The invention discloses a method for the micro-
thixotropy and molding of semisolid
metal through the assistance of supersonic vibration. The lower end of a lower mould is provided with an electric heater of the lower mould; the lower mould is connected with a supersonic amplitude
transformer; the lower mould is provided with a
thermocouple of the lower mould; the upper end of a
punching head is connected with an upper mould; the upper end of the upper mould is provided with an electric heater of the upper mould; the upper mould is connected with a pressure lever; and the upper mould is provided with a
thermocouple of the upper mould. A semisolid
metal blank material is remelted and heated to a
solid-liquid coexisting region and is subjected to pressure
machining; at the same time, supersonic vibration is applied to reduce friction and micro-molding resistance between the semisolid
metal blank material and a micro-mould, strengthen the fluidity of the semi-
solid metal material, improve the filling performance of the semisolid metal material in the micro-mould, and achieve good micro-molding effect. The method promotes the micro-
thixotropy and molding of the semisolid metal, improves the efficiency of micro-molding, reduces equipment cost, avoids the disadvantages of hole contraction and the like in micro-
machining process and improves the effects of micro-
thixotropy and molding of the semisolid metal.