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鍍(du)鋅(xin)鋼管分(fen)熱(re)鍍(du)鋅(xin)和電(dian)鍍(du)鋅(xin)兩種，熱(re)鍍(du)鋅(xin)鍍(du)鋅(xin)層(ceng)厚，具(ju)有鍍(du)層(ceng)均(jun)勻，附(fu)著(zhu)力強，使(shi)用壽命長等優(you)點。電(dian)鍍(du)鋅(xin)成本低，表面不(bu)是很光滑，其本身(shen)的耐腐蝕(shi)性比熱(re)鍍(du)鋅(xin)管相差很多。

鍍鋅管工藝特點

1.對硫(liu)酸鹽鍍鋅(xin)的優(you)化

　　硫(liu)酸(suan)鹽(yan)(yan)鍍(du)(du)(du)(du)(du)(du)(du)鋅(xin)最大優點(dian)是電(dian)流(liu)效率高(gao)(gao)達(da)100% ，沉(chen)積速(su)率快，這(zhe)是其他鍍(du)(du)(du)(du)(du)(du)(du)鋅(xin)工(gong)藝(yi)(yi)無(wu)可比擬的(de)。由(you)于(yu)鍍(du)(du)(du)(du)(du)(du)(du)層結晶不夠(gou)細致(zhi)，分散能(neng)力(li)(li)與(yu)(yu)深鍍(du)(du)(du)(du)(du)(du)(du)能(neng)力(li)(li)較差，因而(er)只適于(yu)幾何形狀簡單的(de)管材與(yu)(yu)線材等(deng)電(dian)鍍(du)(du)(du)(du)(du)(du)(du)。硫(liu)酸(suan)鹽(yan)(yan)電(dian)鍍(du)(du)(du)(du)(du)(du)(du)鋅(xin)鐵合(he)金(jin)工(gong)藝(yi)(yi)對傳統的(de)硫(liu)酸(suan)鹽(yan)(yan)鍍(du)(du)(du)(du)(du)(du)(du)鋅(xin)工(gong)藝(yi)(yi)進(jin)行優化(hua)，只保留了(le)主鹽(yan)(yan)硫(liu)酸(suan)鋅(xin)，其余組(zu)(zu)分均(jun)舍(she)棄。在(zai)組(zu)(zu)成(cheng)新工(gong)藝(yi)(yi)配方中又加(jia)入(ru)適量鐵鹽(yan)(yan)，使原來的(de)單金(jin)屬鍍(du)(du)(du)(du)(du)(du)(du)層形成(cheng)鋅(xin)鐵合(he)金(jin)鍍(du)(du)(du)(du)(du)(du)(du)層。工(gong)藝(yi)(yi)的(de)重組(zu)(zu)，不僅發(fa)揚了(le)原工(gong)藝(yi)(yi)電(dian)流(liu)效率高(gao)(gao)、沉(chen)積速(su)率快的(de)優點(dian)，還使分散能(neng)力(li)(li)與(yu)(yu)深鍍(du)(du)(du)(du)(du)(du)(du)能(neng)力(li)(li)得到很大改善，過去復(fu)雜件不能(neng)鍍(du)(du)(du)(du)(du)(du)(du)，現在(zai)簡單與(yu)(yu)復(fu)雜件都(dou)能(neng)鍍(du)(du)(du)(du)(du)(du)(du)，而(er)且防(fang)護性能(neng)比單金(jin)屬提高(gao)(gao)3～5倍。生產實(shi)踐(jian)證明(ming)，用于(yu)線材、管材的(de)連(lian)續電(dian)鍍(du)(du)(du)(du)(du)(du)(du)，鍍(du)(du)(du)(du)(du)(du)(du)層晶粒比原來的(de)更(geng)(geng)細化(hua)、更(geng)(geng)光(guang)亮，沉(chen)積速(su)率快。2～3 min內(nei)鍍(du)(du)(du)(du)(du)(du)(du)層厚(hou)度達(da)到要求。

2.硫酸鹽鍍鋅的轉化

　　硫(liu)(liu)酸(suan)(suan)(suan)(suan)鹽電(dian)鍍(du)(du)鋅鐵合(he)金只(zhi)保留硫(liu)(liu)酸(suan)(suan)(suan)(suan)鹽鍍(du)(du)鋅的主鹽硫(liu)(liu)酸(suan)(suan)(suan)(suan)鋅，其(qi)余(yu)組分(fen)如硫(liu)(liu)酸(suan)(suan)(suan)(suan)鋁、明礬(硫(liu)(liu)酸(suan)(suan)(suan)(suan)鋁鉀)等可(ke)在鍍(du)(du)液(ye)(ye)處理時，加入氫(qing)氧化鈉使之生成(cheng)(cheng)(cheng)不(bu)溶(rong)性(xing)氫(qing)氧化物(wu)沉淀去除；對有機添加劑，則加入粉狀活性(xing)炭吸咐去除。試驗表(biao)明，硫(liu)(liu)酸(suan)(suan)(suan)(suan)鋁與硫(liu)(liu)酸(suan)(suan)(suan)(suan)鋁鉀一(yi)次性(xing)難(nan)以徹底去除，對鍍(du)(du)層光(guang)亮度有影響，但并不(bu)嚴重(zhong)，可(ke)隨帶出消耗，此時鍍(du)(du)層光(guang)亮度便可(ke)恢復 溶(rong)液(ye)(ye)通過處理，可(ke)按新工藝(yi)所需成(cheng)(cheng)(cheng)分(fen)含量補加，即完成(cheng)(cheng)(cheng)轉(zhuan)化。

