METHOD OF MEASURING KINEMATIC VISCOSITY AND ELECTRICAL RESISTANCE OF MOLTEN METAL (VERSIONS) Russian patent published in 2012 - IPC G01N11/16 

FIELD: physics.

SUBSTANCE: method of measuring kinematic viscosity and electrical resistance of molten metal, where the turning angle of the analysed melt sample is determined. To this end, a rotating magnetic field generated by a main magnet assembly and lying in the zone of heating the analysed sample, and a temporary additional magnetic field outside the heating zone, generated by an additional magnet assembly, are used. Trajectory parameters of the reflected light beam, corresponding to the turning angle during torsional vibrations of the crucible with the melt sample, are determined photometrically using output electrical signals of a photodetector. Electrical resistance of the melt is determined from the moment the melt is exposed to the rotating magnetic field by measuring parameters of neighbouring half-cycles of one of the initial periods of the trajectory of the reflected light bream. Further, the rotating magnetic field is switched off and the value of logarithmic decrement is determined, from which kinematic viscosity is determined. In all measurements, comparison of time values of output signals of the photodetector is used.

EFFECT: shorter time for measuring both parameters, high reliability and accuracy of measurements, broader functional capabilities, simple and cheap experiment, possibility of reducing loss of the melt and its components.

9 cl, 7 dwg