Transactions of Materials and Heat Treatment

Title：Numerical simulation and analysis on cross wedge rolling forming process for T91

Authors： Yang Yong He Tao Wang Zexuan Li Yan Wang Tao

Unit： Shanghai University of Engineering Science

KeyWords： T91 cross wedge rolling Deform-3D

ClassificationCode：

year,vol(issue):pagenumber：2015,40(10):148-153

Abstract：

The cross wedge rolling process of T91 shaft parts was simulated by finite element analysis software Deform-3D based on the cross wedge rolling theory and combined with the industrial practice. The change regularities of strain, temperature and speed in wedging, broadening and finishing stages were expounded by analyzing the metal flow in the rolling process. Further, the experiments on the H500 rolling mill were carried out, and the correctness of the rolling simulation was verified. Simulation and experimental results indicate that cross wedge rolling of T91 is completely feasible. However, the effective strain on the cross section from outer surface to core decreases first and then increases, while the temperature rises gradually. Therefore, the lowest temperature is about 880 ℃, and the highest temperature reaches about 1185 ℃ during the rolling process. Furthermore, both the strain and the temperature on longitudinal section decreases from intermediate symmetrical plane of rolled piece to stub bar, and the lowest temperature is about 1090 ℃, and the highest temperature reaches about 1185 ℃ during the rolling process.

Funds：

浙江省零件轧制成形技术研究重点实验室开放基金（ZKL-PR-200305）

杨勇（1986-），男，硕士研究生

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