樓(lou)(lou)(lou)承板(ban)(ban)(ban)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)首(shou)要(yao)(yao)起到(dao)防腐的(de)(de)(de)效果，按標(biao)準組(zu)合(he)(he)(he)(he)樓(lou)(lou)(lou)板(ban)(ban)(ban)與非組(zu)合(he)(he)(he)(he)樓(lou)(lou)(lou)板(ban)(ban)(ban)壓(ya)型鋼板(ban)(ban)(ban)應(ying)選(xuan)(xuan)用(yong)(yong)熱鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)，不(bu)該選(xuan)(xuan)用(yong)(yong)電鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)鋼板(ban)(ban)(ban)，其雙(shuang)(shuang)面鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)層總含量(liang)要(yao)(yao)滿足在(zai)使用(yong)(yong)期間不(bu)致銹損的(de)(de)(de)要(yao)(yao)求。當(dang)作(zuo)為(wei)非組(zu)合(he)(he)(he)(he)樓(lou)(lou)(lou)承板(ban)(ban)(ban)時(shi)，鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)層含量(liang)可選(xuan)(xuan)用(yong)(yong)較(jiao)低值(zhi);當(dang)為(wei)組(zu)合(he)(he)(he)(he)樓(lou)(lou)(lou)承板(ban)(ban)(ban)時(shi)，鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)層含量(liang)不(bu)該小于(yu)150g/m2。當(dang)為(wei)組(zu)合(he)(he)(he)(he)樓(lou)(lou)(lou)板(ban)(ban)(ban)且使用(yong)(yong)環境條(tiao)件(jian)較(jiao)為(wei)惡(e)劣時(shi)，鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)層含量(liang)應(ying)選(xuan)(xuan)用(yong)(yong)上限(xian)值(zhi)或更(geng)高(gao)值(zhi)。更(geng)高(gao)的(de)(de)(de)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)要(yao)(yao)求，如(ru)雙(shuang)(shuang)面鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)量(liang)為(wei)300g/m2、350g/m2或鍍(du)(du)(du)(du)鋁鋅(xin)(xin)(xin)(5%鋁)275g/m2、300g/m2等(deng)，較(jiao)高(gao)的(de)(de)(de)鍍(du)(du)(du)(du)層量(liang)使組(zu)合(he)(he)(he)(he)樓(lou)(lou)(lou)板(ban)(ban)(ban)有更(geng)長(chang)耐久性，同等(deng)量(liang)的(de)(de)(de)鍍(du)(du)(du)(du)鋁鋅(xin)(xin)(xin)的(de)(de)(de)防銹蝕(shi)才能大約兩倍于(yu)一般熱鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)。鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)量(liang)也(ye)不(bu)是越厚越好(hao)，當(dang)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)量(liang)較(jiao)厚時(shi)，抗剪連(lian)接件(jian)栓(shuan)釘的(de)(de)(de)焊接質量(liang)就很難保證，焊接時(shi)，宜選(xuan)(xuan)用(yong)(yong)局部除鋅(xin)(xin)(xin)處理(li)措施。

鍍(du)鋅(xin)(xin)板選擇要(yao)(yao)注(zhu)重(zhong)的(de)(de)(de)幾個要(yao)(yao)點，工(gong)業(ye)企業(ye)的(de)(de)(de)客戶選擇專(zhuan)用工(gong)業(ye)原料(liao)，要(yao)(yao)注(zhu)重(zhong)從四(si)個標(biao)準(zhun)(zhun)。一是(shi)(shi)要(yao)(yao)注(zhu)重(zhong)品(pin)(pin)牌來進(jin)行(xing)選擇，因為鍍(du)鋅(xin)(xin)技(ji)術(shu)的(de)(de)(de)要(yao)(yao)求嚴格，所(suo)以有(you)的(de)(de)(de)基礎(chu)，當然(ran)產品(pin)(pin)質(zhi)量(liang)與技(ji)術(shu)標(biao)準(zhun)(zhun)都(dou)會更可靠(kao)，都(dou)會有(you)好的(de)(de)(de)專(zhuan)業(ye)標(biao)準(zhun)(zhun)。二是(shi)(shi)要(yao)(yao)注(zhu)重(zhong)產品(pin)(pin)本身的(de)(de)(de)鍍(du)層(ceng)(ceng)質(zhi)量(liang)，鍍(du)層(ceng)(ceng)一要(yao)(yao)靠(kao)技(ji)術(shu)，二要(yao)(yao)靠(kao)純度，所(suo)以從產品(pin)(pin)表面來看質(zhi)量(liang)，這(zhe)(zhe)是(shi)(shi)基本也是(shi)(shi)重(zhong)要(yao)(yao)的(de)(de)(de)一個標(biao)準(zhun)(zhun)。三是(shi)(shi)要(yao)(yao)看基礎(chu)材(cai)(cai)料(liao)。鍍(du)鋅(xin)(xin)板基礎(chu)金屬材(cai)(cai)料(liao)的(de)(de)(de)質(zhi)量(liang)，與成(cheng)品(pin)(pin)鍍(du)鋅(xin)(xin)板的(de)(de)(de)質(zhi)量(liang)與耐用性密(mi)切相關，所(suo)以在進(jin)行(xing)產品(pin)(pin)選擇的(de)(de)(de)時候，需要(yao)(yao)注(zhu)重(zhong)這(zhe)(zhe)個細(xi)節，而材(cai)(cai)料(liao)的(de)(de)(de)提供(gong)，就是(shi)(shi)對于工(gong)業(ye)生(sheng)產來說(shuo)，有(you)基礎(chu)條件。四(si)是(shi)(shi)要(yao)(yao)注(zhu)重(zhong)價(jia)格對比，不是(shi)(shi)好的(de)(de)(de)就是(shi)(shi)貴的(de)(de)(de)，但是(shi)(shi)如(ru)果廉價(jia)的(de)(de)(de)把產品(pin)(pin)，那是(shi)(shi)不可信的(de)(de)(de)。

