The Influence of Riser Shape on Feeding Effectiveness of Solidifying Casting

• Autorzy: Sowa L. , Skrzypczak T. , Kwiatoń P.

Identyfikatory

DOI

10.24425/afe.2019.129636

• Języki publikacji: EN

Abstrakty

EN

The mathematical model and numerical simulations of the solidification of a cylindrical shaped casting, which take into account the process of filling the mould cavity by liquid metal and feeding the casting through the riser during its solidification, are presented in the paper. Mutual dependence of thermal and flow phenomena were taken into account because have an essential influence on solidification process. The effect of the riser shape on the effectiveness of feeding of the solidifying casting was determined. In order to obtain the casting without shrinkage defects, an appropriate selection of riser shape was made, which is important for foundry practice. Numerical calculations of the solidification process of system consisting of the casting and the conical or cylindrical riser were carried out. The velocity fields have been obtained from the solution of momentum equations and continuity equation, while temperature fields from solving the equation of heat conductivity containing the convection term. Changes in thermo-physical parameters as a function of temperature were considered. The finite element method (FEM) was used to solve the problem.

Słowa kluczowe

EN

solidification process; castings defects; numerical simulation; liquid metal flow

PL

proces krzepnięcia; wady odlewów; symulacja numeryczna; przepływ ciekłego metalu

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2019
• Tom: iss. 4
• Strony: 91--94
• Opis fizyczny: Bibliogr. 11 poz., rys.

Twórcy

autor

Sowa L.

• Institute of Mechanics and Machine Design Fundamentals, Częstochowa University of Technology, Częstochowa, Poland

autor

Skrzypczak T.

• Institute of Mechanics and Machine Design Fundamentals, Częstochowa University of Technology, Częstochowa, Poland

autor

Kwiatoń P.

• Institute of Mechanics and Machine Design Fundamentals, Częstochowa University of Technology, Częstochowa, Poland

Bibliografia

• [1] Perzyk, M., Kochański, A., Mazurek, P. & Karczewski K. (2014). Selected principles of feeding systems design: simulation vs industrial experience. Archives of Foundry Engineering. 14(4), 77-82.
• [2] Nimbulkar, S.L. & Dalu R.S. (2016). Design optimization of gating and feeding system through simulation technique for sand casting of wear plate. Perspectives in Science. 8, 39-42. DOI: https://doi.org/10.1016/j.pisc.2016.03.001.
• [3] Nadolski, M., Zyska, A., Konopka, Z., Łągiewka, M. & Karolczyk J. (2011). The assessment of bell casting producibility based on computer simulation of pouring and solidification. Archives of Foundry Engineering. 11(3), 141-144.
• [4] Cholewa, M. & Szuter T. (2013). Shape complicated casting defects prediction based on computer simulation. Archives of Metallurgy and Materials. 58(3), 859-862. DOI: https:// doi.org/10.2478/amm-2013-0087.
• [5] Szajnar, J., Wróbel, T. & Dulska A. (2017). Manufacturing methods of alloy layers on casting surfaces. Journal of Casting & Materials Engineering. 1(1), 2-6. DOI: doi.org/ 10.7494/jcme.2017.1.1.2.
• [6] Jezierski, J., Dojka, R. & Janerka K. (2018). Optimizing the gating system for steel castings. Metals. 8(4), 266. DOI: doi.org/10.3390/met8040266.
• [7] Huang, P.H. & Lin C-J. (2015). Computer-aided modeling and experimental verification of optimal gating system design for investment casting of precision rotor. International Journal of Advanced Manufacturing Technology. 79(7-8), 997-1006. DOI: 10.1007/s00170-015-6897-5.
• [8] Huang, P.H., Kuo, J.K., Fang, T.H. & Wu W. (2018). Numerical simulation and design of casting system for stainless steel exhaust manifold. MATEC Web of Conferences. 185. DOI: 10.1051/matecconf/ 201818500008.
• [9] Dyja, R., Gawrońska, E. & Grosser A. (2018). A computer simulation of solidification taking into account the movement of the liquid phase. MATEC Web of Conferences. 157. DOI: 10.1051/matecconf/201815702008.
• [10] Sowa, L., Skrzypczak, T. & Kwiatoń P. (2019). Computer evaluation of the influence of liquid metal movements on defects formation in the casting. MATEC Web of Conferences. 254. DOI: 10.1051/matecconf/ 201925402017.
• [11] Skrzypczak, T., Węgrzyn-Skrzypczak, E. & Sowa L. (2018). Numerical modeling of solidification process taking into account the effect of air gap. Applied Mathematics and Computation. 321, 768-779. DOI: 10.1016/j.amc. 2017.11.023.

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019)