Abstract
Grey cast iron is one of the easiest metals to cast in a foundry, and of ferrous metals, it has the lowest pouring temperature, high fluidity, and very low shrinkage during the transformation from the liquid to solid phase. One of the disadvantages of this grade of cast iron is the presence of the different types of defects produced in green sand casting. Cast defects are, at a higher proportion, caused by evolution of gases. Pinholes and blowholes are major casting defects caused by gases. This experimental work has focused on reducing gas defects on casting component, stator housing, at a production scale using the green sand casting process. The casting component produced was strongly affected by gas defects. A series of simulations were performed using the casting simulation program MAGMASOFT® in order to investigate the solidification characteristics as well as the porosity formation in the casting component.
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References
Casting Atlas of defects (1973) American Foundryman Society, pp 81–97
Atlas of Casting Defects (1961) Institute of British Foundryman, pp 1–24
Dawson JV, Kilshaw JA, Morgan AD (1965) The nature and origin of gas holes in iron castings. AFS Trans 73:224–240
Davidson MH, Chen FPH, Keverian J (1966) Solution to a nitrogen porosity problem in gray cast iron. The British Foundryman, p 141
Tonks WG (1956) Sub-surface blowholes in gray irons and their association with manganese sulphide segregation. AFS Trans 64:551
Hughes JCH (1969) The role of gases in the structure of cast iron. AFS Trans 77:121
Hernandes B, Wallace JF (1979) Mechanisms of pinhole formation in gray iron. AFS Res AFS Trans 87:335
Carter SF, Evans WJ, Harkness JC, Vallace JF (1979) Factors influencing the formation of pinholes in gray and ductile iron. AFS Trans 87:245
Kern R (1993) Controlling Cast Iron Fas Defects. Modern Casting (USA) 83(9):28–30
Naro RL et al (1983) Gas evolution of synthetic core binders: relationship to casting blowhole defects. AFS Trans 92:365
Dawson JV (1962) Pinhole defects. BCIRA, Report 653. 10(4):433
Naro RL et al (1977) Formation and control of lustrous carbon surface defects. AFS Trans 85:65
Stefanescu DM (2008) The effect of mould/metal interface phenomena on the surface quality of castings. In: Proceedings of the 10th Asian Foundry Congress (AFC 10), Nagoya, Japan, 21–24 May 2008, pp 23–30
Spengler AF, Ashley RA (1975) Ferrophosphorus additions reduce cost of cleaning gray iron castings. Mod Cast 65(5):52–54
Caspers KH (1975) Influence of steel scrap and burden additives in induction furnaces on the tendency for defect formation in cast iron. AFS Int Cast Met J 1976 Giesserei 62(8):186–1891975
Morita S, Inoyama N (1969) Behavior of nitrogen in cast iron. AFS Cast Met Res J 5(3):109
Acknowledgements
The author would like to thank Linnaeus University, Faculty of Technology, Department of Mechanical Engineering, Växjö, Sweden.
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Dugic, I. (2020). How to Prevent Gas Porosity Defects in Castings of Stator Housing in Grey Cast Iron. In: TMS 2020 149th Annual Meeting & Exhibition Supplemental Proceedings. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-36296-6_106
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DOI: https://doi.org/10.1007/978-3-030-36296-6_106
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