重慶鍍鋅(xin)卷主(zhu)要有(you)：脫(tuo)落(luo)、劃(hua)傷、鈍化(hua)(hua)斑、鋅(xin)粒、厚(hou)邊、氣刀(dao)條痕、氣刀(dao)刮痕、露鋼(gang)、夾雜、機械(xie)損傷、鋼(gang)基(ji)性能不(bu)良、浪(lang)邊、瓢曲、尺寸不(bu)合、壓(ya)印(yin)、鋅(xin)層(ceng)厚(hou)度(du)不(bu)合、輥印(yin)等。鋅(xin)層(ceng)脫(tuo)落(luo)的主(zhu)要原(yuan)因有(you)：表面(mian)氧化(hua)(hua)、有(you)硅(gui)化(hua)(hua)合物(wu)、冷(leng)(leng)扎乳(ru)化(hua)(hua)液太(tai)臟、NOF段氧化(hua)(hua)氣氛及保(bao)護(hu)氣體露點太(tai)高、空燃比(bi)不(bu)合理、氫氣流量偏(pian)低(di)、爐(lu)子有(you)氧滲(shen)入(ru)，帶(dai)鋼(gang)入(ru)鍋(guo)溫度(du)偏(pian)低(di)，RWP段爐(lu)壓(ya)偏(pian)低(di)及爐(lu)門(men)吸風(feng)、NOF段爐(lu)溫偏(pian)低(di)，油脂(zhi)蒸發不(bu)盡、鋅(xin)鍋(guo)鋁含量偏(pian)低(di)、機組速度(du)太(tai)快、還原(yuan)不(bu)充分、鋅(xin)液中停留時間太(tai)短、鍍層(ceng)偏(pian)厚(hou)。白(bai)銹和黑斑產(chan)生(sheng)的原(yuan)因有(you)：黑斑是白(bai)銹進一步氧化(hua)(hua)形成(cheng)的鍍鋅(xin)板(ban)的特點與用途(tu)。鍍鋅(xin)卷板(ban)是以熱軋鋼(gang)帶(dai)或(huo)冷(leng)(leng)軋鋼(gang)帶(dai)為基(ji)板(ban)，經過連(lian)續熱浸鍍鋅(xin)工(gong)藝而生(sheng)產(chan)出來的， 產(chan)品具有(you)耐腐蝕強、 表面(mian)質量好、有(you)利于深加工(gong)、經濟實用等特點。

用(yong)電鍍(du)(du)法(fa)制造這種(zhong)鍍(du)(du)鋅(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)具有(you)(you)良(liang)好的(de)加(jia)工性(xing)。但鍍(du)(du)層(ceng)較薄(bo)，耐(nai)腐蝕性(xing)不如熱浸(jin)法(fa)鍍(du)(du)鋅(xin)(xin)板(ban)(ban)(ban)；單面(mian)(mian)(mian)(mian)鍍(du)(du)和(he)雙面(mian)(mian)(mian)(mian)差鍍(du)(du)鋅(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)。單面(mian)(mian)(mian)(mian)鍍(du)(du)鋅(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)，即(ji)只在一面(mian)(mian)(mian)(mian)鍍(du)(du)鋅(xin)(xin)的(de)產品。在焊接、涂裝、防銹處(chu)理(li)、加(jia)工等方面(mian)(mian)(mian)(mian)，具有(you)(you)比雙面(mian)(mian)(mian)(mian)鍍(du)(du)鋅(xin)(xin)板(ban)(ban)(ban)好的(de)適應性(xing)。為克服單面(mian)(mian)(mian)(mian)未(wei)涂鋅(xin)(xin)的(de)缺點，又有(you)(you)一種(zhong)在另面(mian)(mian)(mian)(mian)涂以(yi)薄(bo)層(ceng)鋅(xin)(xin)的(de)鍍(du)(du)鋅(xin)(xin)板(ban)(ban)(ban)，即(ji)雙面(mian)(mian)(mian)(mian)差鍍(du)(du)鋅(xin)(xin)板(ban)(ban)(ban)；合(he)金、復(fu)合(he)鍍(du)(du)鋅(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)。它是(shi)用(yong)鋅(xin)(xin)和(he)其(qi)他金屬(shu)如鉛、鋅(xin)(xin)制成合(he)金乃至(zhi)復(fu)合(he)鍍(du)(du)成的(de)鋼(gang)(gang)(gang)板(ban)(ban)(ban)。這種(zhong)鋼(gang)(gang)(gang)板(ban)(ban)(ban)既(ji)具有(you)(you)防銹性(xing)能(neng)，又有(you)(you)良(liang)好的(de)涂裝性(xing)能(neng)。 除上(shang)述五種(zhong)外，還(huan)有(you)(you)彩色鍍(du)(du)鋅(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)、印花(hua)涂裝鍍(du)(du)鋅(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)、聚氯(lv)乙烯疊層(ceng)鍍(du)(du)鋅(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)等。但目前(qian)常用(yong)的(de)仍為熱浸(jin)鍍(du)(du)鋅(xin)(xin)板(ban)(ban)(ban)。 鍍(du)(du)鋅(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)按用(yong)途(tu)又可(ke)分為一般用(yong)、屋頂用(yong)、建(jian)筑外側板(ban)(ban)(ban)用(yong)、結構(gou)用(yong)、瓦壟板(ban)(ban)(ban)用(yong)、拉(la)伸用(yong)和(he)深沖(chong)用(yong)等鍍(du)(du)鋅(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)。

