一、前言利用其它合金来代替铜合金以节省和减少铜的使用量,在我国国民经济建设中是一项具有十分重要意义的措施,最近我们试验了用锌合金来代替铜合金的工作。关于锌合金性能的研究开始得较早,各国都做了不少的工作,但是对于锌合金的尺寸稳定性问题迄今仍未得到很好的解决,特别是对于锌合金在低温状态 I. Preface The use of other alloys instead of copper alloys to save and reduce the amount of copper used is a very significant measure in the national economy of our country. Recently, we have experimented with the replacement of copper alloys with zinc alloys. Research on the properties of zinc alloy started earlier, many countries have done a lot of work, but for the dimensional stability of zinc alloy has so far not been well resolved, especially for the zinc alloy at low temperature