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Flexible neodymium iron boron material and preparation method thereof

A NdFeB, flexible technology, applied in the direction of magnetic materials, inductors/transformers/magnets manufacturing, magnetic objects, etc., can solve the problems of low stability of NdFeB, difficult molding and demoulding, complex preparation process, etc. Achieve the effect of reducing manpower input, equipment input and energy cost, easy forming and demoulding, and ensuring stability

Inactive Publication Date: 2019-07-16
温州市享通塑磁科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When producing magnets from these materials, try to achieve the theoretically smallest possible particle size in the finished magnet, the preparation process is complicated, the cost is high, and the stability of the NdFeB produced is not high, the heat resistance is average, and it is not easy to form and remove. mold

Method used

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Embodiment Construction

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0017] The invention is described as follows:

[0018] A method for preparing a flexible NdFeB material, comprising the steps of:

[0019] Step 1: Magnetic powder particle size treatment: use the NdFeB magnetic powder special grinding machine to grind the NdFeB magnetic powder until all the NdFeB magnetic powder passes through the 100-mesh sieve;

[0020] Step 2: particle size processing of auxiliary materials: extract rubber, resin, nylon 6 and auxiliary agents according to mass percentage, a...

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Abstract

The invention provides a preparation method of a flexible neodymium iron boron material and a preparation method thereof. The preparation method comprises the following steps: step one, magnetic powder granularity treatment: grinding neodymium iron boron magnetic powder until the neodymium iron boron magnetic powder passes through 100-mesh screen cloth completely by a special neodymium iron boronmagnetic powder mill used for neodymium iron boron magnetic powder; step two, ingredient granularity treatment: extracting rubber, resin, nylon 6 and accessory ingredients in percentages by weight, and carrying out proportioning; step three, material mixing fusion: mixing the magnetic powder treated in the step one and the ingredients treated in the step two in an internal mixer, and heating for fusion; and step four, forming: feeding the mixed materials into a calender, a molding press and an injection molding machine, and forming in a magnetic field so as to obtain an finished product.

Description

technical field [0001] The invention relates to a flexible NdFeB material and a preparation method thereof. Background technique [0002] A magnet that can maintain its magnetism for a long time is called a permanent magnet. Such as natural magnets (magnetite) and artificial magnets (alnico) and so on. In addition to permanent magnets, there are also electromagnets that need to be energized to be magnetic. Permanent magnets are also called hard magnets, which are not easily demagnetized or magnetized. However, if the permanent magnet is heated above the Curie temperature, or placed in an environment with a reverse high magnetic field strength, its magnetism will also decrease or disappear. Some magnets are brittle and may crack at high temperatures. The maximum operating temperature of alnico magnets exceeds 540°C (1,000°F), samarium cobalt magnets and ferrites are about 300°C (570°F), neodymium magnets and soft magnets are about 140°C (280°F), However, the actual value...

Claims

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Application Information

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IPC IPC(8): H01F1/057H01F41/02
CPCH01F1/0576H01F41/0266
Inventor 陈孝善黎云峰张兵辉李祖坚
Owner 温州市享通塑磁科技有限公司
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