电焊机2018，Vol.48Issue(5)：20-25,6.DOI:10.7512/j.issn.1001-2303.2018.05.04
直驱永磁同步风力发电机支架主焊缝残余应力研究
Research on residual stress of the main weld-joints of the direct-drive permanent magnet synchronous wind generator holder
赵震 1王庆兵 1梁力仁 2洪晓祥 2郭伟强2
作者信息
- 1. 江苏中车电机有限公司,江苏大丰224100
- 2. 航天工程装备(苏州)有限公司,江苏苏州215100
- 折叠
摘要
Abstract
In this paper,the welding residual stress of main weld-joint of the wind generator bracket was measured and studied.The butt joint of 40 mm-thickness Q345D plate in actual working condition was prefabricated by using the MAG welding according to the qualified welding procedure specification of multi-layer and multi-pass welding.In the welding process,the 4th,8th and 12th welded joint residual stress was tested by the blind-hole method.The test results show that the longitudinal residual stress reach peak area in the center of weld which is tensile stress,towards parent material tensile stress is gradually decreased,far away from the center of the weld residual stress is compressive stress.The transverse residual stress decreases from the peak of the tensile stress gradually.关键词
自动化MAG焊/Q345D厚板/小孔法/残余应力Key words
auto-MAG welding/Q345 plate/blind-hole method/residual stress分类
矿业与冶金引用本文复制引用
赵震,王庆兵,梁力仁,洪晓祥,郭伟强..直驱永磁同步风力发电机支架主焊缝残余应力研究[J].电焊机,2018,48(5):20-25,6.
