风电机组用QT400-18AL焊条电弧焊堆焊修复研究
Arc Welding Process and Properties for QT400-18AL in Wind Turbines
- 2022年52卷第8期 页码:89-94
DOI: 10.7512/j.issn.1001-2303.2022.08.12
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刘洪冰,卢仁峰,陈超凡,等.风电机组用QT400-18AL焊条电弧焊堆焊修复研究[J].电焊机,2022,52(8):89-94.
LIU Hongbing, LU Renfeng, CHEN Chaofan, et al.Arc Welding Process and Properties for QT400-18AL in Wind Turbines[J].Electric Welding Machine, 2022, 52(8): 89-94.
风电机组中多处使用球墨铸铁QT400-18AL,包括偏航制动盘、发电机高速制动盘、偏航减速器底座等。经过一段时间运行,以上部件容易出现裂纹等失效形式,需要进行塔上在线修复。采用铸铁焊材LRF-01对QT400-18AL进行焊接试验,并测量其机械性能。试验结果表明:相对于Z308等传统焊材,采用LRF-01焊接QT400-18AL时,有效降低了裂纹、气孔等缺陷出现的概率,焊后机械性能满足风电机组的要求,证明LRF-01焊材可用于风电机组的部件修复。
QT400-18AL is widely used in wind turbines, such as yaw brake disc, generator brake disc, yaw reducer foundation. Cracks and other failures of these components will occur after the wind turbine operates for some time. Thus, repairing them as soon as possible is of great significance. We weld QT400-18AL with a new kind of welding rod LRF-01, and measure the mechanical properties and obtain the results. LRF-01 has its advantages compared to traditional welding rod, such as Z308. Welding defects such as cracks, blowholes are reduced. The mechanical properties of the welding samples can meet the requirements of the wind turbines. LRF-01 can be applied for repairing some components of wind turbines.
球墨铸铁QT400-18AL铸铁焊材LRF-01焊接性能机械性能风电机组
QT400-18AL spheroidal graphite cast ironLRF-01welding performancemechanical propertywind turbine
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