从前用合金块和锭作为铝合金的晶粒细化剂和吸收进入熔体中非金属物消除剂。这个方法耗费时间和成本昂贵。它们是在铸造之前预先加入静置炉中的。近几年来,美国纽约州Kawecki Berylco工业有限公司试制和发展了一种比使用金属块更省钱和有效的新方法。他们将晶种合金挤压成线材形状,从而使铝合金铸造中连续“散播晶种”成为可能和实现了自动化。 In the past, alloy ingots and ingots were used as grain refiner for aluminum alloy and absorbed into the melt as nonmetal remover. This method is time-consuming and costly. They are pre-cast into a standing furnace before casting. In recent years, Kawecki Berylco Industries, Inc., of New York, USA, has experimented with and developed a new method that is more economical and effective than using metal blocks. They squeeze the seed alloy into wire shapes, making it possible and automated to “spread the seed” continuously in aluminum alloy foundry.