Silicon steel magnetic property detection used ferrometer

Abstract

The disclosed permeameter for silicon steel magnetic performance comprises: an upper / lower yoke with one fixed and another connected with a drive motor, some coils included excitation coil and measuring coil, an excitation power, and a pressure sensor. Compared with Epstein square coil, this invention can save sample material greatly, reduces measurement error, and can bring much economic benefit.

Description

technical field [0001] The invention relates to the field of magnetic measurement, in particular to a permeameter for measuring the magnetic properties of silicon steel. Background technique [0002] The magnetic characteristic parameters of silicon steel sheet mainly include parameters such as magnetic flux density, magnetic permeability, coercive force, iron loss, etc., which are usually measured by Epstein square ring or magnetic permeability meter as the excitation mechanism. Due to the complicated sample production and high measurement cost of the Epstein square circle, it has been gradually replaced by the magnetic permeability meter. [0003] The permeameter in the prior art includes: an upper U-shaped yoke, a lower U-shaped yoke, a coil and a skeleton, wherein the coil includes an excitation coil and a measuring coil, and the coil is wound on the skeleton. When measuring the magnetic characteristics, the sample to be tested is placed between the upper and lower U-sh...

AI Technical Summary

Problems solved by technology

This manual measurement process is not only troublesome and affects the measurement efficiency, but also has many defects. For example, in order to reduce the measurement error, the magnetic characteristic measurement requires the upper and lower U-shaped yokes to be closed and pressed against the sample to be tested. Tight to form a closed magnetic circuit, and the pressure on the sample to be tested is required to be between 100 and 200 Newtons

If the above-mentioned pressure is too small, the closure between the yokes will not be tight; if the pressure is too high, the deformation of the sample will be too large, and the excessive pressure will cause damage to the permeability meter

Usually manual operation is difficult to ensure that the above pressure value is in the appropriate range

At the same time, at the end of the measurement, the operation of taking out the sample to be tested is relatively difficult

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