The preparation of particle-reinforced aluminum matrix composites by stirring casting method has the advantages of short process and low cost. However

problems such as poor forming

pores

inclusions

and uneven distribution of reinforcement particles existing in the casting process make it difficult to fabricate large complex components. The electromagnetic stirring suction casting technology was proposed to solve the above problems. Compared with traditional gravity casting

the technology can simultaneously realize electromagnetic stirring and suction casting

avoiding the sedimentation of reinforcement particles during the casting process. Suction casting method can relieve poor melt fluidity

greatly increasing the filling speed and cooling uniformity. 20 SiC

p

/A357 composites was used as raw material

and electromagnetic stirring suction casting technology was adopted to successfully prepare a 40 kg aluminum-based composite shaft-mounted brake disc for rail transit. Compared with gravity casting

electromagnetic stirring suction casting technology can significantly improve the macroscopic and microstructure uniformity

density and mechanical properties of the brake disc

obtaining high-quality large-scale complex components of aluminum matrix composites.