Rheo-squeezing casting thin-walled disc parts have been carried out in special mould.Semi-solid slurry was produced by low superheat pouring with a shear field（LSPSF）technology

and then rheo-squeeze casting semi-solid slurry prepared was carried out on the 2 000 kN vertical oil-pressing machine.Microstructure and properties of rheo-squeezed casting parts were investigated.The results indicate that the fine and non-dendritic grain in thin-walled parts can be observed by rheo-squeeze casting at a constant pressure of 25 MPa with the mould temperature of 200 ℃ and pouring temperature of 600

6

20 ℃

and the average tensile strength elongation and maximum elongation reach 182.5 MPa

12.13% and 17%

respectively。