3D Printing of Polymer Bonded Magnets

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3D printer can deliver polymer bonded NdFeB magnets with a specific complex shape.

Polymer bonded magnets enable the manufacturing of complex shapes and features by design flexibility regarding shape and magnetizing structure. Recently it was shown that an end-user 3D printer can be used to print polymer bonded NdFeB magnets with a specific complex shape [1]. By means of inverse stray field and topology optimization simulations, a specific external field of a magnetic system can be designed and manufactured instantly by the help of the additive manufacturing procedure [2, 3]. The combination of a single-unit manufacturing technology for bonded magnets with a simulation framework that can generate magnets with a tailored magnetic field is long-desired for magnetic sensing applications.

News suggested by: Martin Grönefeld (Magnetfabrik Bonn, Bonn, Germany).

More information and further reading:

[1] 3D print of polymer bonded rare-earth magnets, and 3D magnetic field scanning with an end-user 3D printer. Applied Physics Letters 109, 162401 (2016).
[2] 3D Printing of Polymer Bonded Rare-Earth Magnets With a Variable Magnetic Compound Density for a Predefined Stray Field. arXiv:1701.07703 (2017).
[3] Topology Optimized and 3D Printed Polymer Bonded Permanent Magnets for a Predefined External Field. arXiv:1702.01968 (2017).

See also: Big Area Additive Manufacturing of High Performance Bonded NdFeB Magnets. Scientific Reports 6 (2016). http://dx.doi.org/10.1038/srep36212

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