Aluminium alloy intended especially for manufacture of castings of mold segments for molding pneumatic tires and heat treatment process of mold segment castings

摘要

ufeffpu0159edmu011btnu00e1 aluminum alloy contains 85,55 when 89,00% by weight. al; 8.5 to 10% by weight. a; 0.6 to 1.2% by weight. cu; 0.6 to 1.0% by weight. ni; 0.4 to 0.8% by weight. mn, 0.03 to 0.05% by weight. sr; a maximum of 0.4% by weight. mg; maximum 0,6% by weight. fe; max 0,1% by weight. you; max 0,1% by weight. zn and max. 0,05% by weight. other ingredients individually, while the other additives total max is 0,15% by weight.the subject invention is method of heat treatment of castings segments forms of this alloy, which are those segments forms ohu0159u00e1ty on u017eu00edhacu00ed temperature 520 degrees and u017eu00edhu00e1ny for 0.5 to 8 h, then returned in the water at a temperature of 50 to 60 degrees celsius and then make out the by aging at a temperature of 170 degrees c for 6 to 8 hours.