The last two decades have seen a growing trend toward the use of inorganic binders in core making for the metalcasting field. Despite the health and environmental benefits of the inorganic binders, wider commercial use requires ongoing technical improvements to address some potential inherent limitations of this technology. Considering that inorganic cores can suffer from storage stability, this study sets out to check whether inorganic core binders are fit to replace organic ones in producing a gravity diecasting Al alloy component. First, the humidity resistance of both organic and inorganic sand cores, within a typical time-frame storage in the foundry, was evaluated by moisture absorption tests. Then, 3D optical measurements were performed to assess the relative dimensional changes of inorganic cores. Last, the influence of the core system was analyzed through microstructural and mechanical investigations on castings manufactured by using organic and inorganic binders. The experimental findings have shown that the moisture absorption during storage in the foundry warehouse, which lasted up to 14 days, was not enough to jeopardize the functionality of the cores. Furthermore, the tensile and microstructural outcomes revealed that inorganic cores could comply with both high component design requirements and even more stringent environmental regulations of foundries.

在过去的二十年里，在金属铸造领域的制芯中使用无机粘合剂的趋势越来越大。尽管无机粘合剂对健康和环境有益，但更广泛的商业用途需要持续的技术改进，以解决该技术的一些潜在固有局限性。考虑到无机核会受到储存稳定性的影响，本研究着手检查无机核粘合剂是否适合在生产重力压铸铝合金部件时替代有机粘合剂。首先，有机和无机砂芯的耐湿性，在铸造厂的典型时间范围内，通过吸湿测试进行评估。然后，进行 3D 光学测量以评估无机核的相对尺寸变化。最后的，通过对使用有机和无机粘合剂制造的铸件进行微观结构和机械研究，分析了核心系统的影响。实验结果表明，在铸造仓库中存放长达 14 天的吸潮并不足以危及磁芯的功能。此外，拉伸和微观结构结果表明，无机芯可以符合高组件设计要求和铸造厂更严格的环境法规。不足以危及内核的功能。此外，拉伸和微观结构结果表明，无机芯可以符合高组件设计要求和铸造厂更严格的环境法规。不足以危及内核的功能。此外，拉伸和微观结构结果表明，无机芯可以符合高组件设计要求和铸造厂更严格的环境法规。