Transactions of Materials and Heat Treatment

Title：Design and optimization on precision die forging process of large complex curved blade

Authors： Liu Hui1 2 Kang Shangming3 Wang Shaohua1 2 Ma Zhifeng1 2

Unit：（1.Beijing Institute of Aeronautical Materials Beijing 100095 China 2. Beijing Engineering Research Center of Advanced Aluminum Alloys and Application Beijing 100095 China 3. AVIC Sanlin Aluminum Co. Ltd. Zibo 255086 China）

KeyWords： blade forging precision die forging preforging billet complex surface Deform

ClassificationCode：TG316

year,vol(issue):pagenumber：2019,44(2):1-6

Abstract：

For the complex curved blade forging with large specifications, the key points of design for complex curved blade forging mold were introduced, namely, the blade rotation positioning and the projection surface center superposition, and the material distribution and positioning design of variable diameter for preforging billet were adopted. Then, the process optimization of precision die forging was conducted based on the finite element simulation software Deform3D, and the feasibility of the process was verified by 100 MN hydraulic press. The results show that the design of blade rotation positioning and the projection surface center superposition reduces the offset and sliding of preforging billet. However, the total length of preforging billet is an important dimension, and the unilateral extension in the length direction is not less than 60 mm in the process of final forging. Furthermore, the preforging billet is designed with flat positioning which solves the problem of offset and sliding. Finally, the preforging billet was distributed with variable diameter, and its size was optimized. The forging is completely filled, and the standard deviation SD value of flash width uniformity reaches the minimum.

Funds：

作者简介：刘惠（1987-），男，硕士，工程师 Email：liuhuisdu@126.com

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