Predicting weld-quality in direct hot extrusion of aluminium chips
Predicting weld-quality in direct hot extrusion of aluminium chips
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DOI：
10.1016/j.jmatprotec.2019.116294
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发表时间：
2019-12-01
影响因子：
6.3
通讯作者：
Tekkaya, A. Erman
中科院分区：
文献类型：
--
作者：
Kolpak, Felix;Schulze, Andre;Tekkaya, A. Erman
基于库珀和Allwood提出的焊缝强度物理模型，提出了一种预测铝屑直接热挤压成形成功率的焊缝质量模型。验证结果对各种文献的结果，以及对额外的热挤压实验的结果，利用平面模具生产的圆棒和舷窗模具生产的中空型材。本文以AA6060铝合金切屑为例，介绍了一种确定工艺成功所需的最低焊接质量值的方法。焊接模型可用于节省时间和成本消耗的试验，这可能使该工艺成为传统热挤压的替代品，因为它在复杂型材的生产中具有明显的环境效益。
Based on a physically motivated weld strength model by Cooper and Allwood a weld quality model for the prediction of the process success in direct hot extrusion of aluminium chips is presented. The results are validated against a variety of literature results as well as against the results of additional hot extrusion experiments utilizing flat-face dies for the production of round bars and porthole dies for the production of hollow profiles. A procedure is presented to determine the minimum required weld quality value necessary to provide a process success by the example of chips made of the aluminium alloy AA6060. The weld model can be used to save time-and cost-consuming experimental try-outs, which may make the process an alternative to conventional hot extrusion due to its clear environmental benefits in the production of complex profiles.