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Guide for magnetic distribution meter

Guide for magnetic distribution meter

The multi-pole magnetic ring magnetic field distribution measuring instrument (or magnetic wave measuring instrument) is an indispensable tool for the production of multi-pole magnetic rings or rotors in the motor industry and the quality inspection of magnetic rings in related motor enterprises. As early as the late 1990 s, the relevant patent design report of this equipment was carried out in China (Shandong native: Lao Meng). In the past 10 years, about 10 domestic enterprises have begun to produce the functional products. Through the understanding of foreign related products, it is found that there are not many manufacturers of such measuring devices abroad, mainly less than 10 enterprises in Japan, South Korea and Germany. Why do users have urgent needs of products, compared with other measuring equipment related technical content is not high, but can not be well accepted by users? Where are the uncertainties? I through the understanding of users in the same industry, and the use of the same magnetic ring in different manufacturers of magnetic field distribution measuring instruments to test the same product, found some problems, here to share with the industry, hoping to help everyone.

25

2022

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06

Comparison of two methods for testing the magnetic properties of NdFeB (brand N42UH)

Comparison of two methods for testing the magnetic properties of NdFeB (brand N42UH)

Recently, some enterprises have proposed to measure the magnetization curve of rare earth permanent magnet materials. As we all know, with reference to the existing international or national standards, there is no requirement to test the magnetization curve of permanent magnetic materials (soft magnetic materials need to test the magnetization curve). Most of the permanent magnetic materials use saturation magnetization, especially rare earth permanent magnets, which mostly use solenoid pulse magnetization. Comparison of the magnetic properties of NdFeB tested by two methods (grade N42UH) The original data obtained from the test are plotted as follows:

22

2022

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04

The working principle and performance of electromagnet

The working principle and performance of electromagnet

Electromagnet is an active part that converts electrical energy into magnetic energy and further into mechanical energy. When using an electromagnet, the temperature rise of the coil will lead to a decrease in the output capacity, so the heat factor must be considered. The heat dissipation capacity of the electromagnet is related to the volume and structure

20

2022

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04

Precautions for using Gaussmeter

Precautions for using Gaussmeter

Gaussmeter is a special instrument for detecting the magnetic induction intensity of magnets, which can measure the surface magnetism of permanent magnet materials, the magnetic circuit gap magnetic field and the space magnetic field generated by the magnetic field generation device. Gaussiometer as a more precise instrument, in the use of the process should pay attention to the following matters

10

2022

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01

Temperature Test and Assessment of DC Magnetic Properties of Several Kinds of Metal Soft Magnetic Materials

Temperature Test and Assessment of DC Magnetic Properties of Several Kinds of Metal Soft Magnetic Materials

The following is a comparison and assessment of DC magnetic properties of several kinds of metal soft magnetic materials: soft magnetic alloy 1J79 material, soft magnetic alloy 1J50 material, soft magnetic alloy 1J22 material, soft magnetic alloy DT4E, iron silicon alloy FeSi material

06

2022

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01

Measurement of DC Magnetic Properties of Permalloy 1J85 at Different Temperatures

Measurement of DC Magnetic Properties of Permalloy 1J85 at Different Temperatures

When permalloy materials (e.g. 1J76, 1J79, 1J85) are used as shielding materials, the key assessment is the initial permeability ui(H = 0.08A/m) and the maximum permeability um of the materials. to test the initial permeability of accurate materials, two conditions are required: 1. Demagnetization is required to reach the Rayleigh area; 2. The DC curve of the material is obtained by impact measurement to ensure the accuracy and current nature of the test results. The DC magnetic performance device for FE-2100SD soft magnetic materials meets the requirements of the above two conditions in terms of hardware resolution and test method. The demagnetization control meets the minimum current zero uncertainty of 2uA (demagnetization frequency of 2Hz), and the minimum controllable effective value of H during the test reaches 0.0002A/m. At the same time, the technology "Closed Circuit DC Magnetic Performance Measurement Method for Soft Magnetic Materials" (2020112300784240) invented by our company is adopted, very good to meet the needs of permalloy testing.

27

2021

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12

Design and Application of Gradient Electromagnet

Design and Application of Gradient Electromagnet

With a solid magnetic field design foundation, Hunan Yongyi Technology Co., Ltd. has successively developed the use of effective space to manufacture large uniform area space magnetic field coils, high gradient magnetorheological large polished electromagnets, high-strength high-uniform area direct electromagnets, AC/DC superimposed magnetic field coils and multi-degree-of-freedom gradient magnetic fields. The products are adopted by many domestic scientific research institutes and exported to the United States, Australia, Hong Kong and other scientific research institutions. Involving military experiments, multi-faceted polishing of mobile phone aluminum alloy shells, magnetic material orientation and testing, magnetic powder imaging, medical surgery and medical experiments, it is a domestic professional magnetic measurement equipment and magnetic field design and manufacturing supplier.

25

2021

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12

Introduction of Micro Magnetic Steel Magnetic Moment Measuring Instrument

Introduction of Micro Magnetic Steel Magnetic Moment Measuring Instrument

FE-2100MQ miniature magnetic moment measuring instrument belongs to FE-2100MQ rare earth permanent magnet material quality testing device plus miniature Helmholtz coil. At present, rare earth material manufacturers measure the quality of rare earth materials by using flux meters and Helmholtz coils to measure the magnetic moment, remanence, coercivity and maximum magnetic energy product of rare earth and permanent magnets. It can greatly save the measurement time of the quality data of the magnetic material, and is completely suitable for the rough classification and screening of a variety of magnetic materials.

02

2021

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03

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