The use of an aluminum - alloy for the production of gas cylinders

摘要

The invention relates to an alloy of the series 7000 and a specific heat treatment for the manufacture of hollow body under pressure, and in particular, of bottles made of metal for gas br / the alloy contains by weight%: & br / (see appended drawing in bopi) & br / & & br / the final annealing is preferably carried out in 3 steps: & br / - 1ère step: between 105 and 120degré c. for 6 to 12h br / - 2ème step: between 170 and 190degré c. for 0,5 to 20h br / - 3ème step: between 105 and 120degré c. for 12 to 36h.