磁粉检测在起重机吊钩检测中的应用

Magnetic Particle Testing on Crane Hook

作为起重机械的重要承载部件,吊钩的力学性能及安全性将直接关系到施工人员的财产及生命安全。因此,定期对在用吊钩进行无损检测是十分必要的。对于各类在用起重机吊钩的无损检测,目前通常采用的是磁粉检测,其原理是缺陷形成的漏磁场会吸附磁粉,从而形成磁痕来显示缺陷或裂纹的位置、大小、形状以及严重程度。该方法具有灵敏度高、检测方便、缺陷显示直观等诸多优点。文章分析了在用起重机吊钩潜存的缺陷,并详细介绍了磁粉检测在起重机吊钩检测上的应用。

Hook is an important load-bearing component of hoisting machinery. Its mechanical properties and safety is directly related to operator＇s life and property safety, Therefore, periodical nondestructive testing on the hook is very necessary. For nondestructive testing on crane hook, currently magnetic particle testing is generally used, that is, magnetic particle indication formed from leakage magnetic field absorbing magnetic powder is used to show the position, size, shape and severity of discontinuity. This method has many advantages, such as convenience for testing, high sensitivity and visual defect. The article analyzes latent defects of crane hook and introduces in detail the application of magnetic particle testing in the crane hook detection.