ELECTROMAGNETIC SENSOR AND CALIBRATION THEREOF Russian patent published in 2020 - IPC G01R33/02 

FIELD: metallurgy.

SUBSTANCE: group of inventions relates to controlling formation of a microstructure of a metal target. System for controlling microstructure of metal target comprises multiple electromagnetic sensors for outputting magnetic field, wherein the excitation signal output by each of the electromagnetic sensors is a multi-frequency signal, detecting the resulting magnetic field and outputting the detection signal in response to it; and a control unit configured to receive detection signals from a plurality of electromagnetic sensors, determining phase change between the output magnetic field and the resulting magnetic field on each of a plurality of frequencies which form a multi-frequency signal for each of the plurality of electromagnetic sensors, and determining the microstructure of the metal target on the plurality of electromagnetic sensors based on the phase changes.

EFFECT: technical result is possibility of real-time monitoring of electromagnetic properties of metals during processing.

11 cl, 10 dwg