Research Of Spinning Technology Of AZ31 Magnesium Alloy Cylindrical Workpieces

Aimed at the question that the car hub exists at present, have studied the influence of deformation parameters and extrusion technology parameters in the spinning caft of cylindrical workpieces of AZ31 magnesium alloy,as former experiment for magnesium-alloy car hub of spinning technique.High-precision and high-intension cylindrical workpieces are widely applied in industrial production, such as aeronautics, aerospace and automobile. Spinning is the most effective method in obtaining the cylindrical workpieces. In this dissertation,the MSC/MARC software is applied to carry out the elastic-plastic finite element numerical modeling in the spinning process of the magnesium-alloy cylindrical workpieces to get the stress-strain distribution rule,deforming flowing rule,rule in the different periods of the spinning formation stage,and later preliminarily analyze the mechanism of production of the destabilization,corrugation,and dehiscence.Numerical simulation,especially,the application of the FEM,has provided the advanced analytical methods of the spinning technique. The FEM is used to simulate the whole formation process,and is helpful to unveil the influential rules of the quality of final parts from the technological parameter,and it is also applied to shorten the research period,decrease the study cost,and provide the guidance and help in the experiments.It provides the basis for the conventional spinning experiment through the texture observation and performance testing of the different stock conditions of the AZ31 magnesium alloy.In the process of spinning experiment,it has analyzed the influence of spinning technological parameter on the end parts quality,and brought in the scheme of controlling spinning technological parameter. According to the numerical simulation and trial results,it has perfected the spinning technique,analyzed the mechanism of production of the blemish,brought in the relevant controlling measures.Meanwhile,through metal flowing process analyse in the spinning process of AZ31 magnesium alloy,influencing this decisive factor of plasticity are deformation temperature and speed. And has proved to the result of simulation through the experiment, show as a result:Because the spinning technology has adopted the rational craft parameter experemrnt, have avoided disadvantageous phenomenon in the spinning process. Through the optimization design of the mould and the metal is filled with performance better,has achieved the anticipated goal.