Numerical simulation on reho-diecasting mould filling of an automobile master brake cylinder

Yue-long Bai1,2),Wei-min Mao1),Hong Xu3),Jun Xu2) 1) School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China 2) General Research Institute for Non-ferrous Metals,Beijing 100088,China 3) Research Center for Foundry Engineer,North University of China,Taiyuan 030051,China

摘 要：An apparent viscosity model of semi-solid A356 aluminum alloy has been developed and the software Castsoft6.0 coupled with the model has been used to simulate the mould filling of an automobile master brake cylinder with the semi-solid A356 alumi-num alloy slurry. The simulation results are in agreement with the practical filling process,indicating that the apparent viscosity model is feasible and can be used to simulate the mould filling of the semisolid A356 aluminum alloy slurry and can be used to opti-mize the filling process and the design of dies. A higher injection pressure,a higher ingate flow velocity of the semi-solid slurry,and a higher slurry temperature are advantageous to the mould filling of the automobile master brake cylinder.

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