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Process for the manufacture of fine grain-textured aluminium rolling mill products
Process for the manufacture of fine grain-textured aluminium rolling mill products
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机译:细纹铝轧机产品的制造方法
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摘要
A process for the preparation of a rolled aluminum product, containing iron as the predominant alloy element, which has a grain size of less than 10 mu m after annealing to at least 250 DEG C., in which an alloy consisting of 0.8 to 1.5% iron, up to 0.5% by weight of each of Si and Mn, the sum of Si and Mn being between 0.2 and 0.8%, up to 0.3% by weight of any other component, the total of other components being no more than 0.8% by weight, and the remainder being aluminum, is casted at a solidification rate of 2.5 to 25 cm/min, the hot plate is cooled to less than 120 DEG C. at a rate of less than 0.5 K/sec and is then cold rolled with a thickness decrease of at least 75% without intermediate annealing, and the final annealing temperature does not exceed 380 DEG C.
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