鍍(du)鋅(xin)(xin)鋼(gang)(gang)(gang)板(ban)為(wei)基板(ban)的(de)(de)(de)彩涂(tu)(tu)鋼(gang)(gang)(gang)板(ban)，除有(you)(you)鋅(xin)(xin)保護外，鋅(xin)(xin)層(ceng)(ceng)(ceng)(ceng)上(shang)的(de)(de)(de)有(you)(you)機涂(tu)(tu)層(ceng)(ceng)(ceng)(ceng)起了覆蓋隔離作用(yong)，可防(fang)止(zhi)鋼(gang)(gang)(gang)板(ban)生銹，使(shi)用(yong)壽命比(bi)鍍(du)鋅(xin)(xin)鋼(gang)(gang)(gang)板(ban)更長(chang)，據介(jie)紹涂(tu)(tu)層(ceng)(ceng)(ceng)(ceng)鋼(gang)(gang)(gang)板(ban)的(de)(de)(de)使(shi)用(yong)壽命比(bi)鍍(du)鋅(xin)(xin)鋼(gang)(gang)(gang)板(ban)長(chang)50%。在(zai)(zai)連續機組上(shang)以冷軋帶鋼(gang)(gang)(gang)，鍍(du)鋅(xin)(xin)帶鋼(gang)(gang)(gang)（電(dian)鍍(du)鋅(xin)(xin)和熱(re)鍍(du)鋅(xin)(xin)）為(wei)基板(ban)，經(jing)過表面預(yu)處理（脫脂和化學處理），用(yong)輥(gun)涂(tu)(tu)的(de)(de)(de)方(fang)法，涂(tu)(tu)上(shang)一層(ceng)(ceng)(ceng)(ceng)或(huo)多層(ceng)(ceng)(ceng)(ceng)液(ye)態涂(tu)(tu)料，經(jing)過烘(hong)烤和冷卻所得的(de)(de)(de)板(ban)材即為(wei)涂(tu)(tu)層(ceng)(ceng)(ceng)(ceng)鋼(gang)(gang)(gang)板(ban)。由(you)于涂(tu)(tu)層(ceng)(ceng)(ceng)(ceng)可以有(you)(you)各種不同的(de)(de)(de)顏色，習慣上(shang)把涂(tu)(tu)層(ceng)(ceng)(ceng)(ceng)鋼(gang)(gang)(gang)板(ban)叫做彩色涂(tu)(tu)層(ceng)(ceng)(ceng)(ceng)鋼(gang)(gang)(gang)板(ban)。又由(you)于涂(tu)(tu)層(ceng)(ceng)(ceng)(ceng)是在(zai)(zai)鋼(gang)(gang)(gang)板(ban)成型(xing)加工之前進行的(de)(de)(de)，在(zai)(zai)國外這叫做預(yu)涂(tu)(tu)層(ceng)(ceng)(ceng)(ceng)鋼(gang)(gang)(gang)板(ban)。

鍍鋅(xin)(xin)帶(dai)鋼(gang)的鋅(xin)(xin)層(ceng)特(te)性 電鍍鋅(xin)(xin)層(ceng)是(shi)不能形(xing)(xing)成(cheng)鋅(xin)(xin)花(hua)(hua)(hua)的，熱(re)鍍鋅(xin)(xin)層(ceng)則有鋅(xin)(xin)花(hua)(hua)(hua)，其(qi)形(xing)(xing)成(cheng)過程如下：當鍍鋅(xin)(xin)帶(dai)從鋅(xin)(xin)鍋出來(lai)后，經氣(qi)刀的噴(pen)吹，大量(liang)鋅(xin)(xin)液被吹回鋅(xin)(xin)鍋，這時帶(dai)鋼(gang)表(biao)面(mian)還有純(chun)鋅(xin)(xin)層(ceng)，呈(cheng)液 態附(fu)在鋼(gang)板表(biao)面(mian)，在鋼(gang)板表(biao)面(mian)形(xing)(xing)成(cheng)大量(liang)結(jie)晶核，隨(sui)著鋼(gang)板上升冷卻，使結(jie)晶核慢慢長成(cheng)鋅(xin)(xin)花(hua)(hua)(hua)。冷卻速度(du)越(yue)快(kuai)鋅(xin)(xin)花(hua)(hua)(hua)越(yue)小，冷卻速度(du)越(yue)慢鋅(xin)(xin)花(hua)(hua)(hua)越(yue)大。熱(re)鍍鋅(xin)(xin)帶(dai)鋼(gang)在我國(guo)市場一直是(shi)緊缺(que)品種。從20世紀90年(nian)代(dai)中期以來(lai)，每年(nian)都要從國(guo)外(wai)進口(kou)80-100萬t左右(you)。隨(sui)著國(guo)內經濟的發展，尤(you)其(qi)是(shi)汽車、家電及(ji)建筑業的發展，對(dui)鍍鋅(xin)(xin)帶(dai)鋼(gang)的需求量(liang)也大大增(zeng)加(jia)。

