Abstract
Pneumatic conveying is a process of transporting particulate material through pipelines using compressed gas. As material is conveyed through pipeline and bends, the pipeline especially after bends suffers severe wear due to particles’ interactions with the surfaces. Removal of material from solid surfaces by action of impinging particles is known as erosion. It is well known that particle velocity and impact angle play a major role in determining the material removal rate from the surface. In a recent study, it was demonstrated that materials’ response to deformation during impacts dictates how the material is removed from the surface. This paper presents the surface characteristics of ductile materials due to single-particle impacts as well as standard erosion using micro-sand blaster. Surface and subsurface damage characteristics with respect to the impact parameters as well as particles’ angularity have been presented. Aluminum and mild steel surfaces impacted by spherical zirconia and angular alumina particles have been analyzed using scanning electron microscope (SEM). Finally, the material removal mechanisms have been discussed with respect to the service life of pneumatic conveying pipelines.
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References
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Cenna AA, Williams KC, Jones MG (2010) Wear mechanisms in pneumatic conveying of sand and analysis of predictive model for pipeline thickness loss. WCEAM, Brisbane Queensland, Australia from 25–27 Oct 2010
Acknowledgments
This work forms part of the research program for the CRC for Integrated Engineering Asset Management. The authors also acknowledge the EM-X-ray unit of the University of Newcastle for their continual assistance in SEM/EDS analyses.
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Cenna, A.A., Biswas, S., Williams, K.C., Jones, M.G. (2015). Understanding Wear Mechanisms and Their Implication to Service Life of Pneumatic Conveying Pipelines. In: Lee, W., Choi, B., Ma, L., Mathew, J. (eds) Proceedings of the 7th World Congress on Engineering Asset Management (WCEAM 2012). Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-319-06966-1_13
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DOI: https://doi.org/10.1007/978-3-319-06966-1_13
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