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 Defdnn-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 Teduces 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.
作者
刘惠
康尚明
王少华
马志锋
Liu Hui;Kang Shangming;Wang Shaohua;Ma Zhifeng(Beijing Institute of Aeronautical Materials,Beijing 100095,China;Beijing Engineering Research Center of Advanced Aluminum Alloys and Application,Beijing 100095,China;AVIC Sanlin Aluminum Co.,Ltd.,Zibo 255086,China)
出处
《锻压技术》
CAS
CSCD
北大核心
2019年第2期7-12,共6页
Forging & Stamping Technology