鍍鋅廠家鍍鋅是一種經常采用的經濟而有效的防腐方法。鋅產量的一半左右均用于此種工藝。鍍鋅卷是為防止鋼板表面遭受腐蝕延長其使用壽命，在鋼板表面涂以一層金屬鋅，這種涂鋅的鋼板稱為鍍鋅卷。大足鍍鋅鍍(du)(du)鋅卷(juan)(juan)(juan)主要用于建(jian)筑(zhu)、家電、汽車(che)、容器、交通及(ji)家業等領域。特別是鋼結(jie)構建(jian)筑(zhu)、汽車(che)制(zhi)造、鋼板倉制(zhi)造等行業。耐腐蝕強、表面質(zhi)量(liang)好、得利于深加(jia)工、經(jing)濟(ji)實用等。有(you)關產品(pin)標準都(dou)列明(ming)鍍(du)(du)鋅卷(juan)(juan)(juan)推薦的標準厚(hou)度(du)(du)、長度(du)(du)和(he)寬度(du)(du)及(ji)其允許偏差。鍍(du)(du)鋅卷(juan)(juan)(juan)厚(hou)度(du)(du)偏差一般(ban)在(zai)(zai)0.05mm，長寬偏差一般(ban)在(zai)(zai)5mm ，板材的厚(hou)度(du)(du)一般(ban)在(zai)(zai)0.2-3.2之(zhi)間 。

鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)鋼(gang)板按用(yong)(yong)(yong)(yong)(yong)途(tu)又可分(fen)為一般用(yong)(yong)(yong)(yong)(yong)、屋頂用(yong)(yong)(yong)(yong)(yong)、建筑外側(ce)板用(yong)(yong)(yong)(yong)(yong)、結(jie)(jie)構(gou)用(yong)(yong)(yong)(yong)(yong)、瓦壟板用(yong)(yong)(yong)(yong)(yong)、拉(la)伸(shen)用(yong)(yong)(yong)(yong)(yong)和深沖用(yong)(yong)(yong)(yong)(yong)等鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)鋼(gang)板。對(dui)于一般防保護用(yong)(yong)(yong)(yong)(yong)鍍(du)(du)(du)(du)層，可以采用(yong)(yong)(yong)(yong)(yong)堿(jian)性(xing)鋅(xin)(xin)(xin)(xin)酸鹽鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)彩(cai)色(se)(se)鈍(dun)化(hua)工藝(yi)(yi)。有時為了產品的(de)(de)(de)配色(se)(se)需(xu)要，也可以采用(yong)(yong)(yong)(yong)(yong)藍白色(se)(se)鈍(dun)化(hua)工藝(yi)(yi)，比如軍綠色(se)(se)鈍(dun)化(hua)、黑色(se)(se)鈍(dun)化(hua)等。為提高鋼(gang)管(guan)的(de)(de)(de)耐(nai)腐(fu)(fu)蝕(shi)性(xing)能，對(dui)一般鋼(gang)管(guan)進(jin)行(xing)(xing)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)。鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)卷分(fen)熱鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)和電鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)兩種(zhong)(zhong)，熱鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)層厚(hou)，電鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)成(cheng)本低，表面不(bu)是(shi)很光滑。吹(chui)氧焊(han)管(guan)：用(yong)(yong)(yong)(yong)(yong)作煉(lian)鋼(gang)吹(chui)氧用(yong)(yong)(yong)(yong)(yong)管(guan)，一般用(yong)(yong)(yong)(yong)(yong)小口徑(jing)的(de)(de)(de)焊(han)接鋼(gang)管(guan)，規格由3/8-2寸八種(zhong)(zhong)。用(yong)(yong)(yong)(yong)(yong)08、10、15、20或者195-Q235的(de)(de)(de)鋼(gang)帶(dai)制作成(cheng)的(de)(de)(de)，為了防腐(fu)(fu)蝕(shi)，有得進(jin)行(xing)(xing)滲(shen)鋁(lv)處理。鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)其防護作用(yong)(yong)(yong)(yong)(yong)更(geng)強，抗腐(fu)(fu)蝕(shi)能力強。整個(ge)結(jie)(jie)構(gou)由鋅(xin)(xin)(xin)(xin)，形成(cheng)致密(mi)的(de)(de)(de)四元結(jie)(jie)晶體，此結(jie)(jie)晶體在鋼(gang)板上形成(cheng)一層屏障(zhang)(zhang)， 因(yin)而(er)有效的(de)(de)(de)防止(zhi)腐(fu)(fu)蝕(shi)因(yin)子穿透。 耐(nai)腐(fu)(fu)蝕(shi)性(xing)來自鋅(xin)(xin)(xin)(xin)的(de)(de)(de)障(zhang)(zhang)礙層保護功能強。

樓(lou)(lou)(lou)承(cheng)板鍍(du)(du)(du)鋅(xin)(xin)(xin)首要(yao)起到防(fang)腐的效(xiao)果(guo)，按標準組(zu)合(he)樓(lou)(lou)(lou)板與非組(zu)合(he)樓(lou)(lou)(lou)板壓型鋼板應選(xuan)(xuan)用(yong)熱鍍(du)(du)(du)鋅(xin)(xin)(xin)，不該選(xuan)(xuan)用(yong)電鍍(du)(du)(du)鋅(xin)(xin)(xin)鋼板，其雙面(mian)鍍(du)(du)(du)鋅(xin)(xin)(xin)層總含(han)量(liang)(liang)要(yao)滿足在使用(yong)期間不致銹損的要(yao)求。當(dang)(dang)作為(wei)非組(zu)合(he)樓(lou)(lou)(lou)承(cheng)板時(shi)，鍍(du)(du)(du)鋅(xin)(xin)(xin)層含(han)量(liang)(liang)可選(xuan)(xuan)用(yong)較(jiao)低值(zhi);當(dang)(dang)為(wei)組(zu)合(he)樓(lou)(lou)(lou)承(cheng)板時(shi)，鍍(du)(du)(du)鋅(xin)(xin)(xin)層含(han)量(liang)(liang)不該小于150g/m2。當(dang)(dang)為(wei)組(zu)合(he)樓(lou)(lou)(lou)板且(qie)使用(yong)環境條件較(jiao)為(wei)惡劣時(shi)，鍍(du)(du)(du)鋅(xin)(xin)(xin)層含(han)量(liang)(liang)應選(xuan)(xuan)用(yong)上(shang)限值(zhi)或更(geng)高值(zhi)。更(geng)高的鍍(du)(du)(du)鋅(xin)(xin)(xin)要(yao)求，如雙面(mian)鍍(du)(du)(du)鋅(xin)(xin)(xin)量(liang)(liang)為(wei)300g/m2、350g/m2或鍍(du)(du)(du)鋁(lv)(lv)鋅(xin)(xin)(xin)(5%鋁(lv)(lv))275g/m2、300g/m2等，較(jiao)高的鍍(du)(du)(du)層量(liang)(liang)使組(zu)合(he)樓(lou)(lou)(lou)板有更(geng)長耐久(jiu)性(xing)，同等量(liang)(liang)的鍍(du)(du)(du)鋁(lv)(lv)鋅(xin)(xin)(xin)的防(fang)銹蝕才能(neng)大約兩(liang)倍于一般熱鍍(du)(du)(du)鋅(xin)(xin)(xin)。鍍(du)(du)(du)鋅(xin)(xin)(xin)量(liang)(liang)也不是越厚越好，當(dang)(dang)鍍(du)(du)(du)鋅(xin)(xin)(xin)量(liang)(liang)較(jiao)厚時(shi)，抗剪連接件栓(shuan)釘的焊接質量(liang)(liang)就很難保(bao)證(zheng)，焊接時(shi)，宜選(xuan)(xuan)用(yong)局(ju)部除(chu)鋅(xin)(xin)(xin)處理(li)措(cuo)施。

