重慶鍍(du)(du)鋅卷主要(yao)有(you)(you)(you)：脫落(luo)、劃(hua)傷、鈍化(hua)斑、鋅粒(li)、厚(hou)邊(bian)(bian)、氣(qi)(qi)刀條痕(hen)(hen)、氣(qi)(qi)刀刮痕(hen)(hen)、露鋼、夾(jia)雜、機械損傷、鋼基性能不良、浪(lang)邊(bian)(bian)、瓢曲、尺(chi)寸不合(he)、壓印(yin)、鋅層(ceng)厚(hou)度不合(he)、輥印(yin)等(deng)。鋅層(ceng)脫落(luo)的(de)(de)主要(yao)原(yuan)(yuan)(yuan)因有(you)(you)(you)：表(biao)面氧化(hua)、有(you)(you)(you)硅(gui)化(hua)合(he)物(wu)、冷(leng)扎乳化(hua)液(ye)太(tai)臟(zang)、NOF段(duan)氧化(hua)氣(qi)(qi)氛及保護(hu)氣(qi)(qi)體(ti)露點太(tai)高、空燃比不合(he)理、氫(qing)氣(qi)(qi)流量偏(pian)低、爐子有(you)(you)(you)氧滲入，帶(dai)鋼入鍋(guo)溫度偏(pian)低，RWP段(duan)爐壓偏(pian)低及爐門吸(xi)風、NOF段(duan)爐溫偏(pian)低，油(you)脂蒸發(fa)不盡、鋅鍋(guo)鋁含量偏(pian)低、機組速(su)度太(tai)快、還原(yuan)(yuan)(yuan)不充分、鋅液(ye)中停留(liu)時(shi)間太(tai)短(duan)、鍍(du)(du)層(ceng)偏(pian)厚(hou)。白(bai)銹和黑斑產生的(de)(de)原(yuan)(yuan)(yuan)因有(you)(you)(you)：黑斑是白(bai)銹進一步氧化(hua)形成的(de)(de)鍍(du)(du)鋅板的(de)(de)特(te)點與用途。鍍(du)(du)鋅卷板是以熱軋(ya)鋼帶(dai)或冷(leng)軋(ya)鋼帶(dai)為基板，經過連續熱浸(jin)鍍(du)(du)鋅工(gong)藝而(er)生產出來的(de)(de)， 產品具有(you)(you)(you)耐(nai)腐蝕(shi)強、 表(biao)面質量好、有(you)(you)(you)利于(yu)深加工(gong)、經濟實用等(deng)特(te)點。

眉山酒鋼鍍鋅鋼樓承板鍍鋅首要起到防腐的效果，按標準組合樓板與非組合樓板壓型鋼板應選用熱鍍鋅，不該選用電鍍鋅鋼板，其雙面鍍鋅層總含量要滿足在使用期間不致銹損的要求。當作為非組合樓承板時，鍍鋅層含量可選用較低值;當為組合樓承板時，鍍鋅層含量不該小于150g/m2。當為組合樓板且使用環境條件較為惡劣時，鍍鋅層含量應選用上限值或更高值。更高的鍍鋅要求，如雙面鍍鋅量為300g/m2、350g/m2或鍍鋁鋅(5%鋁)275g/m2、300g/m2等，較高的鍍層量使組合樓板有更長耐久性，同等量的鍍鋁鋅的防銹蝕才能大約兩倍于一般熱鍍鋅。鍍鋅鋼批發鍍(du)鋅量(liang)(liang)也不是越(yue)厚越(yue)好，當鍍(du)鋅量(liang)(liang)較厚時(shi)，抗剪(jian)連接件栓釘的焊接質量(liang)(liang)就很難保(bao)證，焊接時(shi)，宜選用(yong)局部(bu)除鋅處理措施(shi)。

