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首页> 外文期刊>Journal of Materials Engineering and Performance >Optimization of Gating System Design for Die Casting of Thin Magnesium Alloy-Based Multi-Cavity LCD Housings
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Optimization of Gating System Design for Die Casting of Thin Magnesium Alloy-Based Multi-Cavity LCD Housings

机译：基于薄镁合金的多腔LCD外壳压铸浇铸系统设计的优化

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摘要

High-pressure die casting is the preferred process for manufacturing Mg-alloy components used for numerous applications. High-pressure die casting is suitable for mass production and has the advantage of also being suitable for accurately fashioning objects of complicated shapes. One disadvantage of high-speed die casting is the occurrence of defects such as shrinkage or air entrainment. Gating system design must be very effective in actual manufacturing facilities to avoid the occurrence of such defects. The objective of this study is to present a methodology for obtaining optimal designs of 4-cavity thin electronic component housings. The fluid behavior and amount of air entrainment caused by the overflows and air vent designs were analyzed using a computer fluid dynamics (CFD) simulator. The effectiveness of the proposed system was demonstrated through CFD simulations and experiments using an actual manufacturing process. Also, the effect of vacuum systems on the porosity and mechanical properties of the castings was studied. The volume of porosity in the casting was found to be significantly reduced using vacuum assistance during die casting. As a result, the tensile strength and the elongation of the die casting products are improved.
机译：高压压铸是制造用于多种应用的镁合金部件的首选工艺。高压压铸适合于批量生产，并且具有还适合于精确地成型复杂形状的物体的优点。高速压铸的一个缺点是出现诸如收缩或夹带空气的缺陷。门控系统设计必须在实际的生产设施中非常有效，以免发生此类缺陷。这项研究的目的是提出一种获得4腔薄型电子元件外壳最佳设计的方法。使用计算机流体动力学（CFD）模拟器分析了由溢流和通风口设计引起的流体行为和空气夹带量。通过使用实际制造过程的CFD模拟和实验证明了所提出系统的有效性。此外，研究了真空系统对铸件的孔隙率和机械性能的影响。发现在压铸过程中使用真空辅助可以显着降低铸件中的孔隙体积。结果，提高了压铸产品的拉伸强度和伸长率。

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