PROBLEM TO BE SOLVED: To provide a method for producing a half-melted billet of an Al alloy for transporting machines, in which the process is simple, the cost reduction of cost is achieved, and the uniform products is obtained.;SOLUTION: An Al alloy having a composition containing, by weight, ≤0.5% Cu, 5.0 to 10% Si, 0.2 to 0.7% Mg, ≤0.35% Zn, ≤0.55% Fe, ≤0.5% Mn and 0.005 to 0.5% Ti, and the balance substantially Al is produced, next, work strain is introduced by cold form forging at a strain ratio of 10 to 40% at a work introducing rate of ≤10 mm/sec. at ≤200°C, and after that, the alloy is held at 576 to 585°C.;COPYRIGHT: (C)2001,JPO
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机译：解决的问题：提供一种用于运输机器的铝合金的半熔铸坯的生产方法，该方法简单，成本降低，并且获得了均匀的产品。具有按重量计包含小于0.5％的Cu，5.0至10％的Si，0.2至0.7％的Mg，小于0.35％的Zn，小于0.55％的Fe，小于0.5％的Mn和0.005至0.5％的组成的铝合金Ti，并产生基本平衡的Al，然后，通过冷成形锻造以10至40％的应变率以10 mm / sec的应变率引入工作应变。于200°C加热，此后将合金保持在576至585°C.COPYRIGHT：（C）2001，JPO
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