Prevention of lap formation in near net shape isothermal forging technology of part of irregular shape made of aluminium alloy A92618

This paper describes research on the isothermal enclosed die forging technology of an aluminium part with a deep central cavity and irregular shape. The formation of a lap was investigated with the help of QFORM-3D finite-element code, and the optimum conditions of enclosed die forging determined. The results of finite-element (FE) simulation were compared to experiment and good compatibility of results was obtained. The die set for experimental forging was designed according to the FE simulation results.