FEA Technique Simulation For Nosing Form Process Of A3 Steel Tube

The distribution of stress and strain during the forming process of punching pieces determines the flowing status of metal and the condition of losing stabilization, so they are very important to technological design and die design. The numerical simulation technology on punching finite element method (FEM) gets rid of reliance on traditional experience when design die in recent years to tie CAD with CAM in deed.As the finishing step in hot rolling of seamless steel tube, nosing technology decides the end product rate and quality. It is the development trend of steel tube nosing technology to go through from empirical analysis to quantitative analysis as every modern science and technology.3D non-linear FEA technique is used to simulate the whole process of nosing steel tube dynamically based on LS/DYNA module of ANSYS, and simulate effect of the interior stress and strain distributing, then analyse different ratio of high and diameter, different material thickness, different concave mould awl corner on stress and strain when nosing the part. The relationships of processing parameters and drawing force are achieved. In conclusion that utilize control process of steel tube thickness and concave mould speed, and obtain the purpose of reduce springback of the nosing process and forming of non-nosing. Thus Foundation is laid for optimal design of die structure and technological design of nosing steel tube.The flowing status of metal has been accurately analysed when nosing form, the forecast of losing stabilization has come true on the computer. It not only applies to nosing, but also to simulate the other process on punching, thereby propulsion development of CAD/CAM immensely.