Reciprocated extruding device for preparing superfine grain magnesium alloy and processing method thereof

The invention provides a method for preparing a superfine grain magnesium alloy and belongs to the technical field of nonferrous metal plastic processing. The superfine grain magnesium alloy comprises a superfine grain magnesium alloy tube and a superfine grain magnesium alloy block. According to the method, a reciprocated extruding device for preparing the superfine grain magnesium alloy is included. The method for preparing the superfine grain magnesium alloy tube is characterized by comprising the following steps: fixing a reciprocated extruding die; pre-heating a magnesium alloy blank; heating equipment; placing the magnesium alloy blank; carrying out reciprocated extruding deformation; standing; and discharging a superfine grain magnesium alloy product. According to the method, the superfine grain magnesium alloy tube or the superfine grain magnesium alloy block can be prepared; and the production efficiency is high and the application range is very wide.