Magnetic powder clutch leakage detecting method
Release Date:30/08/2019
A method of detecting magnetic flux leakage of a magnetic powder clutch. Magnetic powder (granular magnetic powder) is among the materials necessary for the magnetic powder clutch and the magnetic powder brake. The application of magnetic powder is very extensive. But how to detect magnetic powder is something that many users have not touched.Magnetic particle detection is extremely sensitive to the detection of surface defects of the workpiece,but if the degree of surface defects on the workpiece is higher, the detection sensitivity will drop rapidly to zero. When the material or workpiece is magnetized, if there are cracks, cracks and other defects on the surface or surrounding surface of the workpiece, there will be magnetic leakage in the defective place. The magnetic powder will attract and aggregate the magnetic powder applied during the detection process to form the defect display.
In addition, after the magnetic powdered parts, not all defects can produce magnetic leakage.The production of magnetic flux leakage is related to the shape of the defect, the surface distance of the defect, and the relative position of the defect and the magnetic field line. The material of the workpiece and the roughness of the surface of the workpiece also cause magnetic leakage. At the same time,the above factors will also affect or reduce the accuracy of magnetic particle detection.The magnetic powder clutch and brake can also be combined with the factors reviewed above to check whether the magnetic powder is leaky. If there is magnetic leakage will affect the performance and torque of the magnetic powder clutch.