The model of the hydropuls mechanism of drill machines is presented. The differential equations featuring mechanical and hydraulic processes for all cycle are given.

In operation legitimacies structure shaping lead antifrictional bronzes gained are studied at various requirements of crystallisation by a modification of velocity of refrigeration of casting moulds. Influence of a microstructure of studied materials on them tribotechnical properties is explored. It is displayed that lowering of velocity of refrigeration lead bronzes leads to friction coefficient lowering. For multicomponent lead-tin bronzes, lowering of velocity of refrigeration lead bronzes leads to magnification of value of a friction coefficient and growth of mechanical properties.

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The paper presents the numerical research of conjugate heat exchange and hydrodynamics in the motion of viscous fluid in the technological elements of energy systems (cavities) in the consideration of its damage. The hydrodynamic figure of the motion viscous fluid and its temperature fields for solid and fluid phases obtained. The model parameters influence on the motion of the heat carrier and the distribution of temperatures in two phases have been studied. The impact of dynamic parameters and geometrical characteristics for the formation of contours generating craters studied.

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