Abstract
The multifactorial erosion was conducted in this paper to test the compressor impeller material FV520B using high-speed gas-solid two phase flow erosion tester and surface morphology analysis method. Based on the particle motion and collision energy equation as well as regression analysis of multi-factor orthogonal experiment, a phenomenological erosion depth model which captures the effects of impact velocity, angle and particle size, has been developed. The model includes removal of material due to both deformation damage and micro-cutting. Results show that the peak of experiment depth and the maximum calculated depth all appeared at near 45°, rather than near 24° where the maximum erosion rate appeared. Comparing the calculated values and the results of each single factor experiment, the errors are within 15%. The predictions of the simplified version of the model were in good agreement with the results of single factor experiments. Also, the reliability of the assessment formula was verified to assess the impeller erosion life, which indicated that this calculation model could be used to estimate the erosion depth of compressor impeller material FV520B.
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Liu, ZW., Li, JF., Jia, XJ. et al. Establishment and analysis of erosion depth model for impeller material FV520B. Int. J. of Precis. Eng. and Manuf.-Green Tech. 3, 27–34 (2016). https://doi.org/10.1007/s40684-016-0004-8
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DOI: https://doi.org/10.1007/s40684-016-0004-8