Metal flow in the precision forging of aluminum alloys

To research impeller parts flow behaviors in the die forging process, the finite element method is used to study the deformation flow behavior of different shapes in the blank forming process. The results show that the blade parts of the forgings were hard to fill, but with the section of the blade shifting down, the metal has a marked trend to flow toward this area of the die cavity. Compared with a cylindrical shape, the die cavity of the blade part can be filled more easily and the uniformity of metal flow will increase. Using a ladder shape to manufacture forgings of impellers can meet requirements for design and properties.