Dojka Rafał, Jezierski Jan, Szucki Michał
ODLEWNIA RAFAMET Sp. z o.o., 1 Staszica, Kuźnia, 47-420 Raciborska, Poland.
Department of Foundry Engineering, Silesian University of Technology, 7 Towarowa, 44-100 Gliwice, Poland.
Materials (Basel). 2022 Jul 15;15(14):4937. doi: 10.3390/ma15144937.
This article presents the results of experiments on the optimization of down sprue geometry in the process of pouring sand molds. Theoretical assumptions and computer simulation tests are presented. The starting point was the theory and experience of gas entrapment caused mainly by a poorly designed gating system and the down sprue. Simulations were performed using Magmasoft software. First, initial studies were carried out to determine how the geometry (mainly the channel cross-section) of the sprue affects the problem, and then a detailed experiment was carried out on the so-called 'short sprue' version. The air entrapment process was analyzed, as were the parameters of the liquid alloy flow that passes through the analyzed channels. Nine geometric versions of the sprue were proposed and analyzed, and the results allowed us to conclude which sprue geometry is the best from the point of view of minimization of the gas entrapment problem.
本文介绍了在砂型铸造过程中优化直浇道几何形状的实验结果。文中给出了理论假设和计算机模拟测试。出发点是主要由设计不佳的浇注系统和直浇道导致气体截留的理论和经验。使用Magmasoft软件进行了模拟。首先，进行了初步研究以确定直浇道的几何形状（主要是通道横截面）如何影响该问题，然后对所谓的“短直浇道”版本进行了详细实验。分析了气体截留过程以及通过分析通道的液态合金流动参数。提出并分析了直浇道的九种几何版本，结果使我们能够从最小化气体截留问题的角度得出哪种直浇道几何形状最佳的结论。
