Surface quality of products with heterogeneous coatings during mechanical processing
https://doi.org/10.29235/1561-8358-2019-64-3-263-274
Abstract
It is shown that when machining products from materials with heterogeneous structure, possibilities of management of a condition of a blanket are significantly limited. As an example of management, cutting processing of products from materials with heterogeneous structure – turning of high-strength flame evaporated coverings is considered.
Because for an amorphous component of heterogeneous coverings the lack of deformation hardening is peculiar considerable deformation of the cut-off material is observed at their processing and characteristic shaving is formed. Highintensity thermobaric impact on the processed heterogeneous material leads to partial crystallization in a thin blanket with the high content of an amorphous phase.
As a result of researches the criterion which quantitatively estimates the statistics, which complexly characterize uniformity of structure of materials and dispersion of their properties, is offered. The criterion allows defining ability of materials to be exposed to cutting without carrying out long experiments.
Keywords
quality assurance,
product blanket,
heterogeneous coverings,
amorphous and crystal structure,
machining,
management of cutting process,
polycrystalline superhard material,
fractal formalism
Supporting agencies: The work was supported by the Belarusian Republican Foundation for Fundamental Research (Project T18P-183) and by Russian Foundation for Basic Research (Project 18-58-00009-Бел_a).
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