Simulation Of Stainless Steel Clad Plate Hot Rolling

As modern industry has increasingly high requirement for materials, demand for composite materials is more and more strong. With the advantage of high performance and cost-effective, stainless steel clad plate will get more extensive application in the future. Hot rolling method is one of the most widely used way to manufacture stainless steel clad plate, which has low requirement to equipment, and can make mass production, so people has been studying it recent years.The Finite Element Method(FEM) has many advantages to traditional research method like experiment research and theoretical research, such as easy to control, cost savings, accurate calculations, etc, which makes FEM a better way to conduct quantitative analysis of the various laws of the plastic deformation. The hot rolling cladding process is highly nonlinear, which makes it hard to conduct FEM analysis precisely.In this research, by using ABAQUS FEA software and elasto-plastic FEM, a thermal-mechanical coupled stainless steel clad hot rolling model is established, a new composite criterion is proposed, and the deformation behavior of hot rolling process is studied. The research content is as follows:1. By combining multiple composite theories, a composite criterion is proposed, considering stress, strain and velocity. The rolling force equation of hot rolling stainless steel clad is deduced to verify the accuracy of the result of FEA.2. The distribution of stress, strain, velocity, residual stress and temperature of different reduction are compared, to analyze the effect of reduction for the hot rolling composite. The critical reduction rate and optimal reduction range of composite is determined by using the composite criterion.3. The distribution of thickness, elongation and warp of different reduction and different thickness ratio are compared, as to analyze the effect of reduction and thickness ration in the process of rolling deformation behavior, which can make guidance for forecasting the thickness ratio after rolling, and determine the optimal reduction and thickness ratio.4. The process of asynchronous rolling stainless steel clad was simulated, to verify that the asynchronous rolling can reduce the after-rolling warping phenomenon, which can prove that it can be used to improve the flatness after rolling and the quality of rolling composite. Different asynchronous speed ratios are compared to determine the best ratio.