The Effect of Different Silica-Based Ceramic Cores on Surface Destruction of a Casting Part

M. Naseri¹ , M.R. Alizadeh² , Z. Shamohammadi Ghahsareh³

Section:Research Paper, Product Type: Journal-Paper
Vol.11 , Issue.4 , pp.8-13, Dec-2024

Online published on Dec 31, 2024

Copyright © M. Naseri, M.R. Alizadeh, Z. Shamohammadi Ghahsareh . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 

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Abstract :
In this paper, the impact of a silica-based ceramic core on the internal defects of a cast component was examined. Specifically, two distinct types of cores were created using coarse and fine zircon powder particles. Subsequently, two nozzles were fabricated through the investment casting process, and their internal surfaces were thoroughly analysed using Borescope and Radiography inspection techniques. Some samples were then taken from the nozzles and assessed using Optical Microscopy (OM) and Scanning Electron Microscopy (SEM). The findings indicated that the casting component hollowed out by the core made from coarse particles exhibited surface destruction. This destruction is likely attributable to the reaction between the core and the metal. In contrast, the component with the core composed of fine zircon particles displayed a very smooth inner metal surface, with no signs of surface damage. Indeed, the finer particles proved to be more stable when interacting with the molten metal.

Key-Words / Index Term :
Ceramic core; Zircon; Nozzle; Investment casting

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