pH值和電導率是電泳涂漆的兩項重要工藝參數，對鋁型材電泳涂漆有重要的影響。在日常的生產中，主要是參照這兩個參數的檢測結果來對電泳槽進行維護。
目前，鋁型材行(xing)業使用的白色電(dian)泳(yong)漆主要是丙烯酸樹(shu)(shu)脂，該(gai)樹(shu)(shu)脂在酸性環(huan)境中不(bu)溶于水，有(you)自動凝聚(ju)沉積(ji)的傾向，

所以當pH值過低，電泳樹脂的(de)水溶(rong)性(xing)、穩定性(xing)和電沉積性(xing)能變差，電泳液(ye)變得渾濁，從而使得漆(qi)膜粗(cu)糙，甚(shen)至電泳無法(fa)進行。

當pH值過高時(shi)，水的電(dian)解(jie)反應加劇(ju)，氣泡增多，易產生針孔；

另外pH值過高會使得電(dian)泳漆(qi)膜的(de)溶解加劇，析出(chu)的(de)漆(qi)膜變薄，甚至(zhi)無附著(zhu)性。

電(dian)(dian)(dian)(dian)泳(yong)(yong)(yong)槽液的電(dian)(dian)(dian)(dian)導率(lv)過大，就會(hui)(hui)(hui)使電(dian)(dian)(dian)(dian)泳(yong)(yong)(yong)漆的沉積速度(du)過快，泳(yong)(yong)(yong)透(tou)力降低，會(hui)(hui)(hui)引起涂層表面粗糙，產(chan)生(sheng)針孔。  在生(sheng)產(chan)中，隨著電(dian)(dian)(dian)(dian)泳(yong)(yong)(yong)過程的進行(xing)(xing)，電(dian)(dian)(dian)(dian)泳(yong)(yong)(yong)槽液會(hui)(hui)(hui)不斷(duan)的產(chan)生(sheng)銨離子(zi)，使得槽液的pH值和電(dian)(dian)(dian)(dian)導率(lv)都會(hui)(hui)(hui)升(sheng)高(gao)。另(ling)外，從前道工序帶來(lai)的雜質離子(zi)也會(hui)(hui)(hui)使得電(dian)(dian)(dian)(dian)泳(yong)(yong)(yong)槽液的電(dian)(dian)(dian)(dian)導率(lv)升(sheng)高(gao)，當pH值和電(dian)(dian)(dian)(dian)導率(lv)升(sheng)高(gao)到偏離工藝范(fan)圍時，我們可以通過對電(dian)(dian)(dian)(dian)泳(yong)(yong)(yong)槽液進行(xing)(xing)精(jing)制(zhi)來(lai)解決。