Ultrasonic Flaw Detection of Magnetic Pole Bolt of Main Generator of Diesel Locomotive
The bolt is subjected to alternating load during use,which is easy to produce fatigue cracks in the thread parts.Because the magnetic pole bolt of the engine owner's generator is not disassembled and repaired,the surface state of the bolt thread cannot be verified by MT.In order to ensure the surface quality of magnetic pole bolt thread,this paper adopts 10MHzΦ8 longitudinal wave probe to carry out UT on the end face of bolt nut.Cracks above 1mm of bolt thread can be found,and good detection results are obtained.
Ultrasonic testingMagnetic pole boltCrack detection
NETL
NSTL
万方数据
维普
