By using self-developed wave-like sloping plate

semi-solid billets with sound microstructure and excellent thixoforming property have been prepared in the condition of the cooled sloping plate.While the sloping plate was heated

semi-solid slurry with good microstructure has been prepared.During preparing semi-solid alloy by using wave-like sloping plate

the co-action of the exploration of nucleation in the whole melt with the dendrite broken results in the formation of fine spherical microstructures in the semi-solid alloy

and casting temperature

cooling rate

sloping angle and the materials of the sloping plate are dominant in the formation of microstructure of semi-solid alloy.The pouring temperature ranges of preparing semi-solid billets for AlMg3 and AlSi6Mg2 are 660

6

90 ℃ and 660

6

80 ℃

respectively.AlSi6Mg2 semi-solid slurry with good microstructure can be prepared with pre-heating temperature at 300 ℃ for sloping plate and pouring at 680 ℃.