according to experimental results, the macrostructure of aluminium ingot was modified from large grains with columnar crystals to finer grains with equiaxed crystals using the method.
结果表明,该方法可以细化纯铝的凝固组织,使粗大的柱状晶变为细小的等轴晶;
by studying the relationship between bubble formed on the aluminium ingot surface and production condition, a basic analysis to bubble is given in terms of its nature, reasons and rules.