摘要
水力发电厂起重机械的吊具一般按非标准设计,体积庞大,在使用一定年限后,其钢结构在应力集中处和焊接缺陷处会产生裂纹或裂纹扩展,危害整机安全。采用常规无损检测技术进行定检工作量大,停机时间长,缺陷容易漏检。因此,通过对电厂起重吊具的现场试验和数据分析,得出声发射检测技术是可行的,无需停机,并且简单、方便、环保、节约,具有广阔的推广应用前景。
The slings of cranes in power plant usually are custom - made heavy ones, and they may develop crack or crack extension, that affects crane＇s safe operation, at the area of stress concentration or welding defect after 10 year use. Conventional non- destructive detection technology is characterized by heavy workload, long downtime and easy missing defects. Field test and data analysis show that acoustic emission detecting technology is practicable, and deserves promotion and application with advantages of no downtime, easy to use, environmental protection and energy saving.
出处
《起重运输机械》
2009年第4期107-109,共3页
Hoisting and Conveying Machinery
关键词
起重吊具
声发射
检测
方法
lifting sling
acousti cemission
testing
method
