For the low plasticity and large height-diameter ratio aluminum magnesium alloy parts

the traditional processing method is difficult to achieve deep drawing with one time.For forming demand in aerospace and other fields

numerical simulation of multi-stage deep drawing process for the aluminummagnesium alloy（5A06）cylindrical parts was carried out.To meet the forming need of aluminum-magnesium alloy with large height-diameter ratio cylindrical cup

a forming process named hydrodynamic deep drawing（HDD）with radial hydraulic pressure was proposed.The results indicate that under the reasonable match of liquid chamber pressure and radial pressure loading paths

crack and deforming deficiency can be controlled

meanwhile

the forming steps and the forming limitation are reduced effectively.After the trial production

the numerical simulation analysis results was verified

and the qualified cylindrical part 5A06 was produced successfully.