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	Provedor de dados REA (1) AGRIAMBI (1) Autor Cappelli,Nelson L. (1) Castro,Ana L. P. de (1) González,Hugo (1) Martinez,Carlos B. (1) Pinto,Maria A. (1) Rico,Edwin A. M. (1) Serrano,Rodrigo O. P. (1) Toro,Alejandro (1) Viana,Edna M. de F. (1) Mais... Palavra-chave Abrasive wear (2) Agricultural tool (1) Micro abrasion (1) Rotary plows (1) Sediment concentration (1) Tribosystems (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2018 (1) 2013 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Abrasive effects of sediments on impellers of pumps used for catching raw water AGRIAMBI Serrano,Rodrigo O. P.; Castro,Ana L. P. de; Rico,Edwin A. M.; Pinto,Maria A.; Viana,Edna M. de F.; Martinez,Carlos B.. ABSTRACT This study presents an analysis of the abrasive effects of sediments from the bed of the Acre River, Brazil, on the wear of three different ferrous materials employed in the manufacture of impellers of centrifuge pumps used to catch raw water. In order to evaluate the abrasive wear and specific wear coefficient (k) as a function of sediment concentration, tests were conducted in samples of SAE 8620 steel, nodular cast iron and gray cast iron by using a rotary-ball abrasion meter. These tests employed abrasive slurry with concentration of 1, 2, 3, 5 and 10 g L-1 of sediments in distilled water. The volume of worn material as a function of the relative velocity of water flow in relation to the impeller blades was mathematically estimated. The... Tipo: Info:eu-repo/semantics/article Palavras-chave: Abrasive wear; Micro abrasion; Sediment concentration. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000900591 Wear of rotary plows operating in a tropical clay loam soil REA González,Hugo; Cappelli,Nelson L.; Toro,Alejandro. The wear resistance of rotary plows operating in a clay loam soil was studied. The degree of damage caused to the soil and the amount of mass lost by the tools were determined in order to establish correlations between the physical properties of the soil and the wear mechanisms acting on the tribosystem. Field tests were carried out in 12 plots and a randomized experimental design with 4 levels, 3 replicas per level and 2 passes per plot was applied. The levels relate to the tillage implements employed: rotary tiller, rotary power harrow, small motorized rotary tiller and control (unaltered soil). The highest mass losses were measured in rotary tiller and rotary power harrow's tools, while the small motorized rotary tiller's tools showed generally lower... Tipo: Info:eu-repo/semantics/article Palavras-chave: Abrasive wear; Tribosystems; Rotary plows; Agricultural tool. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000400017 Registros recuperados: 2 Primeira ... 1 ... Última

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