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Keywords = Baroid tribometer

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16 pages, 7180 KiB  
Article
The Application of Tribological Tests to Study the Wear Behavior of Asphalt Cutter Teeth: An Experimental Investigation Using Baroid Tribometer
by Teodor Dumitru, Marius Gabriel Petrescu, Maria Tănase and Eugen Laudacescu
Coatings 2023, 13(7), 1251; https://doi.org/10.3390/coatings13071251 - 15 Jul 2023
Cited by 4 | Viewed by 1756
Abstract
In this paper, the authors present the results obtained within a complex experimental program that focuses on determining the tribological characteristics of the active part (tungsten carbide tooth tip) of the cutter teeth of asphalt milling equipment. The experiments are performedunderdifferent testing conditions [...] Read more.
In this paper, the authors present the results obtained within a complex experimental program that focuses on determining the tribological characteristics of the active part (tungsten carbide tooth tip) of the cutter teeth of asphalt milling equipment. The experiments are performedunderdifferent testing conditions (in a dry environment and in water) to highlight the need to use water, when milling the asphalt coating, with the purpose to reduce the wear of milling teeth. The experimental results show that water contributes to the substantial reduction of wear rate (more than eight times) on the active area of the tooth. The proposed test method—testing with the Baroid tribometer—is intended to evaluate the tribological characteristics of the materials using parallelepiped-shaped samples. The authors of the work performed the tests on samples that represent the teeth of the milling cutter having the real shape (so not on samples). The obtained results demonstrate that the test method can be used with good results on real parts. Full article
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16 pages, 5112 KiB  
Article
Experimental Research on the Wear Behavior of Materials Used in the Manufacture of Components for Cement Concrete Mixers
by Adrian Niță, Marius Gabriel Petrescu, Teodor Dumitru, Andrei Burlacu, Maria Tănase, Eugen Laudacescu and Ibrahim Ramadan
Materials 2023, 16(6), 2326; https://doi.org/10.3390/ma16062326 - 14 Mar 2023
Cited by 11 | Viewed by 2775
Abstract
Mixers used in the production of cement concrete operate under special conditions such as mechanical stresses, abrasive–erosive friction phenomena, and corrosive working environments. In this paper, the authors aimed to establish a correlation between the chemical composition of mixer blade materials and their [...] Read more.
Mixers used in the production of cement concrete operate under special conditions such as mechanical stresses, abrasive–erosive friction phenomena, and corrosive working environments. In this paper, the authors aimed to establish a correlation between the chemical composition of mixer blade materials and their wear behavior. Three types of alloyed (chromium) cast iron were used for an experimental program that included three sets of tests in accelerated wear conditions which replicated the actual working environment (mixture of mineral aggregate, sand, cement, and water). The tribological tests were carried out using a Baroid tribometer. The results indicated that regardless of the test environment, cast iron with the highest chromium content exhibited the best wear resistance. However, it cannot be concluded that the wear resistance of the studied cast iron materials increases as a direct result of an increase in chromium content. For a chromium content of less than 25%, a better tribological behavior was observed for cast iron with a lower chromium content (of about 4%) than for cast irons with a higher chromium content (of about 9%). Full article
(This article belongs to the Section Corrosion)
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