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自从大力开展向苏联学习以来,我国很多机械工厂都广泛地采用了磷化处理法防止钢铁表面的腐蚀。关於磷化的原理和一般操作步骤,最近在国内的杂志和专书上都已有较详细的介绍,我们不准备重复,只准备谈一下目前磷化处理中存在的一个主要问题——磷化膜太厚,以及与此直接有关的药剂消耗量太大的问题。我们知道,磷化处理防锈的一个很大的好处,是它不会显著地改变精密钢件的尺寸,而这对机件的装配是很重要的。但是今天我国很多厂矿生产的零件经过处理后,在尺寸方面常超过规格而变成废品,这在目前是一个亟待解决的问题。当然,如果我们采用磷酸二氢锌来代替磷酸二氢锰铁的话,厚度问题是可以解决的;但是这样一般得到的膜质量较差,并且必须改变苏联操作规程,在目前这是不太实际的。因此我们只讨论在
Since vigorously carrying out the study in the Soviet Union, many machinery factories in our country have adopted the phosphating method to prevent the corrosion of the steel surface. Phosphating on the principle and the general steps, recently in the domestic magazines and books have been described in more detail, we are not prepared to repeat, only ready to talk about the current phosphating treatment of a major problem - phosphating The film is too thick, and the problems with too much medicament consumption directly related to it. We know that one of the great benefits of phosphating rust prevention is that it does not significantly change the size of the precision steel, which is important for the assembly of the machine. However, today, many factories in our country produce parts that have been processed, often exceed the size of the size and become waste, which is currently an urgent problem to be solved. Of course, the problem of thickness can be solved if we use zinc dihydrogen phosphate instead of ferric dihydrogenphosphate; but the quality of the film thus obtained is generally poor and the Soviet operation must be changed, which is not practical at this time . So we only talk about it