Aluminum surface micro-groove preparation method

The invention discloses a new aluminum surface micro-groove preparation method, and belongs to the technical field of mechanical preparation. A silicon micro-structure is prepared by photo-etching and wet etching, and an aluminum surface is embossed through the silicon micro-structure to obtain a micro-groove so as to realize controllable preparation of the aluminum surface micro-groove. The photo-etching can control the shape and period of the silicon micro-structure, has good precision, and can prepare the silicon micro-structure in batch so as to greatly improve the efficiency and overcome the defects of uncontrollability or low precision and low efficiency of the conventional method. The method can be used for drag reduction of ships and underwater vehicles.