Design and optimization of runner and gating systems, in high-pressure casting and sand casting, for an aluminum alloy valve cover

Yıl 2023, Cilt: 12 Sayı: 4, 154 - 164, 30.12.2023

Alen Murat Kuyumcu , Yuşa Haktanır

https://doi.org/10.18245/ijaet.1200972

Öz

The weight and speed advantage of aluminum die-casting leads to its use in many parts in the automotive industry. Casting simulation programs are used, to avoid time-consuming and expensive production costs, and to design the production process. For casting production one of the most important factors is the runner design, which directly affects castability, material selection, and casting quality. With the correct design of runner systems, there will be no problem with the casting part. In this study, the final part and the runner design for the aluminum alloy valve cover were modeled in CAD, according to the empirical calculations. Furthermore, an appropriate casting method was selected for the valve cover not only according to the results of both high-pressure die-casting and sand-casting simulations but also economic calculations. The main technical parameters for selection were mold and part temperature distribution, liquid metal flow rates, cold shut possibilities, final air quantities, microporosity, and microporosity values. After the final decision, the casting part was produced with high pressure die casting by the implementation of the final runner design.

Anahtar Kelimeler

High pressure die casting, Sand casting, Casting simulation, Runner design, Aluminum alloy

Kaynakça

• Suresha S, Pawan H. Numerical simulation aided design of heat sink using Z-cast. Mater Today Proc, vol. 45, Elsevier Ltd; p. 404–11, 2020. https://doi.org/10.1016/j.matpr.2020.12.758.
• Papai J. Contact heat transfer coefficients in aluminum alloy die casting: An experimental and numerical investigation. Doctoral dissertation. Ohio State University, 1994.
• Patnaik L, Saravanan I, Kumar S. Die casting parameters and simulations for crankcase of automobile using MagmaSoft. Mater Today Proc, vol. 22, Elsevier Ltd; p. 563–71, 2020. https://doi.org/10.1016/j.matpr.2019.08.208.
• Jadhav AR, Hujare DP, Hujare PP. Design and optimization of gating system, modification of cooling system position and flow simulation for cold chamber high pressure die casting machine. Mater Today Proc, vol. 46, Elsevier Ltd; p. 7175–81, 2021. https://doi.org/10.1016/j.matpr.2020.11.346.
• Ramnath BV, Elanchezhian C, Chandrasekhar V, Kumar AA, Asif SM, Mohamed GR, et al. Analysis and Optimization of Gating System for Commutator End Bracket. Procedia Materials Science, 6:1312–28, 2014. https://doi.org/10.1016/j.mspro.2014.07.110.
• Sulalman S, Chee Keen T, Pertanian Malaysia U, Malaysia S. Flow analysis along the runner and gating system of a casting process. vol. 63. 1997.
• Kumar R, Madhu S, Aravindh K, Jayakumar V, Bharathiraja G, Muniappan A. Casting design and simulation of gating system in rotary adaptor using Procast software for defect minimization. Mater Today Proc, vol. 22, Elsevier Ltd; p. 799–805, 2020. https://doi.org/10.1016/j.matpr.2019.10.156.
• Dai X, Yang X, Campbell J, Wood J. Effects of runner system design on the mechanical strength of Al-7Si-Mg alloy castings. Materials Science and Engineering A, 354:315–25, 2003. https://doi.org/10.1016/S0921-5093(03)00021-2.
• Hu BH, Tong KK, Niu XP, Pinwill I. “Design and optimisation of runner and gating systems for the die casting of thin-walled magnesium telecommunication parts through numerical simulation”, Journal of Materials Processing Technolog, 105(1-2):128-133, 2000.
• Zheng K, Lin Y, Chen W, Liu L. Numerical simulation and optimization of casting process of copper alloy water-meter shell. Advances in Mechanical Engineering, 12, 2020. https://doi.org/10.1177/1687814020923450.
• Dubey S, Swain SR. Numerical investigation on solidification in casting using ProCast. IOP Conf Ser Mater Sci Eng, vol. 561, Institute of Physics Publishing; 2019. https://doi.org/10.1088/1757-899X/561/1/012049.
• Long A., Thornhill D., Armstrong C. and Watson D., The Impact of Die Start-Up Procedure for High Pressure Die Casting. SAE International Journal of Materials and Manufacturing. Vol. 6, No.3, June 2013. https://doi.org/10.4271/2013-01-0829
• Andresen, B., “Die Casting Engineering”. New York: Marcel Dekker, ISBN : 0-8247-5935-4, 2005.
• Klobcar, D and Tusek, J. “Thermal stresses in aluminum alloy die casting dies”. Computation Materials Science. 43, 2008. https://doi.org/10.1016/j.commatsci.2008.03.009