Due to the impeller with many thin blades and the arc shaped
the difficulty point of design and working is the part formation in die casting mould. Design structure of die casting mould was presented
and production ways for part formation were described. Cavity of ten blades in forming parts was designed with inlaying five fixed inserts and five moving inserts
which was not only beneficial for mould making
but also beneficial for setting exhausting slot. The mould exhibits the feature of compact structure and reliable running performance as well as convenient operation.