Process research on cogging rolling of H beam

H beam has been widely used in industry and civil steel structure. But there are many key technologies that must be solved in order to produce high quality H-beam. This paper describes an investigation into the rolling technology using MARC software to model reversing rolling process of H-beam and compare the results with PDA data. A FEM model involving in three-dimensional, elasto-plastic and thermo-mechanical coupling has been established successfully to predict this multi-pass rolling process. The analysis produces outputs such as deformation rules, rolling force. The mechanism that the web is built up during the rolling process is also discussed. The influence of web reduction, the ratio of web reduction ration and flange reduction ration are also discussed. A new rolling schedule is suggested in order to improve the quality of the final product and improve rolling efficiency.