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Modelling Wear Phenomena Specific to Mixer Blades in Concrete Production Plants

Authors :
Marius Gabriel Petrescu
Aristia-Ioana Popovici
Adrian Niță
Dan Isbășoiu
Teodor Dumitru
Maria Tănase
Source :
Applied Sciences, Vol 14, Iss 10, p 3988 (2024)
Publication Year :
2024
Publisher :
MDPI AG, 2024.

Abstract

In the cement concrete manufacturing industry, mixers are critical pieces of equipment that play an essential role. Mixers ensure, by mechanically mixing the materials that make up the concrete, the homogeneity of the mixture. Since the active elements of the mixer in the concrete industry—the mixing blades—come into permanent contact with the mineral aggregates in the mixture formed by water and cement, they are permanently subjected to a strong abrasive–erosive wear process. The authors of this article were concerned with the establishment of tribological models for studying the wear of mixing blades, in order to identify the influence of their constructive parameters on the wear intensity. A complex model (Kraghelsky–Nepomnyashchi model) was adopted for the study. The modeling results revealed that the wear intensity decreases with an increasing blade angle of attack and increases linearly with increasing speed, as well as with an increasing friction coefficient. The modeling results confirm that the wear intensity is lowest when the mixing blade is inclined at a 60° angle, while the highest value is recorded for 30°. By identifying the angle at which the greatest wear of blades occurs, interventions can be made in the design of a more durable mixer (with the optimal installation angle of the mixer blades), thus requiring fewer corrective maintenance interventions. Based on these findings, we conclude that the complex model used in the experiment can provide a convenient and efficient tool for the study of erosive–abrasive phenomena.

Details

Language :
English
ISSN :
20763417
Volume :
14
Issue :
10
Database :
Directory of Open Access Journals
Journal :
Applied Sciences
Publication Type :
Academic Journal
Accession number :
edsdoj.8b9086da25c47b885c6cd84787a94df
Document Type :
article
Full Text :
https://doi.org/10.3390/app14103988