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Production of nanomaterials by formation of extreme plastic deformation ECAP (Equal‐Channel Angular Pressing) is a way of preparing nano‐structures of engineering materials. A development of a nanostructure in steel AISI 309 (EN X15CrNiSi20.20) with the technology of ECAP, and a new method for determination of the grain size are analysed here. In this study, we also make a comparison, analysis and...
The tests reporting about working conditions are in a practice used by producers and users. The overwhelming percentage of tests of machine tools is focused on interrupted cut (turning). Reliability test (by turning to interrupted cutting) has been proposed in the grant project GAĆR, which is done on a special preparation - interrupted cut simulator. Two types of ceramic cutting tools from the WIDIA...
The paper proposes a derivation of general characteristic acoustic parameters of the hydrodynamic resonation system elements. The acoustic parameters of the system are the acoustic compliance and acoustic mass as primary parameters for calculation of the theoretical resonation fundamental frequency for turbulent water-flow. Frequency model (5 kHz to 25 kHz) refers to the interpolation for the liquid...
This contribution is dealing with products creation in progressive machining. Creatics is new science discipline which formulates laws of production of objects. The production has its theoretical background. The contribution informs about the evolution and the present state and formulated axioms and laws. The revealed laws prove convergence of phenomena and processes of production. The laws show that...
The paper deals with analysis of chip formation and related aspects of the chip formation as chip thickness, chip thickness ratio, shear angle and chip segmentation during turning hardened steel lOOCro. The paper draws a comparison of some aspects of the chip formation between turning roll bearing steel in the annealed and turning roll bearing steel in the hardened state. The results of the analysis...
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