In-house Recycling of Aluminum A380 Machining Chips

铝 A380 加工切屑的内部回收

• 批准号: 455278-2013
• 负责人: Hu, HongfaHenry
• 金额: $ 1.82万
• 依托单位: University of Windsor
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=541890
• 关键词: house; Recycling; Aluminum; A380; Machining

In the past two decades, aluminum alloys as a light weight material have been increasingly used in the automotive industry. Worldwide average aluminum content was 7.8% of the average worldwide light vehicle curb weight of 3,183 pounds in 2009. North America (NA) has the highest aluminum penetration at 8.6% of N.A. curb weight in the world. The usage of aluminum in NA automobiles has gone from 45kg (101 lbs) in the 1970s to 150 kg (326 lbs) in 2009, and will top 250 kg (550 lbs) per vehicle by 2025. Among the 150 kg aluminum usage in each vehicle, almost 35% of automotive aluminum components were manufactured by conventional high pressure die-casting (C-HPDC) processes. When C-HPDC components are manufactured, considerable amount of aluminum waste in the form of scrap, dross, and machining chips is produced as byproducts. The casting scrap is easily returned to melting, whereby most of the metal is recovered and re-utilized in production processes. The recovery of aluminum from dross can be achieved at a recovery rate of over 80% by mixing the dross with certain types of fluxes. During the recycling of dross and chips, however, a lot of metal is lost as a result of oxidation, and the costs of labor and energy as well as the expenditure on environmental protection increase the general cost of the process. The objective of this project is to carry out a feasibility study on in-house recycling of aluminum A380 machining chips with good metal quality and energy efficiency. The scope of the project includes comprehensive literature review, selection of chemical solution, cleaning, compacting and refining machining chips, casting recovered alloys, and microstructural analyses and mechanical property evaluation of the recovered alloy A380.

近二十年来，铝合金作为一种轻质材料在汽车工业中得到越来越多的应用。 2009 年，全球平均轻型车辆整备重量（3,183 磅）的全球平均铝含量为 7.8%。北美 (NA) 的铝渗透率最高，为北美整备重量的 8.6%。 北美汽车的铝用量已从 1970 年代的 45 公斤（101 磅）增加到 2009 年的 150 公斤（326 磅），到 2025 年每辆车的铝用量将达到 250 公斤（550 磅）。每辆车的 150 公斤铝用量中，近 35% 的汽车铝部件是通过传统高压压铸制造的 （C-HPDC）工艺。 在制造 C-HPDC 部件时，会产生大量以废料、浮渣和加工切屑形式存在的铝废料作为副产品。 铸造废料很容易返回熔化状态，从而在生产过程中回收并重新利用大部分金属。 通过将浮渣与某些类型的熔剂混合，可以实现从浮渣中回收铝，回收率可达80%以上。 然而，在废渣和切屑的回收过程中，大量金属因氧化而损失，劳动力和能源成本以及环保支出增加了该过程的总体成本。 该项目的目标是对具有良好金属质量和能源效率的铝 A380 加工碎片进行内部回收的可行性研究。 该项目范围包括综合文献查阅、化学溶液的选择、加工切屑的清理、压实和精炼、铸造回收合金以及回收合金A380的显微组织分析和力学性能评价。