電鍍硬鉻(ge)時如(ru)何去除鐵雜(za)質呢？

前面(mian)我們介紹過(guo)鐵雜(za)質對于(yu)鍍(du)鉻液的(de)(de)污染以及(ji)會出現的(de)(de)狀況，那么對于(yu)我們操作人員在平時的(de)(de)電鍍(du)過(guo)程中應該(gai)樣去除這些鐵雜(za)志(zhi)呢？現在就(jiu)幫(bang)大家(jia)整理了(le)三種方法(fa)。

那么(me)如果鍍液(ye)已被鐵離(li)子造成污染，可(ke)以做以下的處理：

1、稀釋法(fa)，根據Fe3+的含量(liang)，蚌埠鍍銀(yin)，使其(qi)沖稀后的Fe3+的濃度降到5g／L以下，然后根據化驗(yan)結果(guo)補充鉻酐和硫酸(suan)。

2、離子(zi)交換法，目前比較常用的(de)是強酸性(xing)陽離子(zi)交換樹(shu)(shu)脂，由于鉻酸含量較高，在進(jin)入樹(shu)(shu)脂之前需要稀(xi)釋到80g／L以下方(fang)可(ke)進(jin)行(xing)，以免破壞榭脂。

3、隔離電解法，將溶液注入陰極室電解處理，將Cr6+還原成Cr3+，作用就是使溶液的pH值升高，金銀銅電鍍批發，使鐵等金屬離子生成氫氧化物沉淀，過濾和去除，含有Cr3+的溶液通過電滲析進入陽極室進行電解，使Cr3+氧化成Cr6+，pH值降低，這種方法，鍍銀價格，處理。

金屬表面處理包括

金(jin)(jin)屬材(cai)料表(biao)面(mian)處(chu)理(li)(li)技術與金(jin)(jin)屬熱處(chu)理(li)(li)和(he)(he)表(biao)面(mian)熱處(chu)理(li)(li)不是一個類型的慨念。一般把金(jin)(jin)屬表(biao)面(mian)防護(hu)和(he)(he)改性稱(cheng)之為(wei)金(jin)(jin)屬材(cai)料表(biao)面(mian)處(chu)理(li)(li)，改變金(jin)(jin)屬材(cai)料表(biao)面(mian)組織(zhi)結構(gou)和(he)(he)力學性能指標稱(cheng)為(wei)金(jin)(jin)屬表(biao)面(mian)熱處(chu)理(li)(li)。

表(biao)面(mian)(mian)(mian)防(fang)護的(de)內(nei)容：電鍍、涂裝、化學(xue)處(chu)(chu)理層；電鍍包(bao)括(kuo)(kuo)（鍍鋅、銅、鉻、鉛(qian)、銀、鎳、錫(xi)、鎘等）；涂裝包(bao)括(kuo)(kuo)（油漆涂裝、靜(jing)電噴粉(fen)、噴塑工藝）；化學(xue)處(chu)(chu)理包(bao)括(kuo)(kuo)（發(fa)黑處(chu)(chu)理、磷(lin)化處(chu)(chu)理）。另一方面(mian)(mian)(mian)是金屬的(de)表(biao)面(mian)(mian)(mian)改(gai)(gai)性(xing)(xing)(xing)(xing)，也稱(cheng)(cheng)表(biao)面(mian)(mian)(mian)優(you)化，就是借助離(li)(li)子(zi)束、激光、等離(li)(li)子(zi)體等新(xin)技(ji)術手段(duan)，改(gai)(gai)變(bian)材料表(biao)面(mian)(mian)(mian)及(ji)近表(biao)面(mian)(mian)(mian)的(de)組分、結構與性(xing)(xing)(xing)(xing)質，從而獲(huo)得用傳統的(de)冶金和表(biao)面(mian)(mian)(mian)處(chu)(chu)理技(ji)術無法得到(dao)的(de)新(xin)薄(bo)層材料，或者使傳統材料具有更(geng)好的(de)性(xing)(xing)(xing)(xing)能。現代(dai)的(de)表(biao)面(mian)(mian)(mian)改(gai)(gai)性(xing)(xing)(xing)(xing)技(ji)術主(zhu)要有物理氣(qi)相沉(chen)(chen)積（簡(jian)稱(cheng)(cheng)PVD）、化學(xue)氣(qi)相沉(chen)(chen)積（簡(jian)稱(cheng)(cheng)CVD）、等離(li)(li)子(zi)體化學(xue)氣(qi)相沉(chen)(chen)積（簡(jian)稱(cheng)(cheng)PCVD）、離(li)(li)子(zi)注入和離(li)(li)子(zi)束沉(chen)(chen)積。

