Geometric Form of Gating System Elements and Its Influence on the Initial Filling Phase
Geometric Form of Gating System Elements and Its Influence on the Initial Filling Phase
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DOI：
10.1007/s11665-019-03973-9
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发表时间：
2019-07-01
影响因子：
2.3
通讯作者：
Tiedje, Niels Skat
中科院分区：
文献类型：
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作者：
Dojka, Rafal;Jezierski, Jan;Tiedje, Niels Skat
利用在岩浆中进行的数值模拟，研究了铸钢在24种浇注系统中的流动情况。研究的主要目的是确定浇注系统元素的几何形状对初始充型阶段动力学的影响，这对铸件质量是至关重要的。评估是基于流动动力学、最大高度和金属进入模具的速度。变量包括主流道和十字流道的几何形状，以及内门的几何形状、长度和膨胀。结果可以得出有价值的结论，这些结论可以导致铸件制造技术的改进。结果表明，采用适当的内浇口扩张和合适的浇注系统几何形式，可以显著降低金属进入型腔的速度，消除喷射现象，对铸件的安全性能有积极的影响。
Flow of cast steel through twenty-four variants of gating system was examined with the use of numerical modeling conducted in MAGMA. The main goal of the research was to determine the impact of the gating system elements' geometric form on the kinetics in the initial filling phase, which is crucial in terms of castings quality. The evaluation was based on flow kinetics, maximal height, and the velocity of metal entering the mold. The variables included the geometric form of the sprue and the cross runner, as well as geometric form, length, and expansion of the ingate. Results allow to form valuable conclusions that can lead to improvement in the castings manufacturing technology. Results show that application of proper expansion of the ingate and suitable geometric form of the gating system can significantly reduce the velocity of metal entering the mold cavity, as well as eradicate the jetting, which positively impacts the soundness of the casting.