Measuring device and method of magnetostriction coefficient

A technology of magnetostriction coefficient and measuring device, which is applied in the direction of magnetostrictive performance measurement, measuring device, magnetic performance measurement, etc., can solve the problem of low efficiency, random fluctuation of amplified and received energy, and large deviation of measurement reproducibility of magnetostrictive measuring instrument and other issues to achieve high efficiency
CN110375656BActive Publication Date: 2021-08-13武汉钢铁有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
武汉钢铁有限公司
Publication Date
2021-08-13

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Abstract

The invention discloses a magnetostrictive coefficient measuring device, comprising an air-floating platform, a laser vibrometer, an excitation unit, a reflective sheet self-adhesive unit, a sliding unit and a sampling unit; the sliding unit includes a pair of guide rails and is slidably installed U-shaped guide rail on the guide rail; the sampling unit includes a mechanical gripper slidably mounted on the U-shaped guide rail, a front suction cup arranged on one end of the mechanical gripper, a rear suction cup arranged on the other end of the mechanical gripper, and a mechanical gripper arranged on the guide rail. The sample frame to be measured, the sample measurement frame and the sample recovery frame are between; the self-adhesive unit of the reflective sheet includes an electric turntable arranged next to the sample frame to be measured and an electromagnetic chuck installed on the mechanical gripper. The measuring device measures the magnetostrictive strain amount of the grain-oriented electrical steel sheet and the reproducibility of the noise level value can be controlled within 3%, and the measurement accuracy exceeds the control requirements of the laboratory; at the same time, the measuring device realizes the magnetostrictive coefficient of the electrical steel sheet. non-contact measurement with high efficiency.
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Description

Technical field

[0001] The present invention belongs to the technical field of silicon steel product detection, and more particularly to measuring devices and measurement methods of magnetostrictive coefficients. Background technique

[0002] The magnetostrictive effect refers to the phenomenon that the ferromagnetic material is in an external magnetic field environment, the volume or size of the material changes corresponding to the magnetization intensity. In 1842, the physicist W. P.joule found the magnetostrictive phenomenon of iron materials, and then the magnetostrictive phenomenon of ferroalloys was also discovered, and these ferric alloy materials were studied. The study found that when these ferromagnetic materials are external to an external force or a deformation, the surrounding magnetic field can be changed, thereby causing changes in the surrounding magnetic field regularity, that is, the magnetostrictive reverse effect found by Physician Villari, general habit is V...

Claims

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