Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Graphite size and distribution of nodular cast iron obtained by continuous casting
Submission Author:
Sergio Manenti , PR , Brazil
Co-Authors:
Paulo Victor Prestes Marcondes, Paulo Soares, Ricardo Torres, Sergio Manenti
Presenter: Sergio Manenti
doi://10.26678/ABCM.COBEM2017.COB17-2428
Abstract
During the solidification of the nodular cast iron the cooling rate induces several macrostructural changes, such as: carbide precipitation, casting defects and a notable variation in nodule count, which consequently changes the size of nodules and the spacing between them. The present work studies the effect of the cooling rate on a nodular cast iron bar, the influence of the variation of the number of nodules, nodules size, spacing between nodules and hardness. The nodular cast iron samples were drawn from a round bar obtained by the FUCO® continuous casting process in the following positions: bar surface (higher cooling rate), half bar radius (intermediate cooling rate) and center bar (lower cooling rate). The microstructural characterization was performed using an optical microscope and the measurements were performed using a SEM (Scanning Electron Microscope). Through the results it was possible to identify the variations and a constant ratio between the spacing between nodules and the diameter of the graphite nodules.
Keywords
Nodular Cast Iron, tool wear, Sheet metal stamping
