Strength examination of high-speed industrial centrifugal compressor impellers, manufactured by vacuum brazing method
DOI:
https://doi.org/10.25206/2588-0373-2025-9-4-46-54Keywords:
centrifugal compressor, impeller, vacuum brazing, strength calculations, finite element analysis, gas-dynamic characteristics.Abstract
The paper presents the results of a comprehensive study on the reverse engineering process of a highspeed centrifugal compressor impeller ICK KCK-01-100-1-8-А, pecial attention is paid to the complexity of reproducing a part, including the selection of a material with a significant difference in state standards and the choice of a substitute material, the selection of solder for vacuum soldering, and the technological aspects of vacuum soldering.
A simulation of gas dynamic characteristics is carried out — the pressure ratio and the temperature difference, the results of which showed satisfactory results. The stress-strain state is estimated. The simulation is performed in accordance with the requirements of API 617 and INTI S.60.2–2023 standards, taking into account the MCS and TRIP speeds of the impeller. Based on the calculation results, the diagrams of the stress-strain state and the diagrams of the plastic deformation of the rotor are given. At the end of the project, the impeller is manufactured and bench acceleration tests are carried out, according to the results of which size control is performed and deformations are evaluated using flaw detection methods.
It is shown that successful restoration of the impeller requires a deep understanding of many nuances. The results obtained confirm that the use of domestic analogues of materials, as well as modern methods of analysis, makes it possible to create an impeller with characteristics close to the best examples of modern technology.
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