A NdFeB sintering furnace

Abstract

The invention discloses a neodymium-iron-boron sintering furnace, which comprises a body shell, a working cavity is arranged in the body shell, a supporting plate is arranged in the working cavity, a weighing chamber with an upward opening is arranged in the supporting plate, and the bottom wall of the weighing chamber is fixed. Equipped with a weighing device, the left and right side walls of the weighing chamber are symmetrically provided with a first limiting chute with an opening facing the center of the weighing chamber, and the side wall of the first limiting chute away from the center of the weighing chamber is provided with a first Motor, the end face of the first motor close to the center of the weighing chamber is provided with a first screw; the briquetting block provided by the present invention can compress the NdFeB in the sintering chamber, and provide a high-pressure environment during NdFeB sintering to make the NdFeB The combination density of iron and boron is higher, which improves the quality of NdFeB. The heat-insulating gate divides the NdFeB vacuum sintering furnace into a sintering area and a cooling area, so that when cooling NdFeB, it is only necessary to reduce the temperature of the cooling chamber. Energy is saved.

Description

technical field [0001] The invention relates to the technical field of sintering furnaces, in particular to an NdFeB sintering furnace. Background technique [0002] Sintered NdFeB permanent magnet material has very high magnetic properties, sintered NdFeB permanent magnet material has become an important supporting basic material for energy-saving technology, and has become an irreplaceable functional material for micro motors, based on its excellent magnetic properties In line with the needs of modern industrial development, sintered NdFeB has developed very rapidly. [0003] The sintering and cooling of the existing NdFeB vacuum sintering furnace are all in one space, resulting in the need to spend more energy to cool the sintering furnace itself when cooling the sintered material, so the cooling speed of the sintered material is very slow, affecting production efficiency, and No matter how much NdFeB needs to be sintered, it is sintered at a fixed temperature and time. ...

AI Technical Summary

Problems solved by technology

[0003] The sintering and cooling of the existing NdFeB vacuum sintering furnace are all in one space, resulting in the need to spend more energy to cool the sintering furnace itself when cooling the sintered material, so the cooling speed of the sintered material is very slow, affecting production efficiency, and No matter how much NdFeB needs to be sintered, it is sintered at a fixed temperature and time. When there is less sintered NdFeB, energy is wasted. When there is more sintered NdFeB, the NdFeB cannot meet the needs. The sintering requirements reduce the quality, and the NdFeB before sintering is pressed, and there are many gaps in the center. After sintering, the NdFeB density will be reduced and the quality will be reduced.

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