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Preparation method of neodymium iron boron alloy powder

A technology of neodymium iron boron and alloy powder, which is applied in the direction of magnetic materials, inorganic materials, electrical components, etc., can solve the problems of low output, explosion, combustion, etc., and achieve the effect of uniform particle size and uniform structure

Inactive Publication Date: 2013-02-06
张作州
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The pulverization of NdFeB alloy, due to its own characteristics, the pulverization of praseodymium, neodymium and dysprosium alloy cannot be realized under normal conditions, because the technical properties of NdFeB alloy make it impossible to store under normal conditions Yes, the collision between NdFeB alloy and metal will cause explosion or combustion during the crushing process. The current domestic manufacturing method is to put a small amount of NdFeB in a ball mill for grinding, and protect it with inert gas to prevent explosion. The above process The produced praseodymium neodymium dysprosium powder has uneven fineness and low yield

Method used

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Embodiment Construction

[0012] The present invention will be specifically described below in conjunction with specific embodiments.

[0013] The neodymium iron boron alloy flakes are loaded from the feed port, the material enters the vortex pulverizer through the vibrating elevator, and the airflow of the vortex pulverizer and the auxiliary equipment of the vortex pulverizer form a uniform high particle size below 500 mesh. The fineness of the spherical powder is recovered after one or two times of air sorting with qualified meshes. The unqualified powder will be sent back to the main engine for further processing. The entire system is filled with nitrogen or argon during operation. Play a protective role.

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Abstract

The invention discloses a preparation method of neodymium iron boron alloy powder, and the preparation method comprises the following steps of placing the neodymium iron boron alloy into a smashing machine to be smashed in a gradient way; separating the gradiently treated neodymium iron boron alloy; and recycling the treated neodymium iron boron alloy powder through a recycling device to obtain neodymium iron boron alloy powder of different meshes. Through the process of the technical scheme, explosion resistance and oxidization resistance can be realized.

Description

Technical field [0001] The invention relates to a preparation process of a neodymium iron boron alloy material, in particular to an explosion-proof and anti-oxidation preparation method. Background technique [0002] The crushing process of NdFeB alloy, due to its own characteristics, the crushing process of praseodymium, neodymium, dysprosium alloy can not be achieved under normal conditions, because of the technical nature of NdFeB alloy, it cannot be stored under normal conditions Yes, during the crushing process, the collision of NdFeB alloy with metal will cause explosion or combustion. At present, the domestic manufacturing method is to put a small amount of NdFeB in a ball mill for grinding processing, and protect it with inert gas to prevent explosion. The above process The produced praseodymium, neodymium, dysprosium powder has uneven fineness and low output. Summary of the invention [0003] According to the above-mentioned shortcomings, the present invention provides a...

Claims

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Application Information

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IPC IPC(8): B22F9/04C22C38/00H01F1/057H01F1/06
Inventor 张作州
Owner 张作州