大型石化厂压力容器设备,大多数采用的材料是铁磁性材料,所以在定期检验采用的几种无损检测方法中,运用最多的是磁粉检测。设备运行产生的缺陷多数首先在表面、近表面反映出来,而磁粉检测方法的优势恰恰是容易发现这些缺陷,且操作简单、效率高、成本低,显示直观,因此该方法就成为容器定检中首选的检测方法。磁粉检测的准确性直接影响容器定检的可靠性和设备使用的安全性。 Large-scale petrochemical plant pressure vessel equipment, most of the materials used are ferromagnetic materials, so in the regular inspection of several non-destructive testing methods used, the most widely used magnetic particle testing. Most of the defects caused by the operation of the equipment are firstly reflected on the surface and the near surface. The advantage of the magnetic particle detection method is that these defects are easy to be found, and the operation is simple, efficient, low cost and intuitive. Therefore, The preferred method of detection. The accuracy of magnetic particle testing directly affects the reliability of container inspection and equipment safety.