Abstract:A finite element analysis model of interference fit was created to simulate the pressing process of 352226X22RZ sealing cover for wagon roller bearings based on the friction heat flow coupling analysis model,and the data were obtained such as temperature field,plastic deformation,the maximum contact stress,and the maximum equivalent stress.After comparing with the result of elastic and plastic analysis,it can be concluded that the friction heat flow coupling analysis model conforms to the producing reality.The influence rules of pressing velocity on the temperature field,plastic deformation,the maximum contact stress,and the maximum equivalent stress were analyzed and the optimum pressing velocity was acquired.The analysis result shows that with the increasing of pressing velocity during the pressing process of sealing cover,the maximum temperature,the plastic deformation of sealing cover,the maximum contact stress and the maximum equivalent stress are all increased.Pressing experiment of sealing cover was performed on the YN2 pressure measuring torque machine,and the experimental result verified the correctness of the theoretical analysis result.