Resumo

FERNANDEZ-COLUMBIE, Tomás; RODRIGUEZ-PINEIRO, Alberto J.; SUAREZ-TORRES, Ledennis  e  GUZMAN-ROMERO, Elís Efraín. Characterization of a white cast iron of the ASTM A 532 class III type A. Ingeniería Mecánica [online]. 2023, vol.26, n.3, pp. 17-24.  Epub 10-Fev-2023. ISSN 1815-5944.

The objective was to characterize the microstructure, hardness and stresses by X-ray diffraction of a white cast iron the ASTM A 532 class III type A type national manufacture used in the manufacture of centrifugal pump volute for the transport of lateritic pulp. For the characterization of these properties, three raw test tubes were selected. It was determined that this type of casting according to the chemical composition solidifies with a eutectic carbide network of the M7C3 (Cr7C3) type in bar shapes and the presence martensite, which attribute hardness variations from 645 to 685 HV, which infers resistance to abrasive wear without being subjected to high shock requirements. When analyzing the residual stresses that are distributed in the alloy, it was determined that it is a function of the solidification process, which increases the interplanar spacing of the planes that diffract beyond the stress-free state and are located around the eutectic carbides.

Palavras-chave : two phases flow; Reynold´s number; only bubble; train of bubble; drag coefficient; drag forces.

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