High-speed Cold Roll Forming Roll Rolling Thermal Coupling Friction Simulation Analysis

Abstract

In order to reveal the impact of the rolling thermal coupling friction on the cold roll-beating during high speedcold roll-beating forming process, involute spline as the research object, established a high-speed cold roll-beating finite element model, the changes of elasto-plastic deformation and thermo-mechanical coupling stress during involute spline cold roll-beating contact are studied; and the distribution of temperature, stress and strain field under a single stroke; the stress, strain and temperature curves of the key elements are extracted, and the influence of temperature on the thermal coupling stress and strain is analyzed. The results show: in the process of cold roll-beating, the gradient distribution of strain field, temperature field and stress field in the area of severe deformation is very large, while the temperature, stress and strain of other small deformation areas are low; high strain and high temperature are mainly distributed in the direct contact with the rolling wheel surface area; the temperature generated during cold roll-beating reduces stress and increases the effectiveness of metal flow.