According to the characteristics of tubing-magnetic-leakage detection, tubing magnetization and residual magnet in it are analyzed.
根据油管漏磁无损检测的特点，分析了油管的磁化作用和其中存在的剩磁。
2
The residual magnetic devices can include a coil that receives a magnetization current to create a irreversible residual magnetic force between the core housing and the armature.