Super-Strength Rare Earth Magnet----Sintered NdFeB magnets, have the characteristics of :Coating is needed for NdFeB.Surface Treatment Method: Type Information Metallic Zinc, Nickel, Nickel+Nickel, Copper+Nickel, Nickel+Copper+Nickel,
Gold, Organic Epoxy, Nickel+Epoxy coating
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Ningbo Bestway Magnet Co.,Ltd has some customers, who request permanent magnets for undulator, like N50M neodymium arc magnets in large sizes, with cutted sides, Nickel coating, working temperature 80 ℃. Customers usually send us drawings with enough information. A few of them require spread of magnetization less than 0.5%.
Large Neodymium Magnets
What is “spread of magnetization”?
As for the spread of magnetization of large neodymium magnets, it can only be tested when the magnets are finished. The size is very large and we do not have magnets with similar size in stock, so we are not able to estimate the value. But we can assure that the magnets will be produced with China's highest technology and standard.
Ningbo Bestway Magnet Co.,Ltd can supply large neodymium magnets used in undulator, as per current production status, delivery time for 300pcs is about 50-60 working days. Recently, Nd raw material price is rising rapidly and tends to increase continuely, price validity is only 2-7days.
For some customers, the surface field is not good specification in their case, as the neodymium permanent magnet is large, and magnetization may be different in different points of it.