SU1282028A1 - Method of measuring intensity of magnetic saturation field of specimen of electroconductive homogeneous material - Google Patents

Abstract

The invention relates to a magneto-measuring technique and can be used to determine the magnetic properties of material samples. The purpose of the invention is to expand the range and increase the productivity and accuracy of measurements — with sample 1 magnetically coil inductor 2 after each change in a known level of a uniform magnetizing field acting on sample 1. The quality factor of this coil is determined exceeding the operating frequency of the sample material. The intensity of its saturation field, and g, is defined as the minimum level of intensity of the magnetizing field, at which the good quality is mentioned; A device that implements the method includes a meter 4 of the intensity of the magnetic field 3, a measuring transducer 5 and a meter 6 of good quality. 4 il. with (L

Description

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The invention relates to magnet measurement technology and can be used to determine the magnetic properties of material samples.

The purpose of the invention is to expand the range of the tested samples to increase the performance to the measurement accuracy.

The purpose of the invention is achieved by the fact that a coil of inductance is magnetically matched with a sample. as the minimum level of intensity of the magnetized field, at which the mentioned Q-factor is maximum, Figure 1 shows the structural scheme of measurements; on fng ,, 2 - characteristic (H) for permallo in the saturation region; FIG. 3 shows the dependence of losses in a metal sample on induction; in FIG., the dependence of the quality factor on the level of the magnetizing field.

A device that implements the method contains a sample 1 of electric homogeneous material, a coil 2 inductance, a power line 3 of a constant uniform magnetic field, a meter 4, a field strength, a measuring transducer 5, a meter 6 of good quality.

The method is implemented in the following manner.

Sample 1 of the material is placed inside the coil 2 of the inductance of the RAVNIIPI Order 7261/43 Tioazh730Proyevo-polygraph. pr-tibe, Ukgorod st. Project, 4

The oscillating circuit is exposed to a constant uniform magnetic field 3, the level of which is known, and the quality factor of the circuit is measured. Then the level of the constant field is measured and the quality factor, etc. is again measured, and the desired field strength is defined as the minimum level of the constant field at which the quality factor becomes maximum (Fig. 4)

For measuring the level of the constant field intensity, a voltage meter 4 with a measuring field is used.

Converter 5 (for example Ш1-8): dp Q measurement - Q meter 6 (for example VM-560) „

Claims (1)

Invention Formula A method for measuring the magnetic field strength of a sample of an electrically conductive homogeneous material, consisting in the magnetic coupling of the sample to the inductance, magnetizing it in a constant uniform field of a known varying level, in order to expand the range of the tested samples, an increase in productivity and accuracy of measurement, after each change in the level of a constant uniform field, the quality of the coil at the frequency is determined, higher than the operating frequency of the material a sample, and the intensity of the saturation magnetic field of the sample is defined as r-shimmal intensity of a constant uniform field, with which the quality factor of the inductance is maximum. f (/ g.Z "four F1№.4 Subscription