China permanent magnet manufacturer: www.rizinia.com

What are the appearance defects of NdFeB magnetic materials?

What are the appearance defects of NdFeB magnetic materials?

The appearance defects of NdFeB magnets are mainly produced in the production process. The common appearance defects are cracks, cracks, pits, falling corners, blisters, knife marks, sand holes, pockmarks and so on. In addition, it is possible that the plating layer on the surface of the magnet is not right, because most of the plating of the magnet manufacturers are external, and there may be some mistakes. When QC checks the incoming goods, they can see whether it is consistent with the requirements of their own company.
For example, the crack of magnet appears in sintering process, the corner and scratch appear in slicing or logistics process, while the sand hole and blister appear in electroplating process.

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