The physical picture of the processes of the apparatus with the processing technological environment interaction is determined, the change in its rheological properties were taken into account. The effectiveness of cavitation effects from the initial to the final processing stage is caused by the contact pressure and the speed of its propagation. A lot of power characteristics and parameters were considered for the effective implementation of the cavitation process. On the basis of these

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... ers, the energy of the process is accumulated by expanding the bubble from the initial balanced to its maximum radius. The basis of accumulation is the tensile forces in the phase of desiccation of the acoustic wave. The graphs of the contact pressure dependence on the key parameters of the process and the determination of the regularity of its change are made. The modes and parameters for leakage of energy-efficient acoustic process of different environments processing were proposed. The directions of of research results application and their further development were determined. Introduction. The technological processes implementation is carried out by energy transforming of the acoustic apparatus sound field into a technological environment. The energy of the acoustic apparatus is spent on the formation of shock waves, thermal energy, local electrification of bubbles, and excitation of the sonoluminescence and formation of free radicals. At the same time there is a significant change in the rheological properties of the technological environment. The characteristic stages of such process are the stages of origin, development and closure of bubbles in a certain volume of the technological environment. The constantly changing conditions and state of environment under loading causes the formation of complex mass and heat transfer. As a result, the mathematical description of such process is a very difficult task. That is why most works researched the dynamics of one cavitation bubble and the corresponding correlation of the results on the motion of the entire cavitation area. Certainly, this approach expanded the understanding of cavitation process basic nature but it does not solve the problem of the interaction of the cavitation apparatus and the technological environment. The initial energy concentrates in the contact area; it is further transferred to the technological environment and influences the effectiveness of the cavitation process. Therefore, the task of researching the interaction of the cavitation apparatus and the technological environment on the basis of determination and transformation of pressure on the environment as the dominant energy parameter is rather actual.