电焊机2017，Vol.47Issue(12)：117-121,5.DOI:10.7512/j.issn.1001-2303.2017.12.26
风力发电机电机转子焊接工艺
Welding technology of motor rotor for wind driven generator
马振 1牟立婷 2庄明辉 1吕迎 1连军 3李慕勤1
作者信息
- 1. 佳木斯大学材料科学与工程学院,黑龙江佳木斯154007
- 2. 佳木斯大学药学院,黑龙江佳木斯154007
- 3. 佳木斯电机股份有限公司,黑龙江佳木斯154007
- 折叠
摘要
Abstract
A welding method combining manual arc welding and gas shielded welding is used for 25CrMo and Q345D stainless steels,and the welded joints are prepared with the technologies,including J507R for backing welding,ER50-6 for filling and cosmetic welding,preheat temperature of 250 ℃,interpass temperature of 300 ℃,postweld heat treatment of 550 ℃/3 h,slow cooling and so on.The microstructure and properties in weld metal zone of 25CrMo and Q345D steels are studied by tensile test,bending test,impact test,Vickers hardness test,observation and analysis of the microstructure of welded joints and the appearance of impact fractures.The results show that the welded joints obtained by this welding technology have good welding quality,which provides a reference for materials selection and welding technology for the welding of 25CrMo and Q345D steels.关键词
25CrMo钢/冲击韧性/金相组织/焊接工艺评定Key words
25CrMo steel/impact toughness/metallographic structure/welding procedure qualification分类
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马振,牟立婷,庄明辉,吕迎,连军,李慕勤..风力发电机电机转子焊接工艺[J].电焊机,2017,47(12):117-121,5.
