Abstract
Feeding and microstructure of a test casting rigged with different feeder combinations was studied. Castings were examined and classified by soundness and microstructure. Subsequently the casting macro- and microstructure was analyzed to study how differences in solidification and segregation influence the soundness of different sections of the castings. Moreover, the microstructural changes due to variations in thermal gradients are classified, and the variations in the mushy zone described.
The paper discusses how solidification and segregation influence porosity and microstructure of ductile iron castings. The goal is to enable metallurgists and foundry engineers to more directly target mushy zone development to prolong the possibility to feed through this section. Keeping smaller section open for an extended period will make it possible to use fewer or smaller feeders, with reduced energy consumption and cheaper products as a result.
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References
N. K. Vedel-Smith, et al. Quantification of Feeding Effects of Spot Feeding Ductile Iron Castings made in Vertically Parted Molds. AFS Proceedings, (1310), 2013.
EN 1563:2012-3—Founding: Spheroidal Graphite Cast Irons, 2012.
EN 1371-1:2011—Founding: Liquid Penetrant Testing—Sand, Gravity Die, and Low Pressure Die Castings, 2011.
Ductile Iron Data. Ductile Iron Data — for Design Engineers. Rio Tinto Iron & Titanium Inc., 1990.
Lennart Elmquist, et al. On the Formation of Shrinkage in Grey Iron Castings. Key Engineering Materials, 457:416 421, 2011.
Lennart Elmquist and Attila Diószegi. Shrinkage Porosity and its Relation to Solidification Structure of Grey Cast Iron Parts. International Journal of Cast Metals Research, 23(1):44–50, 2010.
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© 2014 TMS (The Minerals, Metals & Materials Society)
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Vedel-Smith, N.K., Tiedje, N.S. (2014). Effect of Feeder Configuration on the Microstructure of Ductile Cast Iron. In: Tiryakioğlu, M., Campbell, J., Byczynski, G. (eds) Shape Casting: 5th International Symposium 2014. Springer, Cham. https://doi.org/10.1007/978-3-319-48130-2_14
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DOI: https://doi.org/10.1007/978-3-319-48130-2_14
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48594-2
Online ISBN: 978-3-319-48130-2
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