The forming of sleeve parts was studied by using isothermal forging technology. Die forging process of 2 A50 aluminium alloy forgings and influence of forging die structure on stress and strain of forgings were also studied. The influence of the three structures of the flash cavity on the filling rate of the forgings was compared. It is found that the flash of forgings formed by closed die forging with III-type flash cavity structure is the leas...
