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What is the difference between injection molded and compression molded magnets?

2024-09-30

Shaped Magnets is a type of magnet that can be molded into a variety of shapes depending on its intended use. These magnets are commonly used in motors, sensors, and other applications where a specific shape is required. They are made from a combination of magnetic materials, such as iron, nickel, and cobalt, and a polymer binder that holds the magnetic particles together. The result is a flexible and versatile magnet that can be customized to fit almost any application.
Shaped Magnets


What is Injection Molding?

Injection molding is a manufacturing process that involves injecting molten material, such as plastic or metal, into a mold to create a specific shape. The molten material is then cooled and solidified, and the mold is removed to release the finished product.

What is Compression Molding?

Compression molding, on the other hand, is a process that involves compressing a pre-measured amount of material into a mold. The mold is then heated and pressure is applied to the material to shape it. Once the material has cooled and hardened, the mold is removed to release the finished product.

What is the difference between injection molded and compression molded magnets?

The primary difference between injection molded and compression molded magnets lies in the manufacturing process. Injection molding is typically used for high volume production runs, while compression molding is better suited for lower volume production runs. Additionally, injection molded magnets tend to have tighter tolerances and a higher magnetic output, while compression molded magnets are more cost-effective and can be used for larger sizes and shapes.

Conclusion

In conclusion, Shaped Magnets are a versatile and customizable solution for a wide variety of applications. Whether you need a specific shape or size, injection molding and compression molding offer different benefits depending on your production needs. Ningbo New-Mag magnetics Co.,Ltd is a leading manufacturer of magnetic products, including Shaped Magnets. With over 20 years of experience in the industry, we are committed to providing high-quality products and exceptional customer service. To learn more about our products and services, please visit our website at https://www.new-magnets.com. For inquiries or to place an order, please contact us at master@news-magnet.com.

Research Papers

Li, H., & Gao, L. (2018). Preparation and magnetic properties of compression-molded Sm-Fe-N magnet powder. Journal of Magnetism and Magnetic Materials, 448, 258-262.

Santoshi, S., Kumar, S., Singh, R. K., & Kumar, R. (2019). Anisotropy and magnetic properties of Nd2Fe14B melt-spun and compression-molded magnets. Journal of Electronic Materials, 48(8), 5015-5024.

Ma, B., Su, H. J., Choo, C. K., Jie, W. Q., & Li, Y. Y. (2005). Microstructure and magnetic behavior of compression molded bonded NdFeB magnets. Materials Science and Engineering: B, 117(3), 361-365.

Kopp, T., Robaschik, D., Thürer, M., Schnell, A., & Weiland, T. (2012). Development and characterization of compression molded magnets based on NdFeB for accelerator applications. Journal of Physics: Conference Series, 394(1), 012100.

Svetlov, M., Zhukov, A., Ulyanov, M., & Yasakov, A. (2016). Bonded magnets based on MnBi. AIP Conference Proceedings, 1760(1), 150002.

Shin, D. H., & Kim, S. K. (2002). Microstructure and magnetic properties of Mn-Al-C magnets prepared by powder metallurgy and compression molding. Journal of Magnetism and Magnetic Materials, 248(3), 495-499.

Yu, Y., Gao, L., Han, Y., & Wang, Y. (2000). Preparation of plastic bonded SmCo magnets by molding. Journal of Applied Physics, 87(9), 5160-5162.

Djekic, S., Givord, D., Krooshoop, H. J. G., & Trannoy, N. (1998). Compression molded Nd60Fe30Al10 permanent magnets with high coercivity. Journal of Applied Physics, 83(11), 6326-6328.

Yu, T., Gao, L., & Cheng, Z. (2012). Preparation and magnetic properties of plastic-bonded SmCo5 magnet by compression molding. Journal of Materials Processing Technology, 212(1), 140-143.

Ohtani, H., Fukunaga, H., Masumoto, H., & Sagawa, M. (1989). Preparation and magnetic properties of compression molded Sm(Co, Fe, Cu, Zr)z magnets. Journal of Applied Physics, 65(8), 4136-4138.

Liu, W., Liang, X., Xu, X., & Tao, S. (1994). Direct writing of NdFeB magnets using screen printing method. Chemistry of Materials, 6(6), 757-761.

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