利用回收工艺从细金属馏分中制备铝铜复合材料的可能性

Ł. Wzorek, M. Wędrychowicz, M. Wiewióra, P. Noga, T. Skrzekut, A. Wzorek, K. Łyp-Wrońska
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引用次数: 0

摘要

高度破碎材料的塑性固结是回收铝合金的一种经济有效的方法。在这个过程中,碎片、粉末或带状形式的金属省略了传统废料回收中典型的熔化步骤;因此,它大大降低了能源消耗和材料损失。通过减少操作次数,可以降低人工成本和环境保护支出。此外,高度分散形式的金属的固体结合使我们能够创造出在传统工艺中难以获得的异质结构。本文研究了在热挤压过程中添加99.7 wt.%的铜粉对铝粉(99.7 wt.%)粘结质量的影响。检测的材料含有铝粉,并添加了5 wt.%的铜粉。这些粉末的混合物被冷压成80毫米长的装药,用于挤压过程。在300°、350°和400°C三种不同的温度下进行塑性固结。结果得到直径为8毫米的棒材。对挤压态材料进行了力学试验、微观结构观察和电导率试验。
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Possibility of Al-Cu composite manufacturing from fine metal fractions by recycling process
Plastic consolidation of highly fragmented materials is a cost-effective way to recover aluminum alloys. In this process, metal in the form of chips, powders, or ribbons omits the melting step that is typical for conventional scrap recycling; by that, it significantly reduces both energy expenses and material losses. By reducing the number of operations, the cost of labor and expenditures on environmental protection can be decreased. In addition, the solid bonding of metals in highly dispersed forms allows us to create heterogeneous structures that could be difficult to obtain in traditional processes. In the present study, the influence of the addition of Cu powder (99.7 wt.%) on the bonding quality of aluminum powder (99.7 wt.%) during hot extrusion is being examined. The examined materials contained aluminum powder with the addition of 5 wt.% of Cu powder. The mixture of these powders were cold compacted to produce an 80-mm-long charge for the extrusion process. Plastic consolidation was conducted at three different temperatures: 300°, 350°, and 400°C. As a result, rods 8 mm in diameter were obtained. Mechanical tests combined with microstructure observations and electrical conductivity tests were performed for the as-extruded materials.
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