Method for preparing wheel hubs through backward and forward extrusion

The invention discloses a method for preparing wheel hubs through backward and forward extrusion, which is applied to the production of wheel hubs manufactured by using magnesium alloys, aluminum alloys and other metals. A stand column (2) is arranged at the middle parts of a base (1) and a fixed plate (3) so as to form a rack, an extruder moving plate (4) is movably arranged on the stand column (2), a hydraulic system is arranged on the rack, a forming mechanism is arranged at the middle lower part of the extruder moving plate (4), and an ejection mechanism and a pick-up mechanism (13) are arranged in the internal middle part of the base (1); and the method for preparing a wheel hub (14) comprises the following steps: putting preheated metal blanks into a container forming mechanism, and extruding a main oil cylinder (5) to push a forward extruding rod (11) to carry out extrusion on the metal blanks, so that the shape of the wheel hub (14) is extruded in one step. Because special extrusion equipment and a sc