鍍鋅是一(yi)(yi)種(zhong)經常采用(yong)的(de)(de)經濟而(er)有(you)效(xiao)的(de)(de)防(fang)(fang)腐方法。鋅產(chan)(chan)量的(de)(de)一(yi)(yi)半左右均用(yong)于(yu)(yu)此(ci)種(zhong)工藝。鍍鋅卷(juan)是為(wei)防(fang)(fang)止(zhi)鋼板表面遭(zao)受腐蝕延長(chang)其使用(yong)壽命(ming)，在(zai)鋼板表面涂(tu)以一(yi)(yi)層(ceng)金屬(shu)鋅，這種(zhong)涂(tu)鋅的(de)(de)鋼板稱為(wei)鍍鋅卷(juan)。鍍鋅卷(juan)主要用(yong)于(yu)(yu)建筑、家(jia)電、汽車(che)、容器、交通及家(jia)業等領域。特別是鋼結構(gou)建筑、汽車(che)制造(zao)、鋼板倉制造(zao)等行業。耐腐蝕強、表面質量好(hao)、得利于(yu)(yu)深加工、經濟實(shi)用(yong)等。有(you)關產(chan)(chan)品標(biao)準都列(lie)明鍍鋅卷(juan)推薦(jian)的(de)(de)標(biao)準厚(hou)度(du)(du)、長(chang)度(du)(du)和寬度(du)(du)及其允(yun)許偏差(cha)。鍍鋅卷(juan)厚(hou)度(du)(du)偏差(cha)一(yi)(yi)般在(zai)0.05mm，長(chang)寬偏差(cha)一(yi)(yi)般在(zai)5mm ，板材的(de)(de)厚(hou)度(du)(du)一(yi)(yi)般在(zai)0.2-3.2之(zhi)間 。

近期鋼價延續低(di)迷，隨著通(tong)國規模(mo)的(de)酷暑(shu)和旱(han)季到(dao)來，熱(re)鍍鋅(xin)卷(juan)板價格(ge)商場(chang)(chang)逐漸進入需要旺季，海內鋼鐵商場(chang)(chang)或(huo)(huo)將窄幅調(diao)整。在決(jue)策(ce)層兩手抓(zhua)制度(du)(du)措施落實(shi)狀況、貨(huo)銀本位度(du)(du)定向寬(kuan)松力度(du)(du)加大的(de)直觀層面利好牽動(dong)下，商場(chang)(chang)信念逐漸趨穩，短期海內鋼價無(wu)望止跌(die)企穩;另一上(shang)(shang)面，以后鋼價殺跌(die)電能(neng)有余，而上(shang)(shang)漲也仍然屏障重重。熱(re)鍍鋅(xin)卷(juan)板價格(ge)價錢或(huo)(huo)將長(chang)期在于低(di)位運行場(chang)(chang)面。

由于(yu)我國鋅資(zi)源比較(jiao)豐富，鍍鋅又(you)是(shi)(shi)一種價廉、能防銹，又(you)能裝(zhuang)飾的高(gao)性價比鍍種，因而在汽車、機械、電子、船舶、儀表、輕工等(deng)工業部門(men)得到(dao)廣泛的應用。如機械零件、低壓(ya)電器、高(gao)壓(ya)開(kai)關、緊(jin)固連接件、鋼鐵結構(gou)(gou)件、建(jian)(jian)筑五(wu)金、農業機械、輕工產(chan)品(pin)等(deng)都離不開(kai)鍍鋅鈍化制(zhi)品(pin)。鍍鋅板卷(juan)因此可分為(wei)熱軋(ya)鍍鋅板卷(juan)和(he)冷軋(ya)熱鍍鋅板卷(juan)，它們主(zhu)要(yao)(yao)用于(yu)建(jian)(jian)筑、家電、汽車、容器、交通及家業等(deng)領域。特別是(shi)(shi)鋼結構(gou)(gou)建(jian)(jian)筑、汽車制(zhi)造、鋼板倉制(zhi)造等(deng)行業。 重慶鍍鋅卷(juan)特點(dian)主(zhu)要(yao)(yao)為(wei)：耐腐蝕強(qiang)、表面質量好、得利于(yu)深加工、經濟(ji)實用等(deng)。

重(zhong)慶鍍鋅板近二十年來鋼帶(dai)連續(xu)熱(re)鍍鋅技(ji)術(shu)、裝(zhuang)備以(yi)及(ji)相應的控制(zhi)手段均有(you)巨(ju)大的發(fa)展(zhan)，使鍍鋅板得(de)以(yi)滿足(zu)汽車面板和(he)家電(dian)用板的苛刻要求，并從(cong)而以(yi)其(qi)比電(dian)鍍鋅合(he)金鋼帶(dai)廉價、耐(nai)蝕性(xing)(xing)優(you)異而大有(you)取代之勢。熱(re)鍍鋅生產技(ji)術(shu)與裝(zhuang)備開發(fa)技(ji)術(shu)及(ji)經驗，通(tong)過技(ji)術(shu)創(chuang)新、優(you)化(hua)設計、精密制(zhi)造以(yi)及(ji)國(guo)外(wai)技(ji)術(shu)合(he)作，突(tu)破制(zhi)約我國(guo)高性(xing)(xing)能汽車用熱(re)鍍鋅鋼板生產技(ji)術(shu)與裝(zhuang)備發(fa)展(zhan)瓶頸。

