Rare-earth alloy permanent magnet material preparation device and technique

A technology of permanent magnet materials and rare earth alloys, applied in the direction of magnetic materials, magnetic objects, electrical components, etc., can solve the problems affecting the quality of mass production, low working temperature stability, segregation of alloy ingot materials, etc., and achieve welding performance and resistance The effect of improving corrosion performance, improving current utilization rate, and improving actual coercive force

Inactive Publication Date: 2015-01-28
南京萨伯工业设计研究院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the traditional process of preparing rare earth alloy permanent magnet materials is to obtain the rare earth metal oxides in the front stage through various processes such as proportioning and smelting in the subsequent stage. However, there are many human factors in the production process, which are difficult to control, which in turn affects the batch size. quality of production
Taking NdFeB as an example, the praseodymium, neodymium, iron, boron and other components separated by extraction are mixed and then added to a vacuum melting furnace for melting, and alloy ingots are obtained after melting. Affected by factors such as the uniformity of the previous mixing and the control of the time interval and amount

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  • Rare-earth alloy permanent magnet material preparation device and technique

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Comparison scheme
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Example Embodiment

[0046] Example 1

[0047] A rare-earth alloy permanent magnet material, which is prepared according to the following table 1-1:

[0048] Table 1-1 Formulation of Example 1

[0049] Component

[0050] The preparation process of the above-mentioned rare earth alloy permanent magnet material of this embodiment is as follows:

[0051] In the rare earth metal treatment tank 1, the rare earth raw materials are pretreated, acid hydrolyzed, filtered, and extracted to obtain neodymium chloride, praseodymium chloride, dysprosium chloride and scandium chloride. According to the rare earth group of rare earth alloy permanent magnet materials, The proportion and proportion requirements are prepared into the chloride complex solution in the preparation tank 2, and the chloride complex solution is settled to obtain the Nd Pr·Dy·Sc mixed complex, and then the Nd Pr·Dy·Sc mixed complex is mixed with others The allocated raw materials are put into the electrolytic furnace 6 for smelting to form a m...

Example Embodiment

[0055] Example 2

[0056] A rare-earth alloy permanent magnet material, which is prepared according to the following table 2-1:

[0057] Table 2-1 Formulation of Example 2

[0058] Component

[0059] The preparation process of the above-mentioned rare earth alloy permanent magnet material of this embodiment is as follows:

[0060] In the rare earth metal treatment tank 1, the rare earth raw materials are pretreated, acid hydrolyzed, filtered, and extracted to obtain neodymium chloride, praseodymium chloride, dysprosium chloride and scandium chloride. According to the rare earth group of rare earth alloy permanent magnet materials, The proportion and proportion requirements are prepared into the chloride complex solution in the preparation tank 2, and the chloride complex solution is settled to obtain the Nd Pr·Dy·Sc mixed complex, and then the Nd Pr·Dy·Sc mixed complex is mixed with others The allocated raw materials are put into the electrolysis furnace 6 for smelting to form a m...

Example Embodiment

[0063] Example 3

[0064] A rare-earth alloy permanent magnet material, which is prepared according to the following table 3-1:

[0065] Table 3-1 Example 3 formula table

[0066] Component

[0067] Mass percentage / %

[0068] The preparation process of the above-mentioned rare earth alloy permanent magnet material of this embodiment is as follows:

[0069] In the rare earth metal treatment tank 1, the rare earth raw materials are pretreated, acid hydrolyzed, filtered, and extracted to obtain neodymium chloride, praseodymium chloride, dysprosium chloride and scandium chloride. According to the rare earth group of rare earth alloy permanent magnet materials, The proportion and proportion requirements are prepared into the chloride complex solution in the preparation tank 2, and the chloride complex solution is settled to obtain the Nd Pr·Dy·Sc mixed complex, and then the Nd Pr·Dy·Sc mixed complex is mixed with others The allocated raw materials are put into the electrolytic furna...

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Abstract

A rare-earth alloy permanent magnet material preparation device comprises a raw material treatment portion, a precipitation tank, an electrolytic furnace, a grinding mechanism, a stamping mechanism and a vacuum sintering furnace. The raw material treatment portion comprises a rare-earth metal treatment tank and a blending tank, a delivery pipe connected with the blending tank is arranged on the rear-earth metal treatment tank, the blending tank is connected with the precipitation tank through a complexing solution delivery pipe, the precipitation tank is connected with the electrolytic furnace, a feed inlet is arranged on one side of the electrolytic furnace, a casting chamber is arranged at the tail end of the electrolytic furnace and connected with a cooling chamber, the cooling chamber is connected with the grinding mechanism through a discharge pipe, and the grinding mechanism is connected with the stamping mechanism which is connected with the vacuum sintering furnace. The problem of segregation of alloy ingots is solved effectively, high temperature strength, structural stability, welding performance and corrosion resistance of the alloy ingots are improved beneficially due to addition of Sc, and the common electrolytic furnace can be used for smelting the alloy ingots by adopting mixture after Nd, Pr, Dy and Sc complexing.

Description

technical field [0001] The invention relates to the technical field of rare earth permanent magnet materials, in particular to a preparation device and a preparation process for rare earth alloy permanent magnet materials. Background technique [0002] Rare earth permanent magnet material is a kind of permanent magnet material with the highest comprehensive performance at present. , AlNiCo has superior performance; and due to the use of rare earth permanent magnet materials, it not only promotes the miniaturization and integration of permanent magnet devices, but also improves the performance of products. Scandium, as a transition group element and a rare earth element, is added to the alloy, which can not only significantly refine the grains of the as-cast alloy, increase the recrystallization temperature to improve the strength and toughness of the scandium alloy, but also significantly improve the weldability of the scandium alloy, Due to its heat resistance, corrosion r...

Claims

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Application Information

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IPC IPC(8): B22F3/16B22F1/00C25C3/34H01F1/053
Inventor 张祝
Owner 南京萨伯工业设计研究院有限公司
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