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磷化加工是一种采用繁杂的化工和电化工反应从而产生磷化膜的形成。反应所生成的膜层叫磷化膜层。磷化的主要用途是给钢铁工件提供防锈保护,在一般情况下防止工件被生锈,还可以用于涂装前的处理,提高涂料层的吸附力和防锈能力,而且还能起到减少摩擦和自润滑的功能。它是一种人为产生的防止生锈的经过,当中干涉到了很多的化工和电化工的反应,比如分离,分解,结合沉渣等。所以要了解磷化**要清楚工件在磷化液里发生的反应。 不一样的磷化不同材料的磷化原理也大不相同。尽管我公司在此方面已经做了很多的实验和研发,但是到目前为止还没能**的搞明白。 Phosphating process is a complex chemical and electric chemical reaction to produce the formation of phosphating film. Membrane of the reaction layer called phosphating film. Phosphating of main purpose is to provide the steel workpiece antirust protection, in the general case to prevent the workpiece is rusty. 磷化反应**应该是工件被游离酸腐蚀,和氧化还原反应结合在一起。工件只要被放入加热的*里就会开始在工件表面形成一层膜。但是这种膜一般防锈能力比较薄弱,因此,一般情况下磷化是在带有反应盐的溶液里进行的。 Although my company in this regard have done a lot of experiments and research and development, but so far has not been able to thoroughly understand. Phosphating reaction, first of all, should be free acid corrosion is the workpiece, and REDOX reaction together. Heat up the artifacts be hydrochloric acid will start in workpiece surface form a layer of film. 从一些实验和研究中发现,磷化反应的时间是根据磷化液温度,浓度,和工件材质表面状态来定的,当磷化反应达到10-15分钟左右的时候,此时磷化反应基本停止了,换句话说磷化膜的生成基本平衡。 Through my company many years of practical experience shows that although said that no air bubbles on the surface reaction has been stopped, but this is only the surface phenomenon. In response to stop the gap after phosphating film still has a lot of not all reaction thoroughly. Must be in about ten minutes later, no gap of phosphating can truly stopped. 通过我公司多年的实践经验表明虽然说表面上看没有气泡产生反应已经停止了,但是这只是它的表面现象。其实在反应停止后磷化膜的空隙仍然有很多没有全部反应**。**要在大约十分钟以后才没有空隙,磷化才能算是真正的停止了。到达一个稳定的值。 对磷化化工学的更深入实验发现,公斤表面调整对磷化膜的形成和生长的原因有很大的促进作用,当碳钢件放入到磷化液里基材产生点解反应,表面活力增强,电位发生变化电位的提高只能在合适的温度一下才能看到,在合适的温度以上是很难看到的,这是因为在合适的温度条件下,磷化液是处在饱和的阶段的,这种情况下公斤一旦进去磷化液就会有磷化膜开始产生,并且能阻碍电子的通过,如果磷化液温度较低,则磷化反应速度慢,磷化时间长才能饱和 To reach a stable value. Further experiments of phosphate chemical industry study, found that kg surface adjustment for the reason of the formation and growth of phosphate film has a great role in promoting, the carbon steel. 当电子处于较高峰时,这个时候磷化膜正在很快的形成,随着时间的延长,表层电流的阻碍飞速上升,所以电位也就立刻下滑,接下来被侵蚀电子稍有上升或者下放速率放慢。这是因为在磷化膜形成的过程中产生很多磷化铁,增强钢铁的反应速度,从而加快磷化膜的形成。 When electrons are in a peak, the formation of the phosphating film was quickly at this time, with the extension of time, hinder the rapid rise of the surface current.