Finite Element Simulation Of Spinning Process In Taper Cylindrical Parts And Microstructure Analysis Of Products

The Cone Spinning Process is suitable for the manufacture of thin-walled high-precision super-long cone-shaped pieces,which has the advantages of small forming force,high production efficiency,cost saving and improved mechanical processing performance.It is widely used in aviation,Automotive,military,machinery and other fields.In this paper,the inner-spinning process of the cone-shaped thin-walled shell parts is studied by using the 2A14 aluminum alloy cone-shaped thin-walled shell.Through the finite element numerical simulation and experiment,The two kinds of internal spinning process and the organization and performance of the products were studied.The finite element simulation was carried out by using ABAQUS software to anneal the thin-walled shell of the cone-shaped shell.The distribution of spin pressure,stress and strain and wall thickness after forming were analyzed,and the spin force,three-direction stress and three-way strain were compared and analyzed under two kinds of processes.From the point of view of forming a small end of the rotary forming process is more stable end of the spin.The three-way stress of the big end and the big end is larger than that of the small end,and the three-way strain of the small end is more stable.The skin is the key part of the product,the stress and strain requirements are higher,so in the choice of forming process should try to choose the small end forming process.The finite element simulation of the preforming of the thin-walled shell of the cone-shaped shell was carried out by ABAQUS software.According to the difference of the reduction rate of each pass,the two processes were simulated,and the spin pressure,the three-way stress and the three-way strain were compared and analyzed.The quenching force of the preforming-intermediate quenching-final forming small-end rotation process is relatively large,but with the annealing-small-end rotation,the intermediate quenching-The residual stress value is obviously smaller,indicating that the intermediate quenching-small end of the spin 2 times the forming process than the annealing-small end of a spin from a more stable process.And the smaller the amount of thinning in the second pass,the better the performance of the resulting spinning product.The microstructures and mechanical properties of 2A14 aluminum alloy cone-shaped rotating parts were analyzed.The microstructures and mechanical properties of 2A14 aluminum alloy cone-shaped rotating parts were analyzed.Resulting in a more obvious fibrous tissue.After annealing,the amount of spinning deformation of the intermediate quenching spinning products is larger than that of the annealed-spinning products,but the grain size distribution is relatively uniform and the residual stress value of the products is relatively small.