Numerical optimization of the sintering process of dispersed electroerosion particles of the alloy VNZh 95
https://doi.org/10.22405/2226-8383-2021-22-3-298-310
Abstract
In this paper, the optimal parameters of the process of obtaining a heavy tungsten alloy by spark plasma sintering of the particles of the alloy VNZh 95 on the microhardness of the sintered
samples are determined by conducting a full factorial experiment of the type. The operating parameters of the spark plasma sintering unit were selected as factors: temperature, pressure,
and holding time, min. The optimal parameters of the installation operation were determined for the electroerosive material VZH 95, previously obtained in two working media: distilled water
and lighting kerosene. According to a series of experiments to determine the maximum value of the optimization parameter Y (microhardness), which amounted to: for samples obtained
from particles dispersed in water — 3498,6 MPa at 𝑇 = 1050∘C, a pressure of 𝑃 = 40 MPa and holding time 𝑡 = 10 min; for samples obtained from particles dispersed in kerosene — 2449,2 MPa at a temperature 𝑇 = 1200∘C, 𝑃 = 40 MPa and holding time 𝑡 = 5 min. The results of experimental studies of the composition, structure, and properties of heavy tungsten alloys made of electroerosion-dispersed particles of the VNJ 95 alloy obtained under optimal
conditions are presented below.
About the Authors
Ekaterina Vladimirovna Ageeva
Southwestern state University
Russian Federation
Russian Federation
candidate of technical sciences, associate professor
Evgeniy Viktorovich Ageev
Southwestern State University
Russian Federation
Russian Federation
doctor of technical sciences, professor
Olga Vladimirovna Kuzovleva
Russian State University of Justice
Russian Federation
Russian Federation
candidate of technical sciences, docent
Alexander Evgenievich Gvozdev
Tula State Lev Tolstoy Pedagogical University
Russian Federation
Russian Federation
doctor of engineering, professor
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Review
For citations:
Ageeva E.V., Ageev E.V., Kuzovleva O.V., Gvozdev A.E. Numerical optimization of the sintering process of dispersed electroerosion particles of the alloy VNZh 95. Chebyshevskii Sbornik. 2021;22(3):298-310. (In Russ.) https://doi.org/10.22405/2226-8383-2021-22-3-298-310
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