北京白鐵重慶鍍鋅板按生產及加工方法可分為以下幾類： 熱浸鍍鋅鋼板。將薄鋼板浸入熔解的鋅槽中，使其表面粘附一層鋅的薄鋼板。目前主要采用連續鍍鋅工藝生產，即把成卷的鋼板連續浸在熔解有鋅的鍍槽中制成鍍鋅鋼板； 合金化鍍鋅鋼板。白鐵批發為克服單面未(wei)涂(tu)鋅的缺點，又(you)有一種(zhong)在另面涂(tu)以薄層鋅的鍍(du)(du)鋅板(ban)(ban)，即雙面差鍍(du)(du)鋅板(ban)(ban)；合(he)(he)金(jin)、復(fu)合(he)(he)鍍(du)(du)鋅鋼板(ban)(ban)。它(ta)是用鋅和其(qi)他金(jin)屬如鉛、鋅制成合(he)(he)金(jin)乃至(zhi)復(fu)合(he)(he)鍍(du)(du)成的鋼板(ban)(ban)。這種(zhong)鋼板(ban)(ban)既具有防銹性(xing)能，又(you)有良好的涂(tu)裝性(xing)能。

重慶鍍(du)鋅(xin)板(ban)近二十(shi)年來(lai)鋼(gang)帶(dai)連續熱鍍(du)鋅(xin)技(ji)(ji)(ji)術(shu)(shu)、裝(zhuang)備以及相應的(de)(de)控制(zhi)(zhi)手段(duan)均(jun)有巨大(da)的(de)(de)發展，使鍍(du)鋅(xin)板(ban)得以滿(man)足(zu)汽(qi)車面板(ban)和家電用板(ban)的(de)(de)苛刻要求(qiu)，并從而以其比電鍍(du)鋅(xin)合金鋼(gang)帶(dai)廉價、耐蝕性優(you)異而大(da)有取代(dai)之(zhi)勢。熱鍍(du)鋅(xin)生(sheng)產技(ji)(ji)(ji)術(shu)(shu)與裝(zhuang)備開發技(ji)(ji)(ji)術(shu)(shu)及經驗，通過技(ji)(ji)(ji)術(shu)(shu)創新(xin)、優(you)化設(she)計、精密制(zhi)(zhi)造以及國外(wai)技(ji)(ji)(ji)術(shu)(shu)合作，突破(po)制(zhi)(zhi)約我國高性能汽(qi)車用熱鍍(du)鋅(xin)鋼(gang)板(ban)生(sheng)產技(ji)(ji)(ji)術(shu)(shu)與裝(zhuang)備發展瓶頸。