Spinning forming method for 5A06 aluminum alloy thick-wall conical cylindrical structure

The invention discloses a spinning forming method for a 5A06 aluminum alloy thick-wall conical cylindrical structure, belongs to the technical field of material processing, and aims to solve the problems that in the prior art, air holes, cracks and slag inclusion appear on a workpiece, the process is complex and difficult to control, and large-diameter thick-wall parts cannot be processed. The spinning forming method provided by the invention is realized in a manner of preparing a blank, debugging a spinning device and clamping the blank, performing for the first pass of thermal power spinning, annealing for the first pass, performing for the second pass of thermal power spinning, annealing for the second pass and machining. The technical problems that the wall thickness reduction rate of a large thick-wall conical structure is large, forming is difficult, hot spinning forming precision is difficult to control, and annealing deformation is large are solved. The processing efficiency and the material utilizati