锻压技术

大规格复杂曲面叶片精密模锻成形工艺设计及优化

英文标题：Design and optimization on precision die forging process of large complex curved blade

作者：刘惠康尚明王少华马志锋

单位：（1.北京航空材料研究院北京 100095 2. 北京市先进铝合金材料及应用工程技术研究中心北京 100095 3.中航三林铝业有限公司山东淄博 255086）

分类号：TG316

出版年,卷(期):页码：2019,44(2):1-6

摘要：

以大规格复杂曲面叶片锻件为例，介绍了复杂曲面叶片锻造模具的设计关键点——叶片旋转定位和投影面中心重合。预锻坯料采取变直径物料分配设计和定位设计，基于Deform3D有限元模拟软件进行了精密模锻成形工艺优化，并在100 MN液压机上验证了工艺的可行性。结果表明：叶片旋转定位和投影面中心重合设计，减少了预锻坯料的偏移和滑动。预锻坯料总长度是重要尺寸，在终锻成形过程中，长度方向单边展宽不小于60 mm。预锻坯料进行了拍扁定位设计，解决了预锻坯料偏移和滑动问题。预锻坯料采取变直径物料分配并进行了尺寸优化，锻件充填完整，锻件飞边宽度均匀性标准差SD值达到最小。

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.

基金项目：

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

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