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Comparison of several domestic devices for measuring DC magnetic properties of soft magnetic materials
Release time:
2019-08-16
Source:
Www.fe2100.com
In order to promote the development of the company's soft magnetic material DC basic hysteresis loop project, it is necessary to carry out relevant tests and examinations on the existing devices of the current domestic testing institutions. From June 12 to 13, 2017, Hunan Yongyi Technology Co., Ltd. tested and compared the DC magnetic characteristics of several domestic samples of soft magnetic materials in Hangzhou.
In order to promote the development of the company's soft magnetic material DC basic hysteresis loop project, it is necessary to carry out relevant tests and examinations on the existing devices of the current domestic testing institutions. June 12-13, 2017,Hunan Yongyi Technology Co., Ltd.The DC magnetic properties of several domestic samples of soft magnetic materials were tested and compared in Hangzhou. I would like to thank Professor Liu Yapi of China University of Metrology, Professor Yu Zhishu of Zhejiang Institute of Metrology and Professor Che Shenglei of Zhejiang University of Technology for their convenience and warm reception for this horizontal comparison test!
1. test equipment for comparison
2. test samples:
1. Material: nanocrystalline, Le = 35.72mm, AE = 3.913mm, Ve = 0.1398cm
2、材料：DT4，Le=112.2mm，Ae=19.92 mm²，Ve=2.234 cm³
3. Material: MnZn ferrite, Le = 60.18mm, AE = 48.93 mm²,Ve = 2.944cm ³
4. Material: 1J22,Le = 178.3mm, AE = 22.05 mm²,Ve = 3.931cm ³
5. Material: FB45 ferrite, Le = 65.9mm, AE = 17.79 mm²,Ve = 1.172cm ³
6. Material: 1J79,Le = 88.37mm, AE = 10.44 mm²,Ve = 0.9227cm ³
7. Material: non-oriented silicon steel, Le = 69.62mm, AE = 46.14mm, Ve = 3.212cm
8. Material: 1J50,Le = 112.2mm, AE = 15.93mm ²,Ve = 1.787cm ³
9. Material: oriented silicon steel, Le = 216.4mm, AE = 68.64mm, Ve = 14.85cm
10. Material: iron powder core, Le = 61.1mm, AE = 69.56mm, Ve = 4.251cm
3. analysis
1. The FE-2100SD is tested by simulated impact method. The initial permeability and maximum permeability can be tested and have good repeatability. Foreign equipment using scanning method does not provide initial permeability parameters and maximum permeability can be provided, but the differences are too large. Considering that the hysteresis loop of this main comparison is not provided;
2, according to the difference between the impact method and the scanning method, the use of scanning method in general Hc will be higher than the impact method, but some samples appear to use the scanning method to test Hc lower than the impact method, can only be interpreted as test control differences or magnetic flux meter drift excessive correction;
3. In terms of Hs locking, the locking accuracy of FE-2100SD is relatively good regardless of the analog impact method and the scanning method. Other scanning methods all show deviation and the locking accuracy is slightly poor. Therefore, it feels that foreign power supplies are not as high as the legendary resolution;
4, Br measurement is irregular, compared with the simulation impact method or large or small. At the same time, in the actual test process, the analog integrator has drift, the test waveform is often asymmetrical up and down, and finally the drift is corrected to achieve symmetry, which may be the reason for the greater impact on Br;
5. Bs Japan METRON SK1100 is generally smaller than FE-2100SD, which can be understood as a difference in calibration. German equipment is large or small, and there are some doubts;
6. Pu tests the German equipment of China University of Metrology will vary greatly when the hysteresis loop is staggered. The staggered phenomenon of the saturation section (1,3 quadrant) of the scanning hysteresis loop occurs during the test. There is a bug in the German equipment software and Pu is negative;
7. For other analytical work, we need to obtain it after analyzing the sampled raw data.
For the measurement of DC magnetic properties of soft magnetic materials, there is no strict definition of relevant test methods (scanning method, impact method), and there is no relevant standard for scanning time and scanning waveform to carry out the same restrictions as soft magnetic AC measurement (keeping the magnetic flux sinusoidal). The test data are still quite different, and we will promote the improvement and progress of the equipment through more work!
DC Measuring Device for FE-2100SD Soft Magnetic Materials, is a comprehensive soft magnetic measuring equipment that can automatically measure the basic magnetization curve and hysteresis loop of soft magnetic materials under DC conditions. It can accurately measure static magnetic characteristic parameters such as initial permeability μ I, maximum permeability μ m, saturated magnetic induction strength Bs, remanence Br, coercivity Hc, hysteresis loss Pu, etc.
DC Measuring Device for FE-2100SD Soft Magnetic MaterialsScope of application:
(1) Automatically complete the demagnetization treatment of closed-circuit samples. The demagnetization method is AC low-frequency demagnetization, and the frequency is not higher than 10Hz to ensure the repeatability of the initial permeability of metal soft magnetic materials;
(2) The basic magnetization curve and magnetic conductivity curve of the closed-circuit sample soft magnetic material are tested by impact method;
(3) The static hysteresis loop and related parameters of soft magnetic materials are tested by impact method;
(4) The scanning method is allowed to be used in open solenoid and Epstein square circle;
Hunan Yongyi Technology Co., Ltd.-Focus on the field of magnetic measurement for 20 years! Professional productionGaussiometer magnetic flux meter permanent magnet materialMaterial measuring deviceSoft magnetic material measuring device soft magnetic silicon steel equipment silicon steel sheet iron loss measuring instrument magnetizing machine and so on.Can test magnetic flux, magnetic moment, surface magnetism, remanence, coercivity, intrinsic coercivity, magnetic energy product, hysteresis loop, demagnetizationCurves and so on.
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