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Rod Neodymium Magnets Process

Jul. 20, 2019

1. Molding orientation

Process Description: The role of orientation is to make the easy magnetization direction c-axis of chaotically oriented powder particles turn in the same direction, so as to obtain the maximum remanence. The main purpose of the molding is to compress the powder into a shape and size while maintaining the degree of grain orientation obtained in the magnetic field orientation as much as possible. We design a shape magnetic field press and an isostatic press for secondary molding. For special-shaped magnets, special mold tooling is used for direct molding. The sintered magnets can be put into use only with a slight surface treatment, which greatly saves Rod Neodymium Magnets materials. And subsequent processing costs.

Process equipment: magnetic field press, isostatic press

2. Sintering

Process Description: Sintering is a series of physicochemical changes that occur at high temperatures. It is a simple and inexpensive way to change the microstructure of materials to improve the magnetic properties of materials. Sintering is the final forming process of the material and has a very important influence on the density and microstructure of the magnet.

Process equipment: vacuum sintering furnace

3. Machining

Process Description: NdFeB magnets obtained after sintering are blanks that require further machining to obtain products of various sizes, sizes and shapes. NdFeB magnets are relatively brittle and have poor mechanical properties. Generally, they can only be used for grinding and cutting.

Process equipment: surface grinder, double grinder, chamfering machine

4. Surface treatment

Process Description: Surface treatment of various shapes of rare earth permanent magnets, such as electrophoresis, galvanizing, nickel, nickel-copper-nickel and phosphating, to ensure the appearance and corrosion resistance of the product.

5. Finished Sensors Rod Neodymium Magnets inspection and packaging

Process Description: The product's various magnetic properties, corrosion resistance, high temperature performance, etc. are tested and packaged to meet the various needs of customers.

Rod Neodymium Magnets Process

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