Preparation of High-Quality 6xxx Aluminium Eco Alloys Cast in Billets

Abstract

The present research work shows that secondary aluminium alloys, properly sorted and prepared for the casting process, can provide almost 100% of the input for the casting process of 6xxx alloys billets. The 6063 and 6082 alloys were prepared in three variants of chemical composition. Liquid metal analysis showed low levels of impurities in most of the alloys studied. In the hot-top cast billets, differences were observed in the phase fraction and average grain size between the edge and centre of the billet, which was related to a slight increase in the content of elements such as Fe and Mn.

Keywords

• scraps
• recycling
• 6xxx series alloys