3.沉(chen)積速(su)率快、防護性能優異

　　硫酸(suan)鹽(yan)電(dian)鍍(du)鋅(xin)鐵合金工藝電(dian)流效率高達(da)100% ，沉積速(su)率快是(shi)任何鍍(du)鋅(xin)工藝無(wu)(wu)可比擬的(de)，精細管的(de)運(yun)行速(su)度8～12 m/min，鍍(du)層(ceng)(ceng)厚度平均2m/min，這是(shi)連續鍍(du)鋅(xin)難于達(da)到的(de)。鍍(du)層(ceng)(ceng)光亮細致悅目。按國家標(biao)準(zhun)GB/T10125“人造氣氛試(shi)驗(yan)-鹽(yan)霧試(shi)驗(yan)”方法測試(shi)，72 h，鍍(du)層(ceng)(ceng)完(wan)好、無(wu)(wu)變(bian)化；96 h，鍍(du)層(ceng)(ceng)表面出現少(shao)量白銹。

4.獨特(te)的清潔(jie)生產

　　鍍(du)鋅(xin)管采(cai)用(yong)(yong)硫酸鹽電(dian)鍍(du)鋅(xin)鐵合金工(gong)藝，在于生(sheng)產(chan)(chan)線槽與槽間均穿孔(kong)直通而(er)溶液無(wu)任何帶出(chu)或(huo)溢流。生(sheng)產(chan)(chan)過程(cheng)各工(gong)序(xu)由(you)循(xun)環(huan)系統組(zu)成，各槽溶液即酸堿液、電(dian)鍍(du)液、出(chu)光(guang)與鈍化液等(deng)，只循(xun)環(huan)回用(yong)(yong)不(bu)(bu)向系統外滲漏或(huo)排放，生(sheng)產(chan)(chan)線只設5個清洗槽，采(cai)用(yong)(yong)循(xun)環(huan)回用(yong)(yong)定期排放，特別(bie)是鈍化后不(bu)(bu)清洗的無(wu)廢(fei)水產(chan)(chan)生(sheng)的生(sheng)產(chan)(chan)工(gong)藝。

5.電鍍(du)設備的(de)特殊性

　　鍍(du)(du)(du)(du)(du)(du)(du)(du)鋅(xin)(xin)管的(de)(de)(de)電(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)同(tong)(tong)線材(cai)電(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)一(yi)(yi)樣，都屬于連續電(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)，但施鍍(du)(du)(du)(du)(du)(du)(du)(du)的(de)(de)(de)設(she)備不同(tong)(tong)。鐵(tie)絲以其(qi)(qi)細長的(de)(de)(de)條形(xing)特色而設(she)計的(de)(de)(de)鍍(du)(du)(du)(du)(du)(du)(du)(du)槽(cao)(cao)，槽(cao)(cao)體(ti)(ti)長而寬(kuan)卻淺。電(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)時(shi)鐵(tie)絲從孔(kong)眼穿(chuan)出(chu)，呈(cheng)一(yi)(yi)字形(xing)在液(ye)面展開，保持相互(hu)間距(ju)。而鍍(du)(du)(du)(du)(du)(du)(du)(du)鋅(xin)(xin)管卻又(you)不同(tong)(tong)于鐵(tie)絲，有其(qi)(qi)獨(du)特之處(chu)(chu)，槽(cao)(cao)設(she)備較(jiao)為(wei)復雜。槽(cao)(cao)體(ti)(ti)由上(shang)、下(xia)(xia)(xia)兩部(bu)(bu)分組成(cheng)，上(shang)部(bu)(bu)為(wei)鍍(du)(du)(du)(du)(du)(du)(du)(du)槽(cao)(cao)，下(xia)(xia)(xia)部(bu)(bu)為(wei)溶液(ye)循環儲存槽(cao)(cao)，形(xing)成(cheng)一(yi)(yi)個上(shang)窄下(xia)(xia)(xia)寬(kuan)狀、似梯形(xing)的(de)(de)(de)槽(cao)(cao)體(ti)(ti)，在鍍(du)(du)(du)(du)(du)(du)(du)(du)槽(cao)(cao)中(zhong)設(she)有鍍(du)(du)(du)(du)(du)(du)(du)(du)鋅(xin)(xin)管電(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)運(yun)行的(de)(de)(de)通(tong)(tong)道，槽(cao)(cao)底有兩個通(tong)(tong)孔(kong)與下(xia)(xia)(xia)部(bu)(bu)的(de)(de)(de)儲存槽(cao)(cao)相通(tong)(tong)，并與液(ye)下(xia)(xia)(xia)泵形(xing)成(cheng)鍍(du)(du)(du)(du)(du)(du)(du)(du)液(ye)循環復用系統。因此，鍍(du)(du)(du)(du)(du)(du)(du)(du)鋅(xin)(xin)管同(tong)(tong)鐵(tie)絲電(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)一(yi)(yi)樣，鍍(du)(du)(du)(du)(du)(du)(du)(du)件都是動(dong)態性的(de)(de)(de)，而與鐵(tie)絲電(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)不同(tong)(tong)之處(chu)(chu)，電(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)鍍(du)(du)(du)(du)(du)(du)(du)(du)鋅(xin)(xin)管的(de)(de)(de)鍍(du)(du)(du)(du)(du)(du)(du)(du)液(ye)也是動(dong)態性的(de)(de)(de)。