Use of cast aluminum alloys comprising mixed scrap and wrought aluminum alloys for the production of rolled semifinished

摘要

1. The use of mixed aluminum scrap for aluminum casting alloys selected from the group consisting of AlSi, AlSiCu and/or AlSiMg and for wrought aluminum alloys selected from the group consisting of AlMn, AlMg, AlMgMn, AlZnMg, AlZnMgCu, AlMgSi and/or AlCuMg, said casting alloys having a weight ratio to said wrought alloys of from 1:1 to 2:1, and without addition of primary aluminum for the making of rolled aluminum intermediate products, comprising from 1 to 6% Si, 1 to 3% Mg, 0.5 to 3% Zn, 0.5 to 3% Fe, 0.3 to 2% Cu as well as up to 1% Mn, up to 0.2% Ti, up to 0.5% Cr and up to 0.5% Pb, Bi, Sn, the remainder aluminum.