Sintering process for producing sintered neodymium-iron-boron magnet

A technology of NdFeB and magnets, which is applied in the direction of magnetic objects, magnetic materials, inductors/transformers/magnets, etc., can solve the problems of heat reduction, damage of NdFeB magnet blocks, and prolonged sintering time, so as to achieve full sintering , uniform heating, uniform heating effect

Active Publication Date: 2021-12-17
GANZHOU JUCI TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] However, there are some deficiencies in the existing method. When the NdFeB magnet block is sintered, the NdFeB magnet block is placed on the placement plate. Due to the distance between the heating element and the side walls of the NdFeB magnet block are not the same, which will lead to uneven heating intensity of each side wall of the NdFeB magnet block, and the heat on the side for carrying will be greatly reduced, which makes it impossible for the NdFeB magnet block to achieve all sides. The wall is evenly heated, which will lead to the problem of prolonged sintering time or insufficient sintering, and more seriously, it will cause the NdFeB magnet block to be destroyed during elongation

Method used

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  • Sintering process for producing sintered neodymium-iron-boron magnet
  • Sintering process for producing sintered neodymium-iron-boron magnet
  • Sintering process for producing sintered neodymium-iron-boron magnet

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Embodiment Construction

[0031] see Figure 1-8 , the present invention provides a technical solution: a sintering process for the production of sintered NdFeB magnets, the process includes the following steps:

[0032] Step 1: Place the NdFeB magnet raw material blocks that need to be sintered into the sintering device;

[0033] Step 2: The sintering device performs all-round sintering processing on the NdFeB magnet raw material blocks placed in it;

[0034] Step 3: The sintered NdFeB magnet raw material block can be directly taken out from the sintering device, which is convenient for the next processing operation.

[0035] Please refer to Figure 1-6, the sintering device includes a shell 1, and the shell 1 is provided with a bearing platform 2, the bearing platform 2 is used to place the NdFeB magnet raw material block, and the first clamping assembly is arranged above the bearing platform 2, Through the setting of the first clamping assembly, the NdFeB magnet raw material blocks placed on the ...

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Abstract

The invention discloses a sintering process for sintered neodymium-iron-boron magnet production in the technical field of neodymium-iron-boron magnet production. The process comprises the following steps that 1, neodymium-iron-boron magnet raw material blocks needing to be sintered are placed in a sintering device; 2, the sintering device conducts all-around sintering machining on the neodymium-iron-boron magnet raw material blocks placed in the sintering device; and 3, the sintered neodymium-iron-boron magnet raw material blocks can be directly taken out of the sintering device, and next-step machining operation can be conveniently carried out. The neodymium-iron-boron magnet blocks can be heated more uniformly, and sintering is more sufficient.

Description

technical field [0001] The invention relates to the technical field of NdFeB magnet production, in particular to a sintering process for the production of sintered NdFeB magnets. Background technique [0002] Neodymium magnets, also known as NdFeB magnets, are tetragonal crystals formed of neodymium, iron, and boron. In 1982, Masato Sagawa of Sumitomo Special Metals discovered neodymium magnets. The magnetic energy product of this magnet is greater than that of samarium-cobalt magnets. At that time, the material with the largest magnetic energy product in the world. Later, Sumitomo Special Metals successfully developed the powder metallurgy method, and General Motors successfully developed the spin spray melting method, which can prepare NdFeB magnets. NdFeB magnets are widely used in electronic products, such as hard disks, mobile phones, earphones, and battery-powered tools. [0003] The production of NdFeB magnets needs to go through many processes. Sintering is one of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F41/02H01F1/057
CPCH01F41/0253H01F1/0577H01F1/057
Inventor 丰光耀冯虎许韵霖
Owner GANZHOU JUCI TECH
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