Apparatus and method for near-net forming processing of anisotropic NdFeB magnetic ring
A near-final forming and processing device technology, which is applied in the manufacture of magnetic objects, magnetic materials, inductors/transformers/magnets, etc., can solve problems such as easy cracking and uneven magnetic properties of magnetic rings, and improve the forming rate and production efficiency Effect
Active Publication Date: 2018-05-01
锦州富世博新材料研究有限公司
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Problems solved by technology
In order to obtain a magnetic ring with excellent performance and improve production efficiency, it is necessary to solve the problems that the magnet is easy to crack during the reverse extrusion process and the magnetic properties of each part of the magnetic ring are uneven.
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Embodiment 2
[0030]A near-finish molding processing device for anisotropic NdFeB magnetic rings is characterized in that it includes a frame 22, and the lower end of the frame 22 is equipped with a water-cooled ejector pin 21, and the upper end of the frame 22 is equipped with a pressure ring Pneumatic assembly 2, and the upper end of frame 22 is equipped with upper water-cooled mandrel 1, the outer end of lower water-cooled mandrel 21 is sleeved with water-cooled base 20, and the upper end of water-cooled base 20 is provided with concentric formwork bracket 18, mold The frame bracket 18 and the water-cooled base 20 are socketed through the mold frame pressure sleeve 19, and the upper end of the mold frame bracket 18 is plugged with a mold frame 17, and the upper end of the mold frame 17 is equipped with a mold base 12, and the mold base 12 The upper end of the die holder 11 is equipped with a die 10, the rear end of the die 10 is connected with a vacuum pump, and the outer end of the press...
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The invention discloses a near-shape formation processing device of an anisotropic Nd-Fe-B magnetic ring. The near-shape formation processing device comprises a rack, wherein a lower water-cooling top rod is arranged at a lower end of the rack, a press ring pneumatic assembly is arranged at an upper end of the rack, an upper water-cooling top rod is arranged at the upper end of the rack, a water-cooling base sleeves an outer end of the lower water-cooling top rod, a concentric framework bracket is arranged at an upper end of the water-cooling base, the framework bracket and the water-cooling base are sleeved by a framework press sleeve, and a framework is inserted into an upper end of the framework bracket. The near-shape formation processing device has the advantages that only two processes of forming a magnetic post by hot-pressing and forming a cup-shaped magnet by forward extrusion are performed during the preparation process, the top of the magnet provides a certain reverse pressure all the time during the forward extrusion process of the magnet so as to ensure smooth formation of a workpiece, thus, the formation rate and the production efficiency of the magnetic ring are greatly improved, and a solid foundation is laid for industrialization of a near-shape formation process of the anisotropic Nd-Fe-B magnetic ring.
Description
technical field [0001] The invention relates to the technical field of rare earth permanent magnet materials, in particular to a near-net forming processing device and method for anisotropic NdFeB magnetic rings. Background technique [0002] High-density anisotropic magnets prepared by hot pressing / hot deformation process are an important branch of rare earth permanent magnet industry. Since the hot-pressed magnet overcomes the limitation of the preparation process of the sintered magnetic ring from the source, it can prepare a complete magnetic ring with a high aspect ratio, and has the characteristics of a short process and a reduction in the weight of the motor. It is a very promising development. Near net shape preparation technology. The high-performance magnetic ring prepared by this technology is more and more widely used in automotive EPS motors, brushless motors, voice coil motors, and air-conditioning IPM motors. [0003] The hot pressing / hot deformation method ...
Claims
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IPC IPC(8): H01F41/02H01F1/057
CPCH01F1/0576H01F41/0266
Inventor 付莹于占东张蓉瑜马征张鹏
Owner 锦州富世博新材料研究有限公司