至(zhi)于(yu)工(gong)藝(yi)(yi)步驟的確是太多了，電鍍有掛(gua)鍍和滾鍍、油(you)漆(qi)涂(tu)層分類更(geng)多，鍍銀多少錢(qian)，有刷涂(tu)、浸漆(qi)、烤(kao)漆(qi)、電泳、靜電噴涂(tu)等，不同的要求，工(gong)藝(yi)(yi)方法區(qu)別(bie)也大

電(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)是(shi)(shi)一(yi)(yi)種(zhong)常見(jian)的(de)(de)(de)(de)(de)(de)(de)表面(mian)(mian)處理技術，可以在金屬(shu)(shu)(shu)表面(mian)(mian)形成(cheng)一(yi)(yi)層(ceng)(ceng)(ceng)(ceng)均(jun)(jun)勻、致(zhi)密、光滑的(de)(de)(de)(de)(de)(de)(de)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)層(ceng)(ceng)(ceng)(ceng)，從而提高(gao)金屬(shu)(shu)(shu)的(de)(de)(de)(de)(de)(de)(de)耐(nai)(nai)磨(mo)性(xing)(xing)(xing)、耐(nai)(nai)腐蝕(shi)(shi)性(xing)(xing)(xing)、導電(dian)(dian)(dian)(dian)性(xing)(xing)(xing)等性(xing)(xing)(xing)能。電(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)方(fang)(fang)式(shi)(shi)(shi)主要(yao)(yao)有(you)以下(xia)幾種(zhong)：化(hua)(hua)學(xue)(xue)(xue)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)：化(hua)(hua)學(xue)(xue)(xue)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)是(shi)(shi)一(yi)(yi)種(zhong)無(wu)需(xu)(xu)電(dian)(dian)(dian)(dian)源的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)方(fang)(fang)式(shi)(shi)(shi)，通(tong)過化(hua)(hua)學(xue)(xue)(xue)反應在金屬(shu)(shu)(shu)表面(mian)(mian)沉(chen)積(ji)一(yi)(yi)層(ceng)(ceng)(ceng)(ceng)化(hua)(hua)學(xue)(xue)(xue)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)層(ceng)(ceng)(ceng)(ceng)。化(hua)(hua)學(xue)(xue)(xue)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)的(de)(de)(de)(de)(de)(de)(de)優(you)點(dian)是(shi)(shi)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)層(ceng)(ceng)(ceng)(ceng)均(jun)(jun)勻、致(zhi)密、無(wu)孔隙，但(dan)是(shi)(shi)需(xu)(xu)要(yao)(yao)使用有(you)毒(du)的(de)(de)(de)(de)(de)(de)(de)化(hua)(hua)學(xue)(xue)(xue)試(shi)劑，且鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)層(ceng)(ceng)(ceng)(ceng)的(de)(de)(de)(de)(de)(de)(de)耐(nai)(nai)磨(mo)性(xing)(xing)(xing)和耐(nai)(nai)腐蝕(shi)(shi)性(xing)(xing)(xing)較(jiao)(jiao)差(cha)。電(dian)(dian)(dian)(dian)化(hua)(hua)學(xue)(xue)(xue)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)：電(dian)(dian)(dian)(dian)化(hua)(hua)學(xue)(xue)(xue)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)是(shi)(shi)一(yi)(yi)種(zhong)結合(he)化(hua)(hua)學(xue)(xue)(xue)反應和電(dian)(dian)(dian)(dian)流(liu)的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)方(fang)(fang)式(shi)(shi)(shi)，通(tong)過電(dian)(dian)(dian)(dian)解(jie)(jie)溶(rong)液(ye)中(zhong)的(de)(de)(de)(de)(de)(de)(de)金屬(shu)(shu)(shu)離(li)子(zi)(zi)(zi)在金屬(shu)(shu)(shu)表面(mian)(mian)沉(chen)積(ji)一(yi)(yi)層(ceng)(ceng)(ceng)(ceng)電(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)層(ceng)(ceng)(ceng)(ceng)。電(dian)(dian)(dian)(dian)化(hua)(hua)學(xue)(xue)(xue)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)的(de)(de)(de)(de)(de)(de)(de)優(you)點(dian)是(shi)(shi)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)層(ceng)(ceng)(ceng)(ceng)均(jun)(jun)勻、致(zhi)密、無(wu)孔隙，且鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)層(ceng)(ceng)(ceng)(ceng)的(de)(de)(de)(de)(de)(de)(de)耐(nai)(nai)磨(mo)性(xing)(xing)(xing)和耐(nai)(nai)腐蝕(shi)(shi)性(xing)(xing)(xing)較(jiao)(jiao)好(hao)，但(dan)是(shi)(shi)需(xu)(xu)要(yao)(yao)使用有(you)毒(du)的(de)(de)(de)(de)(de)(de)(de)化(hua)(hua)學(xue)(xue)(xue)試(shi)劑和電(dian)(dian)(dian)(dian)解(jie)(jie)液(ye)。鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)鉻：鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)鉻是(shi)(shi)一(yi)(yi)種(zhong)常見(jian)的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)方(fang)(fang)式(shi)(shi)(shi)，鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)銀加工廠(chang)，通(tong)過電(dian)(dian)(dian)(dian)解(jie)(jie)溶(rong)液(ye)中(zhong)的(de)(de)(de)(de)(de)(de)(de)鉻離(li)子(zi)(zi)(zi)在金屬(shu)(shu)(shu)表面(mian)(mian)沉(chen)積(ji)一(yi)(yi)層(ceng)(ceng)(ceng)(ceng)鉻鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)層(ceng)(ceng)(ceng)(ceng)。鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)鉻的(de)(de)(de)(de)(de)(de)(de)優(you)點(dian)是(shi)(shi)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)層(ceng)(ceng)(ceng)(ceng)硬度(du)高(gao)、耐(nai)(nai)磨(mo)性(xing)(xing)(xing)好(hao)、耐(nai)(nai)腐蝕(shi)(shi)性(xing)(xing)(xing)好(hao)，但(dan)是(shi)(shi)需(xu)(xu)要(yao)(yao)使用有(you)毒(du)的(de)(de)(de)(de)(de)(de)(de)化(hua)(hua)學(xue)(xue)(xue)試(shi)劑和電(dian)(dian)(dian)(dian)解(jie)(jie)液(ye)。鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)鎳(nie)：鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)鎳(nie)是(shi)(shi)一(yi)(yi)種(zhong)常見(jian)的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)方(fang)(fang)式(shi)(shi)(shi)，通(tong)過電(dian)(dian)(dian)(dian)解(jie)(jie)溶(rong)液(ye)中(zhong)的(de)(de)(de)(de)(de)(de)(de)鎳(nie)離(li)子(zi)(zi)(zi)在金屬(shu)(shu)(shu)表面(mian)(mian)沉(chen)積(ji)一(yi)(yi)層(ceng)(ceng)(ceng)(ceng)鎳(nie)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)層(ceng)(ceng)(ceng)(ceng)。鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)鎳(nie)的(de)(de)(de)(de)(de)(de)(de)優(you)點(dian)是(shi)(shi)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)層(ceng)(ceng)(ceng)(ceng)硬度(du)高(gao)、耐(nai)(nai)磨(mo)性(xing)(xing)(xing)好(hao)、耐(nai)(nai)腐蝕(shi)(shi)性(xing)(xing)(xing)好(hao)，但(dan)是(shi)(shi)需(xu)(xu)要(yao)(yao)使用有(you)毒(du)的(de)(de)(de)(de)(de)(de)(de)化(hua)(hua)學(xue)(xue)(xue)試(shi)劑和電(dian)(dian)(dian)(dian)解(jie)(jie)液(ye)。總之，電(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)方(fang)(fang)式(shi)(shi)(shi)主要(yao)(yao)有(you)化(hua)(hua)學(xue)(xue)(xue)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)、電(dian)(dian)(dian)(dian)化(hua)(hua)學(xue)(xue)(xue)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)、鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)鉻和鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)鎳(nie)等幾種(zhong)，每種(zhong)電(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)方(fang)(fang)式(shi)(shi)(shi)都有(you)其(qi)優(you)點(dian)和缺點(dian)，需(xu)(xu)要(yao)(yao)根據(ju)實際(ji)應用需(xu)(xu)求(qiu)選擇合(he)適的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)方(fang)(fang)式(shi)(shi)(shi)。