HUBUNGAN NILAI CE DENGAN LAPISAN KULIT THIN WALL DUCTILE IRON
Article Sidebar
Main Article Content
Abstract
The formation of skin effects in nodular cast iron produced using sand molds is a general problem. Since it can be cleaned during the machining process along with gating system removal. Skin effects become a problem when they form in nodular cast iron thin wall castings. In thin-wall castings, the skin effect becomes a problem because the cleaning process is difficult to perform. Therefore, a mechanism is needed to avoid the formation of skin effects in nodular cast iron thin wall castings. This work is carried out to see the effects of carbon equivalent (CE) as one of the important parameters during the casting process to the formation of skin effects, especially when the cast object produced is a component. Molten metals with different CE values are used to make thin wall ductile iron connecting rod components. Microstructure observations were carried out both in the I-beam and end-rod areas. Then the results obtained are compared with the previous research regarding the skin effects formed in thin-wall ductile iron plates. The result obtained is that the skin effects detected in thin-wall ductile iron connecting rods with different types of patterns and thicknesses from that formed on the plate.
Article Details
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
References
G. M. Goodrich and R. W. Lobenhofer, “Effect of cooling rate on ductile iron mechanical properties,” in Transactions of the American Foundry Society and the One Hundred Sixth Annual Casting Congress, 2002, pp. 1003–1032.
L. P. Dix, R. Ruxanda, J. Torrance, M. Fukumoto, and D. M. Stefanescu, “Static mechanical properties of ferritic and pearlitic lightweight ductile iron castings,” AFS Transactions, vol. 111, pp. 1149–1164, 2003.
S. Boonmee and D. M. Ştefănescu, “The mechanism of formation of casting skin in CG iron and its effect on tensile properties,” Key Eng Mater, vol. 457, pp. 11–16, 2011.
S. Boonmee, M. K. Moran, and D. M. Stefanescu, “On the effect of the casting skin on the fatigue properties of CG iron,” AFS Transactions, vol. 119, pp. 421–430, 2011.
S. Boonmee and D. M. Stefanescu, “The Effect of Nodularity and Surface Condition on the Fatigue Properties of CG Iron,” AFS Trans, vol. 119, pp. 205–2016, 2012.
R. Ruxanda, D. Stefanescu, and T. S. Piwonka, “Microstructure Characterization of Ductile Thin Wall Iron Castings,” in Transactions of the American Foundry Society, vol. 110, 2002, pp. 1131–1147.
R. C. Aufderheide, R. E. Showman, and M. A. Hysell, “05-043 Controlling the" Skin Effect" on Thin-Wall Ductile Iron Castings,” Transactions-American Foundrymens Society, vol. 113, p. 567, 2005.
S. Boonmee and D. Stefanescu, “On the mechanism of casting skin formation in compacted graphite cast iron,” International Journal of Metalcasting, vol. 3, pp. 19–24, 2009.
D. Stefanescu, S. Wills, J. Massone, and F. Duncan, “Quantification of casting skin in ductile and compacted graphite irons and its effect on tensile properties,” International Journal of Metalcasting, vol. 2, pp. 7–28, 2008.
G. M. Goodrich, “Explaining the peculiar: cast iron anomalies and their causes,” Modern casting, vol. 88, no. 4, pp. 40–42, 1998.
S. Boonmee, B. Gyesi, and D. M. Stefanescu, “Casting skin of compacted graphite iron part I: evaluation and mechanism for formation,” AFS Transactions, vol. 118, pp. 205–216, 2010.
S. Boonmee and D. M. Stefanescu, “Casting skin management in compacted graphite iron. Part II: Mechanism of casting skin formation,” AFS Trans, vol. 121, pp. 449–459, 2013.
R. Sulamet-Ariobimo and J. Wahyuadi, “Effect of Plate Thickness and Casting Position on Skin Effect Formation in Thin Wall Ductile Iron Plate,” International Journal of Technology, vol. 7, p. 374, Nov. 2016, doi: 10.14716/ijtech.v7i3.2844.
R. D. Sulamet-Ariobimo, M. Fadhlan, Y. Oktaviano, T. Sukarnoto, Y. Mujalis, and A. Witonohadi, “The effects of I-Beam thickness to microstructure and compression load of thin wall ductile iron connecting rod,” International Journal of Lightweight Materials and Manufacture, vol. 6, no. 3, pp. 392–404, Sep. 2023, doi: 10.1016/j.ijlmm.2023.01.001.
R. Martinez, R. A. Martínez, R. E. Boeri, and J. A. Sikora, “EXPERIMENTAL Y MODELADO COMPUTACIONAL MULTI-ESCALA View project Applications of ADI in high strength thin wall automotive parts,” 2002, Accessed: Nov. 17, 2022. [Online]. Available: https://www.researchgate.net/publication/266186440
D. M. Stefanescu, G. Alonso, and R. Suarez, “Recent developments in understanding nucleation and crystallization of spheroidal graphite in iron-carbon-silicon alloys,” Metals (Basel), vol. 10, no. 2, p. 221, 2020.