| 简介 |
Although anisotropic rare earth bonded magnets have superior magnetic properties to isotropic bonded magnets, there are currently issues with temperature properties, corrosion resistance, and magnet costs, and mass production is not widespread. Meanwhile, although methods are available for recycling sintered magnet scrap, such as dissolving and alloying scrap to obtain magnet alloys, and using oxide reduction, separation of SmCo and Nd magnets is unavoidable, and scrap must first be returned to a rare earth oxide state. A low-cost, highly-efficient recycling method has currently not been found. The present invention proposes a novel anisotropic rare earth bonded and a production method therefor that utilize this sintered magnet scrap to produce magnets that are superior to commercially-available isotropic bonded magnets, and that are easy on the environment due to energy saving and resource conservation. Anisotropic rare earth bonded magnets are produced by means of crushing, strain relief annealing heat treatment, kneading, and magnetic field forming. |
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