Popov V. The concept and principles of designing parts of aggregate constructions, and their effective machining by a cutting tool with nanostructures

Українська версія

Thesis for the degree of Doctor of Science (DSc)

State registration number

0521U100387

Applicant for

Specialization

  • 05.03.07 - Процеси фізико-технічної обробки

26-03-2021

Specialized Academic Board

Д 64.062.04

National Aerospace University "Kharkiv Aviation Institute"

Essay

The object of study is physical and technological processes for obtaining nanostructured layers and nanocoatings due to action of ion fluxes and femtosecond laser radiation on materials of parts and tools; research methods – analytical, numerical and experimental methods of solid state physics, plasma, theory of thermal conductivity using nonstationary combined problem of thermal conductivity and thermoelasticity; experimental studies – with use of plants "Bulat-6" and NNV 6.6, cluster "Avinit"; scanning electron microscope REM-106; developed new devices and standard control and measuring equipment; results – technological automated cluster was created and production of range of high-resource parts of aviation hydraulic units was established; dependences of roughness on feed and cutting speed are obtained, which ensure minimum energy consumption; system of technological preparation for coating, which allows designing chemical composition of tool; innovativeness – concept and principles of creation of highly effective high-resource reliable details and cutting tools are developed; wide range of coatings and nanocoatings "Avinit" with high tribological properties was developed; theoretical model of dry laser hardening was generalized and possibility of obtaining nanostructures by applying femtosecond laser radiation was proved; it has been proved that the most influential factor in preventing or reducing abrasive wear is to obtain a grain size of 10…40 nm in coating or base material of tool; the implementation degree – the results of work were implemented at the "FED" (Kharkiv), the "Kharkiv Aggregate and Design Bureau" (Kharkiv), the "Motor Sich" (Zaporizhzhia), the "Ivchenko-Progress" (Zaporizhzhia); branch of application – technologies of manufacturing units of aviation, rocket and space equipment.

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