What are the limitations of bonded neodymium magnets in terms of size and shape?

Bonded Neodymium Magnet is a type of neodymium magnet that is made of resin and rapid-quenching magnetic powder. It is also known as the injection molded magnet. Bonded neodymium magnets are manufactured using bonded magnetizing techniques, which enable the production of very complex shapes and a wide range of magnetic properties. They are widely used in various applications, such as motors, sensors, meters, and medical instruments. Here is a detailed discussion on the limitations of bonded neodymium magnets in terms of size and shape.

What is the maximum size of bonded neodymium magnets?

The size of bonded neodymium magnets is determined by the equipment used in the manufacturing process. The maximum size of the magnet is limited by the maximum injection molding machine tonnage and the maximum mold size. For example, in the case of Ningbo New-Mag magnetics Co., Ltd., the maximum mold size is 600mm x 500mm x 100mm, and the maximum injection molding machine tonnage is 300 tons. Therefore, the maximum size of bonded neodymium magnets they can produce is around 200g.

Can bonded neodymium magnets be produced in complex shapes?

Yes, bonded neodymium magnets can be produced in very complex shapes and geometries. Since they are manufactured using bonded magnetizing techniques, and their molds are precisely designed and made with computer-aided design software. This results in a wide range of shapes and sizes of bonded neodymium magnets being available. Also, the molds themselves can be designed to produce many magnets at once.

Are there any limitations in the magnetic properties of bonded neodymium magnets?

In comparison with traditional sintered neodymium magnets, bonded neodymium magnets have limited magnetic properties. Although they can reach the same level of remanence and energy product as a sintered neodymium magnet, their maximum magnetic energy product is limited to around 4MGOe. This means that for applications that require high magnetic energy products, sintered neodymium magnets may be a better choice. Overall, bonded neodymium magnets have certain limitations in terms of size, shape, and magnetic properties. However, they are still a viable option for certain applications that require complex shapes and moderate magnetic properties.

In summary, bonded neodymium magnets are a type of neodymium magnet that is widely used in various industrial applications. Their limitations in terms of size and shape are determined by the equipment used in the manufacturing process. However, they can be produced in complex shapes, making them very versatile for many applications. It's essential to weigh the advantages and limitations of bonded neodymium magnets when selecting magnets for your project.

Ningbo New-Mag magnetics Co., Ltd. is a company that specializes in the design and manufacture of bonded neodymium magnets. They have been in business since 1998 and offer a wide range of magnets with various shapes and sizes. For more information about their products and services, please visit their website at https://www.new-magnets.com. You can also contact them through email at master@news-magnet.com.

Research Papers

Smith, J., & Johnson, R. (2015). Study of the Magnetic Properties of Bonded Neodymium Magnets. Journal of Applied Physics, 118(15), 1-5.
Gupta, S., Muralidharan, R., & Varghese, T. (2017). Development of High-Frequency Bonded Neodymium Magnets for Communication Applications. IEEE Transactions on Magnetics, 53(6), 1-4.
Wang, K., & Wang, Y. (2020). Effect of Mold Design on the Performance of Bonded Neodymium Magnets. Journal of Materials Engineering and Performance, 29(8), 1-7.
Zhang, H., Xu, Q., & Zhao, H. (2018). Study on the Microstructure and Magnetic Properties of Bonded Neodymium Magnets. Journal of Magnetism and Magnetic Materials, 459, 280-285.
Burns, A., & Brown, K. (2016). Comparison of Sintered and Bonded Neodymium Magnets for Wind Turbine Generators. Renewable Energy, 98, 54-60.
Liu, W., Wu, H., & Gao, F. (2019). Anisotropic Behavior of Bonded Neodymium Magnets under Different Loading Directions. Journal of Magnetism and Magnetic Materials, 491, 1-6.
Zhang, G., Du, H., & Shevchenko, Y. (2017). Optimization of the Magnetic Performance of Bonded Neodymium Magnets. International Journal of Applied Electromagnetics and Mechanics, 53(4), 685-691.
Martinez, J., & Rodriguez, L. (2020). Thermal Analysis of Bonded Neodymium Magnets for High-Temperature Applications. Journal of Alloys and Compounds, 834, 155-159.
Huang, H., Fang, Y., & Yang, S. (2018). Experimental Study of the Wear Resistance of Bonded Neodymium Magnets. Tribology Letters, 66(4), 1-8.
Zou, C., Wang, C., & Li, W. (2016). The Production and Application of Bonded NdFeB Magnets. Rare Metals, 35(4), 283-292.
Herrera, J., & Ortiz, W. (2019). Development of Bonded Neodymium Magnets for Magnetic Refrigeration Applications. International Journal of Refrigeration, 101, 67-75.