China permanent magnet manufacturer:

How to detect NdFeB magnets?

Although the product quality is not detected, it is made, but ask which company has no detection link, so the detection link of magnet is also essential.

The figure below shows the magnetic comprehensive tester

1458783810145938 - How to detect NdFeB magnets?

Only when the product is tested, can we know whether the product is qualified or not. In this way, we can know whether there will be problems in the process of production. In this way, we can adjust the processing method in time. Therefore, the product testing is indispensable.

What about the detection of rare earth NdFeB magnets?

Some customers before custom-made magnets, because they are not clear about their company’s magnet performance, surface Gauss, magnetization direction, brand and so on, if they want to make qualified samples, they need to send samples to the magnet manufacturer for testing.
Micrometer, vernier caliper, Gauss meter, fluxmeter, film thickness meter and other measuring tools are generally used in the detection of finished NdFeB magnets.
The film thickness meter mainly measures the plating layer thickness of NdFeB magnet. The film thickness meter can effectively monitor the plating quality and flexibly adjust the magnet plating.
Micrometer and vernier caliper are mainly used to measure the tolerance of NdFeB magnet. The unit is mm.
Gauss meter is mainly used to measure the magnetic force of a point on the surface of the magnet, unit Gauss. Because the magnetic force of each point on the surface of the magnet is different, and the edge magnetic force is higher than that of the center point, the measured data error is too large.
Fluxmeter mainly measures the magnetic force of one side of NdFeB magnet, in Weber WB. Compared with Gauss meter, fluxmeter measures more objective and accurate data.
General magnet manufacturers will choose fluxmeter to test finished NdFeB magnets. It is suggested that customers should also use fluxmeter when inspecting NdFeB magnets. On the one hand, it is more convenient to measure, on the other hand, it is unified with the testing standards of magnet manufacturers. The test data is objective, accurate, effective and timely to monitor the quality of magnets.



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