Научная электронная библиотека ULRICH'S Periodicals Directory

Сибирский государственный университет
науки и технологий имени академика М.Ф. Решетнева

Сибирский аэрокосмический журнал
ISSN 2712-8970 (Print) ISSN 2782-5760 (on-line)

Сведения об образовательной организации

UDK 621.924 Doi: 10.31772/2587-6066-2019-20-2-277-283
THE RESEARCH OF THERMOPHYSICAL PROPERTIES OF THE WORKING ENVIRONMENT FOR ABRASIVE-EXTRUSION PROCESSING
Pshenko E. B., Shestakov I. Ya., Remizov I. A., Veretnova T. A.
Reshetnev Siberian State University of Science and Technology, 31, Krasnoyarsky Rabochy Av., Krasnoyarsk, 660037, Russian Federation; Krasnoyarsk State Medical University behalf of Professor V. F. Voyno-Yasenetsky, 1, Partizan Zheleznyaka, Krasnoyarsk, 660022, Russian Federation; Siberian Federal University, 79, Svobodny Av., Krasnoyarsk, 660041, Russian Federation
The most important resource for improving the performance of parts is the reduction of the surface roughness. One of the promising ways to reduce the surface roughness is the abrasive extrusion processing. When developing the AEP technology, it is necessary to know the flow rate (pressure) of the WE, which depends on the viscosity of the latter. In turn, the viscosity of the WE is determined by its temperature. The temperature of the working environment at AEP can be calculated if the coefficients of thermal conductivity and thermal diffusivity of the WE are known. The working environment for AEP consists of two components, therefore, the coefficient of thermal conductivity can be calculated by known formulas. However, the calculation error is significant, therefore, the experimental determination of the abovementioned coefficients is required. The installations for the coefficients research have been presented, the methods of conducting experiments have been developed. After mathematical processing of the experiments results by means of the AdvanceGrapher v. 2.11, the dependences of the thermal conductivity and thermal diffusivity on the abrasive concentration have been obtained. The studies of the thermophysical properties of the working environment have shown that the values of thermal conductivity and thermal diffusivity of the WE are mainly determined by the concentration of abrasive grains in the working environment. The direct dependence of these coefficients on the degree of filling the working environment with abrasive grains has been established.
Keywords: abrasive extrusion processing, working environment, thermal conductivity and thermal diffusivity coefficients.
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Pshenko Elena Borisovna – Cand. Sc., Associate Professor at the Department of Mechanical Engineering Technology;
Reshetnev Siberian State University of Science and Technology. E-mail: pshenko-64@mail.ru.

Shestakov Ivan Yakovlevich – Dr. Sc., Associate Professor, Professor, Reshetnev Siberian State University
of Science and Technology. E-mail: yakovlevish@mail.ru.

Remizov Igor Anatolyevich – Cand. Sc., Associate Professor, Krasnoyarsk State Medical University named
after professor V. F. Voyno-Yasenetsky.

Veretnova Tatyana Anatolyevna – Cand. Sc., Head of the correspondence department; Siberian Federal
University.


  THE RESEARCH OF THERMOPHYSICAL PROPERTIES OF THE WORKING ENVIRONMENT FOR ABRASIVE-EXTRUSION PROCESSING