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Finite element method (FEM) is a powerful tool to predict cutting process variables, which are difficult to obtain with experimental methods. In this paper, modelling techniques on continuous chip formation by using the commercial FEM code ABAQUS are discussed. A combination of three chip formation analysis steps including initial chip formation, chip growth and steady-state chip formation, is used...
Erosion of carbon steel by fly ash and unburned char particles was measured in the convection section of an industrial boiler firing micronized coal. The rate of erosion was enhanced by directing a small jet of nitrogen, 3 vol.% oxygen in nitrogen, or air toward the surface of a test coupon mounted on an air-cooled tube.Ash and char particles suspended in the flue gas entrained by the jet were accelerated...
Martensite spheroidal cast iron is an abrasion-resistant material of superior toughness to white case irons. In order to assess the effects of matrix and graphite phases on the wear performance of the iron, abrasion tests were carried out under both two-body (pin-on-disc) and three-body impact conditions. The matrices involved in the tests included martensite, martensite with increased retained austenite,...
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