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Method for manufacturing permanent magnet

A technology of permanent magnet and additive manufacturing, applied in the field of manufacturing permanent magnets

Pending Publication Date: 2022-05-27
北美EOS股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, to date, it appears that the foregoing has not been successfully adapted industrially to processes using Selective Laser Sintering (SLS) or similar systems in which powders or other fluid materials are the build medium

Method used

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  • Method for manufacturing permanent magnet
  • Method for manufacturing permanent magnet
  • Method for manufacturing permanent magnet

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Embodiment Construction

[0027] Although the invention is susceptible to many different forms of embodiment, preferred embodiments of the invention are shown in the drawings and will be described in detail herein, with the understanding that the invention should be considered as exemplifying the principles of the invention, It is not intended to limit the broad aspects of the invention to the illustrated embodiments. As used herein, the term "present invention" is not intended to limit the scope of the claimed invention, but is a term used to discuss exemplary embodiments of the present invention for purposes of explanation only.

[0028] figure 1Powder composition 1 according to an embodiment of the present invention is illustrated. The figure shows a mixture or dry blend of ferromagnetic particles 11 and thermoplastic polymer particles 12 . Powder mixtures can also be obtained by melt compounding ferromagnetic metal particles with thermoplastic polymer particles to make composite pellets, which ar...

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Abstract

A method of manufacturing a permanent magnet includes: providing a powder composition, a first portion of the powder composition including ferromagnetic metal particles, a second portion of the powder composition including thermoplastic polymer particles; using the powder composition in a powder bed-based additive manufacturing process to form a part comprising ferromagnetic metal particles embedded in a molten thermoplastic polymer body; and subsequently imparting magnetism on the constructed part by arranging the completed part in a magnetic field.

Description

technical field [0001] The present invention relates to the field of Additive Manufacture (AM) using build media that are applied in successive layers and cured at selected points or areas according to the cross-section of the object to be built, and more particularly to particularly Media suitable for making objects to have magnetic characteristics, and still more particularly relate to making permanent magnets, powder compositions for use in the method, and permanent magnets. Background technique [0002] A permanent magnet is a magnet that exhibits a permanent magnetic field, and includes ferromagnetic materials (such as ferrites, iron alloys, or rare earth alloys, to name a few). Large permanent magnets can be used in electric machines, such as generators, and can be manufactured by casting. Smaller permanent magnets can be used for various purposes and can be formed by milling. Alternatively, the ferromagnetic metal may be provided in small particle form, and a mixtur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/153B22F1/12B33Y10/00B33Y70/10C22C38/00H01F1/057H01F7/02
CPCH01F41/0253Y02P10/25B22F10/16B33Y80/00B33Y10/00C22C2202/02B33Y30/00B22F1/05B22F12/222B33Y70/10B22F12/33B22F2998/10B22F3/10B22F2999/00B22F2202/05H01F1/06
Inventor 理查德·B·布斯
Owner 北美EOS股份有限公司