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    • 29. 发明授权
    • Aluminum alloy shapes
    • 铝合金形状
    • US4039355A
    • 1977-08-02
    • US550223
    • 1975-02-18
    • Toshiro TakahashiToshihiro NaganoKenji WadaMasaru Kikuchi
    • Toshiro TakahashiToshihiro NaganoKenji WadaMasaru Kikuchi
    • C22F1/05C22C21/02C22C21/06C22C21/08C22F1/00
    • C22C21/08Y10T428/31935
    • An aluminum alloy consising essentially of 0.65 to 0.75% by weight of magnesium and 0.50 to 0.60% by weight of silicon or 0.47 to 0.57% by weight of magnesium and 0.75 to 0.85% by weight of silicon, 0.15% to 0.25% by weight of iron, less than 0.05% of an impurity selected from the group consisting of copper, manganese, zinc, chromium, and titanium and the balance aluminum, the aluminum alloy being subjected to aging treatment at a temperature below 200.degree. C for 20 to 50 minutes to obtain 0.2% proof stress larger than 11 kg/mm.sup.2, ultimate tensile strength larger than 20 kg/mm.sup.2 and elongation more than 8%. Aluminum alloy shapes are formed of the above aluminum alloy by extrusion forming of the aluminum alloy to obtain an extrusion, coating a film on the surface of the extrusion with a water-soluble paint after forming thereon a ground film, heating the extrusion at a temperature below 200.degree. C for 20 to 50 minutes to effect printing and hardening of the coated film and age hardening of the extrusion at the same time.
    • 一种铝合金基本上占0.65至0.75重量%的镁和0.50-0.60重量%的硅或0.47至0.57重量%的镁和0.75至0.85重量%的硅,0.15重量%至0.25重量%的硅, 铁,小于0.05%的选自铜,锰,锌,铬和钛的杂质,余量为铝,铝合金在200℃以下进行20-50分钟的时效处理 获得大于11kg / mm2的0.2%屈服应力,极限抗拉强度大于20kg / mm2,伸长率大于8%。 铝合金的形状由上述铝合金形成,通过铝合金的挤出成型得到挤出,在其上成型后用水溶性涂料在挤压成形表面上涂覆膜,在该温度下加热挤出 在200℃以下20〜50分钟,同时进行涂膜的印刷硬化和挤出的时效硬化。