Development of a material model for gas generation in inorganic foundry sands

无机铸造砂中气体产生的材料模型的开发

• 批准号: 445163571
• 负责人: Professor Dr.-Ing. Wolfram Volk
• 金额: --
• 依托单位: Lehrstuhl für Umformtechnik und Gießereiwesen
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2020
• 资助国家: 德国
• 起止时间: 2019-12-31 至 2023-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/445163571?language=en
• 关键词: Development; material; model; gas; generation

Stricter legal requirements and the associated need for eco-friendly production have led to the increasing use of inorganic instead of organically bound foundry sands in light metal casting. However, the processes of gas generation in inorganic foundry sands have not been further investigated so far, which currently leads to problems regarding gas porosity in castings. In this project, therefore, the relationship between the material properties of inorganic foundry sands and the gas generation during casting will be examined. Initially, relevant characteristic values of inorganic foundry sands will be investigated experimentally and their influence on the gas generation will be determined. Subsequently, a metamodel will be developed on the basis of the data obtained, which can be used to simulate the gas generation in inorganic foundry sands. Finally, the results of the simulations are validated using measurements from equivalent casting experiments.

更严格的法律要求和对环保生产的相关需求导致在轻金属铸造中越来越多地使用无机而不是有机结合的铸造砂。然而，迄今为止，无机铸造砂的产气过程尚未得到进一步的研究，这导致了目前铸件中气体孔隙率的问题。因此，在本项目中，将研究无机铸造砂的材料性能与铸造过程中产生的气体之间的关系。首先，对无机铸造砂的相关特征值进行实验研究，确定其对产气的影响。随后，将根据获得的数据建立一个元模型，该模型可用于模拟无机铸造砂的生气过程。最后，通过等效铸造试验验证了模拟结果。