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Xiao-Jun Jiang

Minxia Li

A method for producing an aluminium alloy extrusion, consisting of an alloy with the composition ≤0.30% by weight of silicon, ≤0.40% by weight of iron, 0.01-1.1% by weight of manganese, ≤0.30% by weight of magnesium, ≤0.70% by weight of zinc, ≤0.35% by weight of chromium, ≤0.20% by weight of zirconium, ≤0.25% by weight of titanium, ≤0.20% by weight vanadium, ≤0.10% by weight of copper, up to 0.15% by weight of other impurities, each not greater than 0.03% by weight and the balance aluminium, the method comprising the steps casting the molten metal into extrusion billet a) subjecting the billet to a homogenization treatment at a holding temperature of 550 to 620° C. for 6 to 10 hours b) heating the billet to a temperature of 400 to 550° C. c) extruding the billet to a tube.

Method for producing a corrosion and high temperature resistant aluminum alloy extrusion material

A method for producing a corrosion resistant aluminum alloy extrusion. The method includes providing molten alloy with a composition comprising ≤0.30, % by weight of silicon, ≤0.40, % by weight of iron, 0.01-0.6% manganese, ≤0.30, % magnesium, ≤0.70, % zinc, 0.05-0.35% chromium, 0.02-0.20% zirconium, ≤0.25% titanium, ≤0.20% vanadium, ≤0.10% copper, up to 0.15% by weight of other impurities, each not greater than 0.03% by weight, and the balance aluminum. The method includes casting the alloy into an extrusion billet, subjecting the billet to a homogenization treatment at a holding temperature of 550 to 620 deg.C for 6 to 10 hours, heating the billet to a temperature of 400 to 550 deg.C, and extruding the billet to a tube.

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