Transactions of Materials and Heat Treatment

Title：Pair rolling process of shallow L-shaped ring

Authors： Qi Huiping Pang Xiaolong Li Yongtang Lan Pengwei

Unit： Taiyuan University of Science and Technology Shanxi Key Laboratory of Metallic Materials Forming Theory and Technology Shanxi Jinrui High Pressure Rings Co. Ltd.

KeyWords： shallow L-shaped ring pair hot ring rolling process thermal-mechanical behavior impact toughness wind power flanges

ClassificationCode：TG335

year,vol(issue):pagenumber：2019,44(7):72-78

Abstract：

For the problems of unbalanced force and difficult forming in hot ring rolling process of shallow L-shaped ring, its force analysis was carried out, a ring rolling process suitable for shallow L-shaped ring was proposed, and the theoretical analysis and experimental study of the process were conducted. Then, the thermal-mechanical simulation experiments of Q345E steel often used in wind power flanges were performed, and the high temperature stress-strain curves of Q345E steel were obtained by studying its thermal-mechanical behavior. According to the theoretical analysis and the thermal-mechanical simulation experiments, the ring rolling process scheme was designed, and the ring rolling experiments were carried out. The experimental results show that the ring rolling process of shallow L-shaped alien ring can be smoothly performed by the above method, and the shallow L-shaped alien ring has small ellipticity and high dimensional accuracy. Furthermore, the rolled shallow L-shaped alien ring could fully meet the standard requirements of products which were verified by the mechanical properties experiments.

Funds：

国家自然科学基金资助项目（51575371,51875383）；山西省重点研发计划（03012015004）；国家留学基金资助（留金法［2017］ 5087）

齐会萍（1974-），女，博士，副教授，E-mail：qhp9974@tyust.edu.cn

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