磷化加工是一種采用繁雜的化工和電化工反應(yīng)從而產(chǎn)生磷化膜的形成。反應(yīng)所生成的膜層叫磷化膜層。磷化的主要用途是給鋼鐵工件提供防銹保護(hù),在一般情況下防止工件被生銹,還可以用于涂裝前的處理,提高涂料層的吸附力和防銹能力,而且還能起到減少摩擦和自潤滑的功能。它是一種人為產(chǎn)生的防止生銹的經(jīng)過,當(dāng)中干涉到了很多的化工和電化工的反應(yīng),比如分離,分解,結(jié)合沉渣等。所以要了解磷化首先要清楚工件在磷化液里發(fā)生的反應(yīng)。
不一樣的磷化不同材料的磷化原理也大不相同。盡管我公司在此方面已經(jīng)做了很多的實(shí)驗(yàn)和研發(fā),但是到目前為止還沒能徹底的搞明白。
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.
磷化反應(yīng)首先應(yīng)該是工件被游離酸腐蝕,和氧化還原反應(yīng)結(jié)合在一起。工件只要被放入加熱的鹽酸里就會開始在工件表面形成一層膜。但是這種膜一般防銹能力比較薄弱,因此,一般情況下磷化是在帶有反應(yīng)鹽的溶液里進(jìn)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.
從一些實(shí)驗(yàn)和研究中發(fā)現(xiàn),磷化反應(yīng)的時間是根據(jù)磷化液溫度,濃度,和工件材質(zhì)表面狀態(tài)來定的,當(dāng)磷化反應(yīng)達(dá)到10-15分鐘左右的時候,此時磷化反應(yīng)基本停止了,換句話說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 |
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