Transactions of Materials and Heat Treatment

Title：Numerical simulation analysis and optimization on doubleroller rotary forging for large diameter and thin disc

Authors： Liu Xin Zhu Chundong Gao Yufan Wang Yingjun

Unit： School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China

KeyWords：

ClassificationCode：TG331

year,vol(issue):pagenumber：2019,44(5):53-57

Abstract：

In order to research doubleroller rotary forging process for large diameter and thin disc, two different models of closed die and floating die were designed by UG. For the disc with diameter Φ500 mm and thickness 5 mm, two kinds of die structures were analyzed by numerical simulation analysis software Deform3D, and the closed die was determined to be the optimized scheme. Then, the process parameters of doubleroller rotary forging were optimized by the orthogonal test on the closed die. The results show that the initial temperature of billet, the rotational speed of swing head, the feeding speed of lower die and the friction coefficient between workpiece and lower die have important influence on the forming of large diameter and thin disc by doubleroller rotary forging. When the initial temperature of billet is 950 ℃, the rotational speed of swing head is 75 r·min-1, the feeding speed of lower die is 1 mm·s-1, and the friction coefficient of workpiece and lower die is 0.5, the forming quality of the disc is better. Thus, the large diameter and thin disc with good quality is obtained by actual test.

Funds：

国家自然科学基金资助项目（51875427）

作者简介：刘鑫（1995-），男，硕士研究生 Email：2992372688@qq.com 通讯作者：朱春东（1963-），男，硕士，教授 Email：zcdzcd6252@sina.com

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