CS256908B1 - Method and device for ferromagnetic materials affecting - Google Patents

Abstract

1. Method for the treatment of ferromagnetic materials in which the materials (9) are exposed to a pulse magnetic field with certain pulse recurrence frequency, amplitude and length and are demagnetized at the end of the treatment, characterized in that the pulse field is bipolar with a ration of positive and negative amplitudes of 1.8 to 0.2, with the pulses of the one polarity having the same or lower recurrence frequency than the pulses of the other polarity.

Description

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ΠρΗΠΟΜβΗΗβ: I PHCyHOK

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ATEΕΡΡΟΜΑΓΗΗΤΗΗΕ MATEPHAJIH (PesioMe)

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Claims (2)

- 4 - SUBJECT OF THE INVENTION A method of effecting ferromagnetic materials treated by a pulsed magnetic field of a given frequency, amplitude and length, wherein it is demagnetized at the end of the treatment, characterized in that the pulsed field is a two-polar ratio of positive and negative amplitudes of 1.8. up to 0.2, wherein the pulses of one polarity occur at a time with a frequency equal to or less than that of the second polarity. 2. An apparatus for effecting ferromagnetic materials for retarding the process of clause 1 comprising a power supply block coupled to a control block and a generator coupled to a power block with an inductor comprising a stabilized controlled rectifier ( 2), connected to the power supply block (1) and the steering block (4), wherein the power block with the inductor (5) consists of two cells consisting of a series connected capacitor (6) and a coil (7) and a thyristor connected thereto ( 8), wherein the thyristor modes (8) are connected to the stabilized control rectifier (2), the control electrodes are connected to the generator (3), the control block (4) is also connected to the trigger sensor (10). 256908