Numerical optimization of gating system parameters for a magnesium alloy casting with multiple performance characteristics

Sun, Zhi‐zhong; Hu, Henry; Chen, Xiang

doi:10.1016/j.jmatprotec.2007.08.036

Cited by 69 publications

(33 citation statements)

References 7 publications

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“…Exone 等公司开发出相应打印设备并投入应用。在砂模 3D 打印技术工程应用中，传统砂模所存在的冗余结构会增加打印机工作量与生产成本，进而降低生产效率。因此在新工艺环境下，有必要对砂模本身进行优化设计。当前在砂模设计优化领域，国内外对于砂模本身的相关研究很少，主要集中在浇注系统 [7][8][9][10] 与铸件外形 [11][12][13][14] 这两部分。唐华林 [15] 利用可变容积砂箱和模块组合实现砂模外形的优化；而 BALTES 等 [16] 则对砂模形状造成的强度影响进行了分析。然而砂模存在冗余结构这一问题未得到解决。对于 3D 打印砂模结构的研究尚处于起步阶段。CURODEAU 等 [17] 根据材料强度以及填充压力等约束条件确定了骨科植入物模具的设计尺寸范围； BASSOLI 等 [18] 则对设机械变形的许用系数为 k，|y max |≤kL，所以 …”

Section: 具有了进一步优化砂模几何形体的能力。目前在国内外，已有诸如峰华卓立、Voxeljet、unclassified

Research on Optimum Structure Design of 3D Printed Sand Moulds

Yang¹

2017

JME

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Abstract：As a novel rapid prototyping sand casting method, 3D-printing is capable of producing any complex mould, which makes further structure optimization of the sand mould possible. Because of the connection between the production speed of 3D-printing and the structure of mould, it is necessary to optimize structure of 3D printed sand mould. In this situation, an optimum design method of the 3D printed sand mould is established, and the design process is introduced. Based on the mechanical property requirements, the thickness of the sand mould is taken as the optimization parameter, and the optimum design model is established.In the end, the optimum design of the casting sample is completed. Results show that the volume of the sand mould is reduced by 42.6% after optimum structure design, thus the efficiency of production is raised, and the cost of the resin-bonded sand is reduced. Key words：sand

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Section: 具有了进一步优化砂模几何形体的能力。目前在国内外，已有诸如峰华卓立、Voxeljet、unclassified

Research on Optimum Structure Design of 3D Printed Sand Moulds

Yang¹

2017

JME

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“…Reactive materials and the problem of gassing systems is also addressed by Zhizhong Sun, Henry Hu and Xiang Chen. The various gating systems for a casting model of magnesium alloy were designed and simulated with the MAGMASOFT ® [3].…”

Section: Introductionmentioning

confidence: 99%

Importance of a Type of Gating System in Investment Casting Technology

Vratny

Herman

2019

Acta Polytech

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At present, there is an increasing demand for the Investment casting technology. It is necessary to ensure their dimensional accuracy as well as internal quality and their desired macrostructure and microstructure. This paper deals with the issue of filling ceramic shells and their influence on the occurrence of oxide inclusions. The aim is to compare several proposed ceramic systems with top and bottom filling of a shell consisting of 4 blades and a gating system in terms of turbulence and monitoring of the contact line between the melt and the surrounded air.

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“…Their results were found to be in a good agreement with their experimental validation. An interesting optimisation case study has been performed by Sun et al [13]. They optimised the geometrical parameters of a magnesium alloy casting gating system using the Taguchi method [14].…”

Section: Introductionmentioning

confidence: 99%

Design Optimisation of the Feeding System of a Novel Counter-Gravity Casting Process

Papanikolaou

Pagone

Georgarakis

et al. 2018

Metals

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The appropriate design of feeders in a rigging system is critical for ensuring efficient compensation for solidification shrinkage, thus eliminating (shrinkage-related) porosity and contributing to the production of superior quality castings. In this study, a multi-objective optimisation framework combined with Computational Fluid Dynamics (CFD) simulations has been introduced to investigate the effect of the feeders’ geometry on shrinkage porosity aiming to optimise casting quality and yield for a novel counter-gravity casting process (CRIMSON). The weighted sum technique was employed to convert this multi-objective optimisation problem to a single objective one. Moreover, an evolutionary multi-objective optimisation algorithm (NSGA-II) has been applied to estimate the trade-off between the objective functions and support decision makers on selecting the optimum solution based on the desired properties of the final casting product and the process characteristics. This study is one of the first attempts to combine CFD simulations with multi-objective optimisation techniques in counter-gravity casting. The obtained results indicate the benefits of applying multi-objective optimisation techniques to casting processes.

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Numerical optimization of gating system parameters for a magnesium alloy casting with multiple performance characteristics

Cited by 69 publications

References 7 publications

Research on Optimum Structure Design of 3D Printed Sand Moulds

Research on Optimum Structure Design of 3D Printed Sand Moulds

Importance of a Type of Gating System in Investment Casting Technology

Design Optimisation of the Feeding System of a Novel Counter-Gravity Casting Process

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