using the large finite element analysis software Ansys,and the temperature field and solidification and melting phase diagram of the cast-ing and rolling zone were simulated.Combined with the force analysis of the solid phase zone during the casting and rolling process,the unit casting and rolling force of 6061 aluminium alloy in the casting and rolling solid phase zone and the stress limit of the material at the corresponding temperature were calculated under different process parameters.NF6-300 vertical casting and rolling machine was used to observe the surface morphology of the sheet,which corresponded to the simulation results and verified the accuracy of the model.The results show that compared with 1/4 and the core,the unit casting and rolling force at the edge of the material is larget,and the peak of unit casting and rolling force is increased by about 100%and 129%.When the process parameters are selected as casting temperature 690℃,casting and rolling speed 15 m/min,and casting temperature710℃,casting and rolling speed 13 m/min,the cracking of 6061 aluminium alloy casting and rolling sheets caused by casting and rolling force can be prevented.
6061 aluminium alloytwin-roll casting and rollingnumerical simulationcasting and rolling force
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