Methodology and results of the study of physical, mechanical and tribological characteristics of nitrided inner surfaces of long holes
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Дата
2024
Назва журналу
Номер ISSN
Назва тому
Видавець
Хмельницький національний університет
Анотація
Created control device physico-chemical and tribological characteristics of nitrided internal surfaces of long
holes, which is a hollow pipe with radial holes made at a certain distance from its ends to ensure the ratio of the
height of the center of the sample to the internal diameter of the pipe from 0 to 10 or more, which differs in that
the height of the samples simulates the depth of the longitudinal holes, and the samples themselves to facilitate
their fixation and to ensure the absence of electric spark discharge near the ends, they are installed with a certain
tension. At the same time, the length of the cylindrical sample is equal to the thickness of the pipe wall.Thus, each
sample is nitrided from two ends, which makes it possible to nitride from the outside and from the middle of the
model at almost the same temperature, as well as to compare the results of nitriding of two surfaces (external and
internal). At the same time, the difference in conditions is only in the location of these surfaces - external or
internal. All other factors that could affect the results of the modification are practically identical. However,
nitriding in a glow discharge with a constant current supply does not ensure the treatment of the inner surface
uniformly throughout the entire depth, and with significant ratios of length to diameter (more than 4), the inner
surface of the hole remote from the ends is practically not nitrided. Therefore, a process technology and a device
for quality control of anhydrous nitriding in glow discharge (BATR) of long holes with cyclically switched power
supply of the gas discharge chamber have been developed.
Опис
Ключові слова
long holes, cyclically switched discharge, wear resistance, dry friction
Бібліографічний опис
Methodology and results of the study of physical, mechanical and tribological characteristics of nitrided inner surfaces of long holes / M. S. Stechyshyn, O. V. Dykha, N. M. Stechyshynа, D. V. Zdorenko // Problems of Tribology. – 2024. – Vol. 29, No 2/112. – Р. 23-30.