Based on Mg-5Sn alloy as simulation object

through understanding basic physical parameters of the alloy

combining with theory of the heat transfer and solidification theory

the numerical equation of a single roller during spinning process was established

and the solidification cooling rate at free side of Mg ribbon with 84μm in thickness prepared by melting-spining is 2.26×10

6

K/s.The model can be suitable for simulating rapidly solidified Mg-5Sn alloy.