鍍(du)(du)(du)(du)(du)鋅(xin)(xin)鋼板(ban)按用(yong)(yong)(yong)(yong)途又可(ke)分為一(yi)(yi)(yi)般用(yong)(yong)(yong)(yong)、屋頂(ding)用(yong)(yong)(yong)(yong)、建筑外(wai)側板(ban)用(yong)(yong)(yong)(yong)、結構用(yong)(yong)(yong)(yong)、瓦壟板(ban)用(yong)(yong)(yong)(yong)、拉伸(shen)用(yong)(yong)(yong)(yong)和深沖用(yong)(yong)(yong)(yong)等鍍(du)(du)(du)(du)(du)鋅(xin)(xin)鋼板(ban)。對于一(yi)(yi)(yi)般防(fang)(fang)保護(hu)用(yong)(yong)(yong)(yong)鍍(du)(du)(du)(du)(du)層，可(ke)以(yi)采(cai)用(yong)(yong)(yong)(yong)堿性(xing)鋅(xin)(xin)酸鹽鍍(du)(du)(du)(du)(du)鋅(xin)(xin)彩色(se)(se)(se)鈍化工(gong)藝。有時(shi)為了產品的(de)(de)配色(se)(se)(se)需(xu)要，也可(ke)以(yi)采(cai)用(yong)(yong)(yong)(yong)藍(lan)白色(se)(se)(se)鈍化工(gong)藝，比(bi)如軍(jun)綠色(se)(se)(se)鈍化、黑色(se)(se)(se)鈍化等。為提高鋼管(guan)(guan)的(de)(de)耐腐(fu)蝕性(xing)能，對一(yi)(yi)(yi)般鋼管(guan)(guan)進(jin)行鍍(du)(du)(du)(du)(du)鋅(xin)(xin)。鍍(du)(du)(du)(du)(du)鋅(xin)(xin)卷分熱(re)鍍(du)(du)(du)(du)(du)鋅(xin)(xin)和電(dian)鍍(du)(du)(du)(du)(du)鋅(xin)(xin)兩(liang)種，熱(re)鍍(du)(du)(du)(du)(du)鋅(xin)(xin)鍍(du)(du)(du)(du)(du)鋅(xin)(xin)層厚(hou)，電(dian)鍍(du)(du)(du)(du)(du)鋅(xin)(xin)成(cheng)(cheng)本低，表面(mian)不(bu)是很(hen)光滑。吹(chui)氧(yang)焊(han)管(guan)(guan)：用(yong)(yong)(yong)(yong)作(zuo)煉鋼吹(chui)氧(yang)用(yong)(yong)(yong)(yong)管(guan)(guan)，一(yi)(yi)(yi)般用(yong)(yong)(yong)(yong)小口徑的(de)(de)焊(han)接鋼管(guan)(guan)，規格由3/8-2寸八種。用(yong)(yong)(yong)(yong)08、10、15、20或者195-Q235的(de)(de)鋼帶(dai)制作(zuo)成(cheng)(cheng)的(de)(de)，為了防(fang)(fang)腐(fu)蝕，有得進(jin)行滲鋁處理。鍍(du)(du)(du)(du)(du)鋅(xin)(xin)其防(fang)(fang)護(hu)作(zuo)用(yong)(yong)(yong)(yong)更強(qiang)(qiang)，抗腐(fu)蝕能力強(qiang)(qiang)。整個結構由鋅(xin)(xin)，形成(cheng)(cheng)致密的(de)(de)四(si)元結晶(jing)體，此(ci)結晶(jing)體在鋼板(ban)上形成(cheng)(cheng)一(yi)(yi)(yi)層屏障， 因而有效的(de)(de)防(fang)(fang)止腐(fu)蝕因子穿透。 耐腐(fu)蝕性(xing)來自鋅(xin)(xin)的(de)(de)障礙層保護(hu)功能強(qiang)(qiang)。

彩涂卷廠家鍍鋅帶鋼的鋅層特性 電鍍鋅層是不能形成鋅花的，熱鍍鋅層則有鋅花，其形成過程如下：當鍍鋅帶從鋅鍋出來后，經氣刀的噴吹，大量鋅液被吹回鋅鍋，這時帶鋼表面還有純鋅層，呈液 態附在鋼板表面，在鋼板表面形成大量結晶核，隨著鋼板上升冷卻，使結晶核慢慢長成鋅花。珠海酒鋼彩涂卷冷卻(que)速度越(yue)(yue)快鋅(xin)花越(yue)(yue)小，冷卻(que)速度越(yue)(yue)慢(man)鋅(xin)花越(yue)(yue)大(da)。熱(re)鍍鋅(xin)帶鋼(gang)在我國(guo)市場一直是緊缺品種。從20世(shi)紀90年代中期(qi)以來，每年都要從國(guo)外進口(kou)80-100萬t左右。隨(sui)著國(guo)內經濟的(de)發展(zhan)，尤(you)其是汽車、家(jia)電及(ji)建筑業的(de)發展(zhan)，對鍍鋅(xin)帶鋼(gang)的(de)需(xu)求量也大(da)大(da)增加(jia)。