MW级风电机组轮毂用QT400与QT450球墨铸铁关键服役性能对比  

Comparison of High-Cycle Fatigue Properties of QT400 and QT450 Ductile Iron for MW Wind Turbine Wheel Hub

作　　者：吴韬 姜依彤 陈光 帅栩 杨晨 龚潜海 毛鹏展 桂万元 WU Tao;JIANG Yi-tong;CHEN Guang;SHUAI Xu;YANG Chen;GONG Qian-hai;MAO Peng-zhan;GUI Wan-yuan(Department of Additive Manufacturing,Zhejiang Institute of Mechanical&Electrical Engineering,Hangzhou 310053,Zhejiang,China;Zhejiang Jiali wind technology Co.,Ltd.,Hangzhou 311241,Zhejiang,China;Zhejiang Metallurgical Research Institute Co.,Ltd.,Hangzhou 310015,Zhejiang,China;National Center for Materials Service Safety,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]浙江机电职业技术大学,高性能金属材料研发及成型技术创新团队,浙江杭州310053 [2]浙江佳力风能技术有限公司,浙江杭州311241 [3]浙江省冶金研究院有限公司,浙江杭州310015 [4]北京科技大学国家材料服役安全科学中心,北京100083

出　　处：《铸造》2024年第12期1674-1679,共6页Foundry

基　　金：浙江省“尖兵、领雁”重点研发项目(2022C01147,2023C01249,2024C04051)。

摘　　要：MW级风电机组球墨铸铁轮毂是连接其三根叶片和主轴的重要受力部件。由于其经常在恶劣的环境下工作,并且需要承受高冲击力和低温环境的考验,同时需要满足上百米的高空服役长达15~20年不更换,所以研究其疲劳性能具有非常重要的意义。系统研究了风电机组球墨铸铁轮毂用QT400与QT450低温冲击韧性和高周疲劳性能,同时结合断口分析来研究其疲劳现象,找出疲劳失效的主要原因是球化的好坏,是影响球墨铸铁拉-拉疲劳寿命的关键因素。通过对风电轮毂运行过程中应力分布进行数值模拟,得出其应力分布规律,以期为其安全服役提供数据支撑。The ductile iron wheel of the MW wind turbine is an important stress component connecting its three blades and the main shaft.Because it often works in harsh environment,it needs to withstand the test of high impact force and low temperature environment,and it needs to serve for 15-20 years at an altitude of hundreds of meters without replacement,so it is of great significance to study its fatigue performance.In this paper,the low-temperature impact properties and high-cycle fatigue properties of QT400 and QT450 used for ductile iron blades of wind turbines are systematically studied,and the fatigue phenomenon is studied by combining fracture analysis to find out the main reasons for fatigue failure.Through the simulation of stress distribution in the operation of fan hub,the stress distribution law is obtained,which provides data support for its safe service.

关 键 词：球墨铸铁 风电机组轮毂 应力分布 低温冲击韧性 高周疲劳 

分 类 号：TG143.5[一般工业技术—材料科学与工程]