用(yong)電鍍(du)法(fa)制(zhi)造這種鍍(du)鋅(xin)(xin)(xin)(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)(ban)(ban)具有良好(hao)的(de)加工性(xing)(xing)(xing)。但鍍(du)層較(jiao)薄，耐(nai)腐蝕性(xing)(xing)(xing)不如熱浸法(fa)鍍(du)鋅(xin)(xin)(xin)(xin)(xin)板(ban)(ban)(ban)(ban)(ban)(ban)；單(dan)面鍍(du)和雙面差鍍(du)鋅(xin)(xin)(xin)(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)(ban)(ban)。單(dan)面鍍(du)鋅(xin)(xin)(xin)(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)(ban)(ban)，即(ji)(ji)只在(zai)一面鍍(du)鋅(xin)(xin)(xin)(xin)(xin)的(de)產品。在(zai)焊接(jie)、涂裝(zhuang)、防銹(xiu)處理(li)、加工等(deng)方(fang)面，具有比雙面鍍(du)鋅(xin)(xin)(xin)(xin)(xin)板(ban)(ban)(ban)(ban)(ban)(ban)好(hao)的(de)適應性(xing)(xing)(xing)。為克服單(dan)面未涂鋅(xin)(xin)(xin)(xin)(xin)的(de)缺點，又有一種在(zai)另面涂以薄層鋅(xin)(xin)(xin)(xin)(xin)的(de)鍍(du)鋅(xin)(xin)(xin)(xin)(xin)板(ban)(ban)(ban)(ban)(ban)(ban)，即(ji)(ji)雙面差鍍(du)鋅(xin)(xin)(xin)(xin)(xin)板(ban)(ban)(ban)(ban)(ban)(ban)；合金(jin)、復合鍍(du)鋅(xin)(xin)(xin)(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)(ban)(ban)。它(ta)是用(yong)鋅(xin)(xin)(xin)(xin)(xin)和其他金(jin)屬(shu)如鉛、鋅(xin)(xin)(xin)(xin)(xin)制(zhi)成合金(jin)乃至復合鍍(du)成的(de)鋼(gang)板(ban)(ban)(ban)(ban)(ban)(ban)。這種鋼(gang)板(ban)(ban)(ban)(ban)(ban)(ban)既具有防銹(xiu)性(xing)(xing)(xing)能，又有良好(hao)的(de)涂裝(zhuang)性(xing)(xing)(xing)能。 除上述五種外，還有彩色鍍(du)鋅(xin)(xin)(xin)(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)(ban)(ban)、印花涂裝(zhuang)鍍(du)鋅(xin)(xin)(xin)(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)(ban)(ban)、聚氯乙烯疊(die)層鍍(du)鋅(xin)(xin)(xin)(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)(ban)(ban)等(deng)。但目前常(chang)用(yong)的(de)仍為熱浸鍍(du)鋅(xin)(xin)(xin)(xin)(xin)板(ban)(ban)(ban)(ban)(ban)(ban)。 鍍(du)鋅(xin)(xin)(xin)(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)(ban)(ban)按用(yong)途又可(ke)分為一般用(yong)、屋頂用(yong)、建筑外側板(ban)(ban)(ban)(ban)(ban)(ban)用(yong)、結構(gou)用(yong)、瓦壟板(ban)(ban)(ban)(ban)(ban)(ban)用(yong)、拉伸用(yong)和深沖(chong)用(yong)等(deng)鍍(du)鋅(xin)(xin)(xin)(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)(ban)(ban)。

彩涂卷價格熱鍍鋅生產發展一直處于滯后狀態。20世紀50年代到60年代陸續建成了13條單張鋼板熔劑法熱鍍鋅機組，能力為10萬t/a，但因產量低、成本高、質量差、污染環境、經濟效益差等缺陷已先后停、轉產。從20世紀70年代末，我國才開始建造大型寬帶熱鍍鋅機組。萬源彩涂卷熱鍍(du)鋅帶鋼(gang)在我國(guo)市場一直(zhi)是緊缺(que)品(pin)種。從20世紀90年代中(zhong)期以來，每年都(dou)要(yao)從國(guo)外進口80-100萬t左右。隨著國(guo)內經濟的發展(zhan)，尤(you)其是汽車、家電(dian)及(ji)建筑業(ye)的發展(zhan)，對鍍(du)鋅帶鋼(gang)的需求量也大大增加。