Abstract��When the magnetic induction intensity of the ferromagnetic metal reaches the 80% of the saturated value�� the surface defects of leakage magnetic field will increase rapidly. The sensitivity test piece on the surface of the tested metal only provides the tangential magnetic field strength of the metal surface�� and cannot be used to accurately verify whether the tested workpiece has been fully magnetized. Based on the magnetic field distribution characteristics of the circumferential magnetization method�� longitudinal magnetization method�� adjacent conductor method�� prods current flow method and magnetic yoke method�� in accordance with the ISO 9934 or ASTM E1444 standards�� the high sensitivity detection of the magnetizing current strength is realized by the calculation and analysis.
�²�������˾�У���־�������֣��� ��. �ŷۼ��Ż��������������[J]. �й������ڿ���, 2017, 35(5): 1-6.
CHEN Chang-hua��WANG Si-nan��TANG Zhi-gui��LIU Chang-le��YANG Cheng. Calculation and analysis of the magnetic current in the magnetic particle testing. Chinese Journal of Iron and Steel, 2017, 35(5): 1-6.
2017, Vol. 35 