用(yong)(yong)(yong)電(dian)鍍(du)(du)(du)法(fa)制造這種鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)鋼(gang)(gang)板(ban)(ban)(ban)具(ju)有良好(hao)的加工(gong)性。但鍍(du)(du)(du)層(ceng)較薄(bo)，耐腐蝕性不如熱(re)浸法(fa)鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)板(ban)(ban)(ban)；單面(mian)(mian)(mian)(mian)(mian)鍍(du)(du)(du)和(he)雙(shuang)(shuang)面(mian)(mian)(mian)(mian)(mian)差鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)鋼(gang)(gang)板(ban)(ban)(ban)。單面(mian)(mian)(mian)(mian)(mian)鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)鋼(gang)(gang)板(ban)(ban)(ban)，即只在一(yi)面(mian)(mian)(mian)(mian)(mian)鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)的產(chan)品。在焊(han)接、涂(tu)(tu)裝、防銹處理(li)、加工(gong)等方面(mian)(mian)(mian)(mian)(mian)，具(ju)有比雙(shuang)(shuang)面(mian)(mian)(mian)(mian)(mian)鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)板(ban)(ban)(ban)好(hao)的適應性。為克(ke)服(fu)單面(mian)(mian)(mian)(mian)(mian)未(wei)涂(tu)(tu)鋅(xin)(xin)(xin)(xin)的缺點，又有一(yi)種在另(ling)面(mian)(mian)(mian)(mian)(mian)涂(tu)(tu)以(yi)薄(bo)層(ceng)鋅(xin)(xin)(xin)(xin)的鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)板(ban)(ban)(ban)，即雙(shuang)(shuang)面(mian)(mian)(mian)(mian)(mian)差鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)板(ban)(ban)(ban)；合(he)(he)(he)(he)金(jin)、復(fu)合(he)(he)(he)(he)鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)鋼(gang)(gang)板(ban)(ban)(ban)。它是用(yong)(yong)(yong)鋅(xin)(xin)(xin)(xin)和(he)其(qi)他金(jin)屬如鉛、鋅(xin)(xin)(xin)(xin)制成合(he)(he)(he)(he)金(jin)乃至復(fu)合(he)(he)(he)(he)鍍(du)(du)(du)成的鋼(gang)(gang)板(ban)(ban)(ban)。這種鋼(gang)(gang)板(ban)(ban)(ban)既具(ju)有防銹性能，又有良好(hao)的涂(tu)(tu)裝性能。 除上(shang)述五(wu)種外(wai)，還有彩色鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)鋼(gang)(gang)板(ban)(ban)(ban)、印花涂(tu)(tu)裝鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)鋼(gang)(gang)板(ban)(ban)(ban)、聚氯乙烯疊(die)層(ceng)鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)鋼(gang)(gang)板(ban)(ban)(ban)等。但目(mu)前常用(yong)(yong)(yong)的仍為熱(re)浸鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)板(ban)(ban)(ban)。 鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)鋼(gang)(gang)板(ban)(ban)(ban)按用(yong)(yong)(yong)途又可分為一(yi)般(ban)用(yong)(yong)(yong)、屋頂(ding)用(yong)(yong)(yong)、建筑外(wai)側板(ban)(ban)(ban)用(yong)(yong)(yong)、結構用(yong)(yong)(yong)、瓦壟板(ban)(ban)(ban)用(yong)(yong)(yong)、拉(la)伸用(yong)(yong)(yong)和(he)深沖(chong)用(yong)(yong)(yong)等鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)鋼(gang)(gang)板(ban)(ban)(ban)。