Specific Magnetic Properties of Soft Magnetic Material Detection Based on Comparison Method

In order to overcome the insufficiency of the existing method in quality determination of soft magnetic material,which can only detect standard ring or rod-like samples,an experiment was designed to seek a palatable solution to the problem.For achieving the purpose of shaped quality detection,relevant tests were carried out by using different contrast methods to compare two special-shaped partsin coercive forces of differences between qualified and unqualified special-shaped parts on the 1J50 of soft magnetic material.Experimental results show that there is a clear difference comparison in the two curves which plus unqualified and qualified sample under magnetizing current of 450 or 500 mA and reverse current at about 7 or 5 mA,and this method can be used to distinguish qualified or unqualified samples.