提高铸件质量──除气技术三大系列之一派罗特克公司安娜·亨利为提高金属质量，人们广泛接受了一种除气的方法。本文介绍的是除气技术三大系列中的第一种。具体操作是将惰性气体注入铝水以除去氢气。此法具有降低碱性化合物和其它杂质，有效提高铸件质量、增加效益之功效... Improve the quality of castings ─ ─ out of gas technology, one of the three major series sent Luo Teke company Anna · Henry to improve the quality of the metal, people widely accepted a method of degassing. This article describes the first of the three major series of degassing technologies. The specific operation is to inject inert gas into aluminum water to remove hydrogen. This method has the effect of reducing alkaline compounds and other impurities, effectively improving casting quality and increasing efficiency.