Prediction of Core Fracture during Decoring of Cast Components

在环保法规和无健康和环境风险的生产目标的推动下，轻金属铸造厂正在使用越来越多的无机粘结砂芯。与有机结合的核心相比，它们排放的有害气体要少得多。无机结合型芯的一个缺点是脱芯过程更复杂和紧张。出于这个原因，拟议的项目旨在开发一种计算方法，以预测在脱芯过程中的岩心断裂。这允许优化去芯过程，从而减少铸造部件上的应变。为了实现这一目标，正在开发所有必要材料特性的测量方法。为了验证，在实验和模拟中，用脉冲对原始铸造部件的铝砂复合材料进行应变。

Driven by environmental laws and the goal of a production without health and environmental risks, light metal foundries are using more and more inorganically bonded sand cores. In contrast to organically bonded cores, they emit considerably less harmful gasses. One disadvantage of inorganically bonded cores is the more complex and straining decoring process. For this reason the proposed project is aiming at the development of a computational method to predict the core fracture during the decoring process. This allows to optimize the decoring process, resulting in reduced strain on the cast component. In order to achieve this, measuring methods for all necessary material properties are being developed. For validation, the aluminium sand composite of the raw casting component is strained with pulses, both in experiment and in simulation.