风力发电机主轴锻件热加工工艺研究  

Study on Hot Processing Technology of Main Shaft Forgings of Wind Turbine

作　　者：马宏 魏世忠[2] 周玉成[2] MA Hong;WEI Shizhong;ZHOU Yucheng(CITIC Heavy Industry Co.,Ltd.,Luoyang 471000,China;National Joint Engineering Research Center for Abrasion Control and Molding of Metal Materials,Henan University of Science and Technology,Luoyang 471003,China)

机构地区：[1]中信重工机械股份有限公司,河南洛阳471000 [2]河南科技大学金属材料磨损控制与成形技术国家地方联合工程研究中心,河南洛阳471003

出　　处：《热加工工艺》2021年第3期82-85,91,共5页Hot Working Technology

基　　金：国家重点研发计划项目(2016YFB0300603);长江学者和创新团队发展计划资助项目(IRT1234)。

摘　　要：对风力发电机主轴用42CrMo4钢的合金元素熔炼成分范围进行了确定和有效控制。采用"自由锻+胎模锻"复合锻造成形技术,应用CAE仿真分析,研究了金属流动,实现了主轴锻件近净成形,锻件毛净比由自由锻的1.77降至1.52,重量减少14%。热处理采用"水淬油冷"取代传统的"油淬"冷却工艺,获得了回火索氏体+下贝氏组织,使各项力学性能满足技术标准要求,-20℃冲击功平均提高45.2 J。The alloy element melting range of 42 CrMo4 steel for wind turbine main shaft was determined and effectively controlled. Using the "free forging+loose tooling forging" composite forging technology, the metal flow was studied by CAE simulation analysis and the near-net forming of main shaft forgings was realized, the ratio of forging weight to part weight is reduced from 1.77 of free forging to 1.52, and the weight is reduced by 14%. In the heat treatment, using "water quenching oil cooling" replaces the traditional "oil quenching" cooling process, and the tempered sorbite +lower bainite structure is obtained, which makes the mechanical properties meet the technical standard, and the average impact work of-20℃ is increased by 45.2 J.

关 键 词：风力发电机 主轴锻件 热加工工艺 

分 类 号：TG316[金属学及工艺—金属压力加工]