Structural parameters compared to piezoceramic power head efficiency used in sound amplification of liquid steel

Purpose: The main purpose of the study was to determine the efficiency of mechanoacoustic piezoceramic power head with resonance frequency of 26.4 kHz, used in acoustic processing of liquid steel. The efficiency was determined due to compressive force quantity of piezoelectrical ceramic, characterized by the moment turning circumferential screws of the head.Design/methodology/approach: The research was conducted on a water model. Efficiency was determined depending on the pressure force of active and passive part of the head, specified by torque moment within the range of 25-35 Nm and depending on the medium active power on the output of the generator within the range of 50-150 W. The mechanoacoustic efficiency was determined by calorimetrical method.Findings: The acquired findings indicate relations between the radiation power inflicted, the force turning circumferential screws and the mechanoacoustic efficiency of power head.Research limitations/implications: The results obtained shall be used while designing and operating power heads.Practical implications: It is necessary to consider the mechanoacoustic efficiency of the applied power head during sound amplification of liquid centers.Originality/value: Acoustic processing may be the last stage of steel ingot quality forming process, therefore it is necessary to learn all the parameters influencing its efficiency.