FEM Simulation And Optimize Of The Ring Rolling Process

Rolling is a forming method that the ring is rolled in the revolving die. Its feature is that using the rolling mill and die profile can deform the ring continuously and locally. So ring rolling is a process which it can thin the wall thickness, increase the diameter and shape the section.It dependents on many factors to shape the ring by the ring-rolling, such as rolling ratio the size of the stock the revolving velocity of the main roll feeding speed of the idler roll and so on. The simulation of the metal plastic process is the critical technology to design the die with reasonable parameter by low cost and manufacturing the products with good quality,it can describe the whole process of the metal plastic forming. It is the predetermination condition to establish the correct three-dimensional. In this paper, the FEM model we need is built by SOLIDWORKS software; Using DEF0RM-3D operates the simulation of the ring-rolling processIn this paper, the forging model is simulated, which is based on the plane upsetting model by DEFORM3D FEM analysis software, for studying the effect to the stress and strain distributing by changing the moving way of the top die and bottom die; It is simulated with different size and rolling ratio for studying min feeding quantity of deformed thoroughly; It is simulated using different friction coefficient for studying the effect of friction to deformed thoroughly; Finally, using the FEM method simulates the rolling deformation of ring. The alteration of the shape the stress and strain field and the strain ratio distribution are analyzed the calculation method of the load is obtained by studying the load stroke curve.In a word, FEM simulation is made in allusion to some questions in deformed thoroughly aspect, which is not be settledin the existing literature, such as considering the effect of friction. The studying to the min feeding quantity shows: because the count formula of the theoretical min suppress mete is received by predigesting on the basis of the plane-upsetting model. The ring can not be deformed thoroughly under the theoretical min suppress mete, only 0.05~0.09%o It is very difficult to calculate the min feeding quantity using the simply formula because the effecting factors are very complex. So we simulate the min suppress quantity for the ring rolling deformed thoroughly, by simulation we can offer gist for practice production. The study to the friction show: the smaller the fiction, the wider the strain distribution field, the easier the ring-rolling deformation and deformed thoroughly; the study to the main roll and the idler roll show: it is beneficial to ring deformed thoroughly when we enlarge the diameter of the main roll and the idler roll; by the simulation of the ring-rolling process, we obtain the strain field, stress field and the load stroke curve in the ring-rolling process. Through the load stroke curve, when m=0.7 the load value is larger by 4~5% thanexperience value, so m=0.7 can be used as simulation parameter to forecast the load in the production. These conclusions are instructive to design ring-rolling techniques and choose the equipment.