期刊
INTERNATIONAL JOURNAL OF MATERIAL FORMING
卷 3, 期 -, 页码 853-856出版社
SPRINGER FRANCE
DOI: 10.1007/s12289-010-0904-z
关键词
Aluminum; Recycling; Extrusion; Chips; Aluminum scrap
类别
资金
- German Research Foundation, DFG [Te 508/12-1]
In this paper, a method for the direct recycling of aluminum scrap by hot extrusion is investigated. 1050 aluminum alloy material in the form of pins remained as scrap after a lateral extrusion process and was mixed with 6060 aluminum alloy chips resulting from a turning operation. Contrary to the conventional method of re-melting aluminum scrap to produce secondary aluminum, this aluminum scrap+chip mixture was cold compacted into billets and hot extruded at 500 C to full rectangular profiles. The extruded profiles were examined by tensile tests and microstructural investigations and compared to the conventionally extruded profiles from as-cast material. It was shown that not only the aluminum chips but also the aluminum scrap material can be recycled directly by hot extrusion, which requires only similar to 10% of the energy required for recycling by re-melting. Also, the profiles extruded from billets containing 1050 aluminum alloy scrap with and without cooling lubricant were compared and a deteriorating effect was determined.
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