Noga Piotr, Piotrowicz Andrzej, Skrzekut Tomasz, Zwoliński Adam, Strzępek Paweł
Faculty of Non-Ferrous Metals, AGH University of Science and Technology, A. Mickiewicz Av. 30, 30-059 Cracow, Poland.
Materials (Basel). 2021 Sep 4;14(17):5066. doi: 10.3390/ma14175066.
This article presents a method of reusing aluminum scrap from alloy 6082 using the hot extrusion process. Aluminum chips from milling and turning processes, having different sizes and morphologies, were cold pressed into briquettes prior to hot pressing at 400 °C at a ram speed of 2 mm/s. The study of mechanical properties combined with observations of the microstructures, as well as tests of density, hardness and electrical conductivity were carried out. On the basis of the results, the possibility of using the plastic consolidation method and obtaining materials with similar to a solid ingot mechanical properties, density and electrical conductivity was proven. The possibility of modifying the surface of consolidated aluminum scrap was tested in processes examples: polishing, anodizing and coloring. For this purpose, a number of analyses and tests were carried out: comparison of colors on color histograms, roughness determination, SEM and chemical composition analysis. It has been proven there are differences in the surface treatment of the solid material and that of scrap consolidation, and as such, these differences may significantly affect the final quality.
本文介绍了一种利用热挤压工艺再利用6082合金废铝的方法。将铣削和车削加工过程中产生的尺寸和形态各异的铝屑在400℃下以2mm/s的压头速度进行热压之前先冷压成块。进行了机械性能研究，并结合微观结构观察以及密度、硬度和电导率测试。基于这些结果，证明了使用塑性固结法并获得具有与实心锭相似的机械性能、密度和电导率的材料的可能性。在以下工艺示例中测试了改性固结废铝表面的可能性：抛光、阳极氧化和着色。为此，进行了多项分析和测试：颜色直方图上颜色的比较、粗糙度测定、扫描电子显微镜（SEM）和化学成分分析。已证明实心材料和废铝固结材料的表面处理存在差异，因此，这些差异可能会显著影响最终质量。
