FIELD: rolling.
SUBSTANCE: invention relates to the field of control of the physical properties of products and materials and can be used to detect areas with surface hardness anomalies of rolled steel products. A device for detecting zones with inhomogeneous physical properties in rolled metal products contains a roller table for moving the control object during the control process, a system for compensating for the effect of the working gap, a generator control unit and a set of electromagnetic sensors designed to generate measuring electromagnetic pulses in the control object, closing through the control object, registering electrical signals, a generator of measuring electromagnetic pulses performs periodic phase inversion of measuring pulses, moreover, the device also contains a block for analyzing and comparing signals received when exposed to the same section of the object of control by electromagnetic pulses with opposite initial phases.
EFFECT: increase in the accuracy of determining the uniformity of the mechanical properties of products.
4 cl, 1 dwg
