The flow morphology

turbulence and formation of gas hole in the aluminum alloy knuckle bracket in die casting were described by analyzing its structural features. Based on above analysis

the improved technological design was conducted

including strictly controlling the initial position and injecting angle as well as the thickness and lengh of ingate in mould cavity

and adopting smooth connection to relief the generation of turbulence of the liquid Al alloy in the in gate

and using longer diverter to ensure the fullness of the liquid Al alloy in the chamber as well as keeping the constant pouring temperature

and so on.