鍍鋅(xin)(xin)(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)是為防(fang)止鋼(gang)(gang)(gang)板(ban)表(biao)面遭受腐蝕，延長其使用(yong)壽命，在鋼(gang)(gang)(gang)板(ban)表(biao)面涂以一(yi)層金屬鋅(xin)(xin)(xin)(xin)(xin)，這種涂鋅(xin)(xin)(xin)(xin)(xin)的(de)(de)薄鋼(gang)(gang)(gang)板(ban)稱為鍍鋅(xin)(xin)(xin)(xin)(xin)板(ban)。按生產及加工方法可分為以下幾(ji)類：熱(re)(re)浸(jin)鍍鋅(xin)(xin)(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)。將薄鋼(gang)(gang)(gang)板(ban)浸(jin)入熔 微(wei)商貨源解(jie)的(de)(de)鋅(xin)(xin)(xin)(xin)(xin)槽中(zhong)，使其表(biao)面粘附一(yi)層鋅(xin)(xin)(xin)(xin)(xin)的(de)(de)薄鋼(gang)(gang)(gang)板(ban)。目前主(zhu)要采用(yong)連(lian)(lian)續(xu)鍍鋅(xin)(xin)(xin)(xin)(xin)工藝生產，即把成(cheng)卷(juan)的(de)(de)鋼(gang)(gang)(gang)板(ban)連(lian)(lian)續(xu)浸(jin)在熔解(jie)有鋅(xin)(xin)(xin)(xin)(xin)的(de)(de)鍍槽中(zhong)制成(cheng)鍍鋅(xin)(xin)(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)；合金化鍍鋅(xin)(xin)(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)。這種鋼(gang)(gang)(gang)板(ban)也是用(yong)熱(re)(re)浸(jin)法制造，但在出槽后，立即把它加熱(re)(re)到５００℃左右，使其生成(cheng)鋅(xin)(xin)(xin)(xin)(xin)和鐵的(de)(de)合金被膜。這種鍍鋅(xin)(xin)(xin)(xin)(xin)板(ban)具(ju)有良好的(de)(de)涂料的(de)(de)密著(zhu)性和焊接(jie)性。

重慶樓(lou)承(cheng)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)的(de)(de)(de)鍍(du)(du)(du)(du)鋅(xin)量(liang)沒有(you)(you)一個具體(ti)的(de)(de)(de)標準，制作壓(ya)型(xing)鋼(gang)(gang)(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)的(de)(de)(de)冷軋(ya)鋼(gang)(gang)(gang)(gang)(gang)卷須連續熱(re)(re)浸(jin)(jin)鍍(du)(du)(du)(du)鋅(xin)（或(huo)鍍(du)(du)(du)(du)鋁(lv)鋅(xin)），鍍(du)(du)(du)(du)（鋁(lv)）鋅(xin)量(liang)視設計要(yao)求(qiu)而定(ding)。樓(lou)承(cheng)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)用壓(ya)型(xing)鋼(gang)(gang)(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)宜選擇熱(re)(re)浸(jin)(jin)鍍(du)(du)(du)(du)鋅(xin)鋼(gang)(gang)(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)。不允許使(shi)用電鍍(du)(du)(du)(du)鋅(xin)鋼(gang)(gang)(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)，電鍍(du)(du)(du)(du)鋅(xin)鋼(gang)(gang)(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)僅在基材(cai)表(biao)面形成保(bao)護層，防(fang)腐(fu)能力有(you)(you)限。目(mu)前市場上有(you)(you)鍍(du)(du)(du)(du)鋅(xin)鋼(gang)(gang)(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)（鍍(du)(du)(du)(du)層含鋁(lv)5%或(huo)55%），在酸性(xing)環(huan)境下(xia)的(de)(de)(de)防(fang)腐(fu)效果(guo)由于(yu)熱(re)(re)浸(jin)(jin)鍍(du)(du)(du)(du)鋅(xin)鋼(gang)(gang)(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)，但在混凝(ning)土的(de)(de)(de)堿性(xing)條件下(xia)，鍍(du)(du)(du)(du)鋁(lv)鋅(xin)的(de)(de)(de)防(fang)腐(fu)蝕性(xing)能低(di)于(yu)熱(re)(re)浸(jin)(jin)鍍(du)(du)(du)(du)鋅(xin)鋼(gang)(gang)(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)，且(qie)鋁(lv)會和混凝(ning)土發生反應(ying)，并降低(di)混凝(ning)土與鋼(gang)(gang)(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)的(de)(de)(de)粘結(jie)性(xing)能。因此參(can)考國外規范，及國內外工程(cheng)，行家壓(ya)型(xing)鋼(gang)(gang)(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)不建議(yi)使(shi)用鍍(du)(du)(du)(du)鋁(lv)鋅(xin)鋼(gang)(gang)(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)。