Transactions of Materials and Heat Treatment

Title：Pre-compensation method of blade precision forging die based on deformation analysis

Authors： Hu Xuechao Lyu Yanming Li Yankui Zhang Xingxing

Unit： Jiangnan University Jiangnan University

KeyWords： aviation blade precision forging die elastic deformation die compensation numerical simulation

ClassificationCode：TG316.3

year,vol(issue):pagenumber：2019,44(3):94-100

Abstract：

The elastic deformation of the mold profile during blade forging was simulated by the thermal elastoplastic finite element method and software DEFORM-3D, and the amount of elastic deformation of the mold profile under different forging steps was analyzed. Then, the amount of elastic deformation and deformation law of the mold profile with Z=75 mm, Z=35 mm and Z=5 mm were analyzed, respectively. The analysis results show that after the precision forging, the different degrees of elastic deformation occur in different parts of the mold cavity surface, the amount of elastic deformation of the inlet and outlet air is small, and in the heart of the blade body reaches maximum 0.2 mm. Then, the necessity of the elastic compensation of the original mold surface was expounded, and the elastic compensation method of the mold surface was analyzed to propose the reverse compensation method of the mold surface. Furthermore, the parameterized design of blade die surface pre-compensation was realized by UG secondary development technology, and the die surface compensation effects with Z=75 mm, Z=35 mm and Z=5 mm were analyzed, respectively. Finally, the analysis results show that the maximum deviation of the blade does not exceed 0.02 mm. The accuracy and reliability of the mold surface compensation method were verified by experiments.

Funds：

国家自然科学基金资助项目（61409230303）；国家重点新产品开发计划（2010GRC10021）

胡学超（1992-），男，硕士研究生，E-mail：727181064@qq.com；作者简介：吕彦明（1966-），男，博士，教授，E-mail：lvyanming126@126.com

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