Serrano, Rodrigo Otávio PeréaCastro, Ana Leticia Pilz deMancilla Rico, Edwin AndresPinto, Maria AparecidaViana, Edna Maria de FariaMartinez, Carlos Barreira2019-05-142019-05-142018SERRANO, R. O. P. Abrasive effects of sediments on impellers of pumps used for catching raw water. Revista Brasileira de Engenharia Agricola e Ambiental, Campina Grande. v. 22, n. 9, p. 591-596, 2018. Disponível em: <http://www.scielo.br/pdf/rbeaa/v22n9/1415-4366-rbeaa-22-09-0591.pdf>. Acesso em: 13 fev. 2019.1807-1929http://www.repositorio.ufop.br/handle/123456789/11297This 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 experimental results showed that: i) The semi-angular and semi-rounded shapes of the sediments from the Acre River produced evidence of micro-grooving and plastic deformation in the three metallic alloys; ii) SAE 8620 steel showed higher resistance to abrasive wear than samples of gray and nodular cast iron; iii) the increase in the volume of worn material due to increment in sediment concentration and the relative velocity of the mixture (water + sediment) to the rotor pads.en-USabertoAbrasive wearMicro abrasionSediment concentrationDesgaste abrasivoMicroabrasãoArtigo publicado em periodicoA Revista Brasileira de Engenharia Agrícola e Ambiental permite que o Repositório Institucional da Universidade Federal de Ouro Preto (UFOP) deposite uma cópia eletrônica dos artigos publicados por esse periódico  em que ao menos um dos autores faça parte da comunidade cientifica da UFOP. Fonte: Licença concedida mediante preenchimento de formulário no dia 30 abr. 2015.http://dx.doi.org/10.1590/1807-1929/agriambi.v22n9p591-596