Transactions of Materials and Heat Treatment

Title：Study on key technologies of shaft parts with elliptical section formed by cross wedge rolling

Authors： HU Fa-guo WANG Bao-yu HU Zheng-huan(School of Mechanical Engineering University of Science and Technology Beijing Beijing 100083 China)

Unit：

KeyWords： elliptical section cross wedge rolling rotational speed ratio numerical simulation

ClassificationCode：TG335.19

year,vol(issue):pagenumber：2009,34(5):71-74

Abstract：

A new technology of shaft parts with elliptical section formed by cross wedge rolling was presented.The roller shape curve of dies changed with rotational speed ratio was derived.The forming process of shaft was simulated by using the three-dimension and rigid-plastic FEM software DEFORM-3D.During the course of rolling,while the rolled piece was radial compression and axial elongation under the action of dies,the elliptical profile was gradually generated by the roller shape curve at the top surface of dies.The change curve of rotational speed ratio presented stable at the stage of knifing and stretching,and cyclical fluctuation during finishing stage.Also periodic change mechanics parameter was obtained.

Funds：

国家自然科学基金资助项目(50675019,50435010);; 北京市自然科学基金资助项目(3082013);; 国家科技支撑计划项目(2006BAF04B03)

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