The Influence of Thermal Expansion of Unbonded Foundry Sands on the Deformation of Resin Bonded Cores

• Autorzy: Svidró J. , Diószegi A. , Tóth L. , Svidró J. T.

Identyfikatory

DOI

10.1515/amm-2017-0118

• Języki publikacji: EN

Abstrakty

EN

Depending on the preparation and the applied materials, moulds and cores can be of high rigidity or can be flexible. Although, chemically bonded moulding materials have relatively good flexibility, their high temperature behaviour determines the dimensional accuracy, the stresses in the castings and can induce several casting defects, such as rattail, veining, etc. The phenomenon is based on two major effects: the thermal expansion of the unbonded foundry sands and the deformation of the sand mixtures. The main objective of the present work was to study the relationship between these two effects, and to improve the knowledge related to the thermo-mechanical interactions between the casting and the mould. Dilatometric analysis of unbonded sand samples were performed and compared to the results of hot distortion tests of moulding mixture specimens. The results showed, that the thermal expansion of foundry sand largely influences the hot distortion behaviour, but depending on the type of binder used.

Słowa kluczowe

EN

foundry sand; hot distortion; moulding material; phenolic resin; thermal expansion

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2017
• Tom: Vol. 62, iss. 2A
• Strony: 795--798
• Opis fizyczny: Bibliogr. 17 poz., rys., tab.

Twórcy

autor

Svidró J.

• Jönköping University School of Engineering, Department of Materials and Manufacturing, Jönköping, Sweden

autor

Diószegi A.

• Jönköping University School of Engineering, Department of Materials and Manufacturing, Jönköping, Sweden

autor

Tóth L.

• University of Miskolc, Department of Foundry Technology, Miskolc, Hungary

autor

Svidró J. T.

• Jönköping University School of Engineering, Department of Materials and Manufacturing, Jönköping, Sweden

Bibliografia

• [1] R. A. Kleiv, Int. J. Min. Met. Mater. 19 (3), 185 (2012).
• [2] M. Břuska, J. Beňo, M Cagala, V Jasinková, Arch. Foundry Eng. 12 (2), 9-14 (2012).
• [3] J. R. Brown, Foseco Ferrous Foundryman’s Handbook (2000).
• [4] S. Hass, Giesserei lexikon, p. 704. (2008).
• [5] American Foundry Society, Mold & Core Test Handbook, 4th edition, 2014.
• [6] J. Thiel, M. Ziegler, P. Dziekonski, S. Joyce, Trans. Amer. F. 117, 383-400 (2007).
• [7] S. I. Bakhtiyarov, R.A. Overfelt, D. Wang, Int. J. Thermophys. 26 (1), 141-149 (2005).
• [8] F. Peters, R. Voigt, S.Z. Ou, C. Beckermann, Int. J. Cast Metal. Res. 20 (5), 275-287 (2007).
• [9] Z. Ignaszak, P. Popielarski, Defect Diffus. Forum 283-286, 382-387 (2009).
• [10] Z. Ignaszak, J.B. Prunier, Arch. Foundry Eng. 13, 30-36 (2013).
• [11] Z. Ignaszak, P. Popielarski, T. Strek, Defect Diffus. Forum 312-315, 764-769 (2011).
• [12] Z. Ignaszak, Arch. Foundry Eng. 76 (4), 69-76 (2010).
• [13] S. McIntyre, S.M. Strobl, Foundry Manage. Technol. 126 (3), 22-27 (1998).
• [14] J. Jakubski, S.M. Dobosz, Arch. Metall. Mater. 52 (3), 421-427 (2007).
• [15] S. M. Dobosz, D. Drozynski, J. Jakubski, K. Major-Gabrys, Arch. Metall. Mater. 59 (3), 1093-1096 (2014).
• [16] S. M. Dobosz, A. Grabarczyk, K. Major-Gabryś, J. Jakubski, Arch. Foundry Eng. 15 (2), 9-12 (2015).
• [17] J. Zych, J. Mocek, Arch. Foundry Eng. 15 (4), 95-100 (2015).

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).