鍍鋅板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。湖北鍍鋅板熱鍍鋅帶鋼在(zai)我(wo)國市(shi)場一直是(shi)緊缺(que)品種。從20世紀90年代中期以(yi)來，每年都要從國外(wai)進口80-100萬t左右。隨著國內(nei)經濟的(de)發(fa)(fa)展(zhan)，尤其是(shi)汽車、家電及(ji)建筑業的(de)發(fa)(fa)展(zhan)，對鍍鋅帶鋼的(de)需求量也大大增加。

鍍(du)(du)(du)(du)(du)鋅(xin)鋼板的(de)(de)表面鍍(du)(du)(du)(du)(du)鋅(xin)主要(yao)采(cai)用(yong)(yong)的(de)(de)方法是熱鍍(du)(du)(du)(du)(du)鋅(xin)。熱鍍(du)(du)(du)(du)(du)鋅(xin)是由(you)較古(gu)老的(de)(de)熱鍍(du)(du)(du)(du)(du)方法發展(zhan)而來的(de)(de)，自(zi)從(cong)1836年(nian)法國把熱鍍(du)(du)(du)(du)(du)鋅(xin)應用(yong)(yong)于工業以來，已(yi)經有一百七十年(nian)的(de)(de)歷史了(le)(le)。然而，熱鍍(du)(du)(du)(du)(du)鋅(xin)工業是近三(san)十年(nian)來伴(ban)隨冷軋(ya)帶鋼的(de)(de)飛速發展(zhan)而得到了(le)(le)大規模(mo)發展(zhan)。鍍(du)(du)(du)(du)(du)鋅(xin)溶液有氰化物(wu)鍍(du)(du)(du)(du)(du)液和(he)無氰鍍(du)(du)(du)(du)(du)液兩類。氰化物(wu)鍍(du)(du)(du)(du)(du)液中(zhong)分微氰、低氰、中(zhong)氰、和(he)高氰幾類。無氰鍍(du)(du)(du)(du)(du)液有堿性(xing)鋅(xin)酸鹽(yan)(yan)(yan)鍍(du)(du)(du)(du)(du)液、銨(an)鹽(yan)(yan)(yan)鍍(du)(du)(du)(du)(du)液、硫酸鹽(yan)(yan)(yan)鍍(du)(du)(du)(du)(du)液及無氨氯化物(wu)鍍(du)(du)(du)(du)(du)液等。氰化鍍(du)(du)(du)(du)(du)鋅(xin)溶液均(jun)鍍(du)(du)(du)(du)(du)能(neng)力好，得到的(de)(de)鍍(du)(du)(du)(du)(du)層光滑細致(zhi)，在生(sheng)產(chan)中(zhong)被長期(qi)采(cai)用(yong)(yong)。但由(you)于氰化物(wu)劇毒，對環(huan)境污染嚴重，近年(nian)來已(yi)趨向于采(cai)用(yong)(yong)低氰、微氰、無氰鍍(du)(du)(du)(du)(du)鋅(xin)溶液。

鍍(du)(du)(du)鋅(xin)鋼(gang)(gang)板(ban)(ban)(ban)(ban)是為(wei)(wei)防止鋼(gang)(gang)板(ban)(ban)(ban)(ban)表(biao)面(mian)遭受腐(fu)蝕，延長(chang)其使用(yong)(yong)壽命，在(zai)鋼(gang)(gang)板(ban)(ban)(ban)(ban)表(biao)面(mian)涂(tu)以一層(ceng)(ceng)金屬鋅(xin)，這種(zhong)(zhong)(zhong)涂(tu)鋅(xin)的(de)(de)薄(bo)鋼(gang)(gang)板(ban)(ban)(ban)(ban)稱為(wei)(wei)鍍(du)(du)(du)鋅(xin)板(ban)(ban)(ban)(ban)。按(an)生產(chan)及加工方法可分(fen)為(wei)(wei)以下幾類：熱(re)(re)浸(jin)鍍(du)(du)(du)鋅(xin)鋼(gang)(gang)板(ban)(ban)(ban)(ban)。將薄(bo)鋼(gang)(gang)板(ban)(ban)(ban)(ban)浸(jin)入(ru)熔(rong) 微商貨(huo)源解的(de)(de)鋅(xin)槽(cao)中(zhong)，使其表(biao)面(mian)粘附一層(ceng)(ceng)鋅(xin)的(de)(de)薄(bo)鋼(gang)(gang)板(ban)(ban)(ban)(ban)。目(mu)前(qian)主要(yao)采用(yong)(yong)連續(xu)(xu)鍍(du)(du)(du)鋅(xin)工藝生產(chan)，即把成(cheng)卷(juan)的(de)(de)鋼(gang)(gang)板(ban)(ban)(ban)(ban)連續(xu)(xu)浸(jin)在(zai)熔(rong)解有鋅(xin)的(de)(de)鍍(du)(du)(du)槽(cao)中(zhong)制成(cheng)鍍(du)(du)(du)鋅(xin)鋼(gang)(gang)板(ban)(ban)(ban)(ban)；合金化鍍(du)(du)(du)鋅(xin)鋼(gang)(gang)板(ban)(ban)(ban)(ban)。這種(zhong)(zhong)(zhong)鋼(gang)(gang)板(ban)(ban)(ban)(ban)也是用(yong)(yong)熱(re)(re)浸(jin)法制造，但在(zai)出槽(cao)后，立即把它加熱(re)(re)到５００℃左右，使其生成(cheng)鋅(xin)和(he)鐵的(de)(de)合金被膜。這種(zhong)(zhong)(zhong)鍍(du)(du)(du)鋅(xin)板(ban)(ban)(ban)(ban)具有良(liang)好的(de)(de)涂(tu)料的(de)(de)密(mi)著性和(he)焊(han)接性。

重(zhong)慶鍍(du)(du)(du)鋅(xin)(xin)卷主要有：脫(tuo)(tuo)落、劃傷(shang)、鈍化(hua)斑(ban)、鋅(xin)(xin)粒(li)、厚(hou)邊、氣(qi)(qi)刀條痕、氣(qi)(qi)刀刮痕、露鋼(gang)(gang)(gang)、夾雜、機械損傷(shang)、鋼(gang)(gang)(gang)基性能不良、浪邊、瓢曲、尺寸不合(he)(he)、壓印(yin)(yin)、鋅(xin)(xin)層厚(hou)度(du)(du)不合(he)(he)、輥印(yin)(yin)等。鋅(xin)(xin)層脫(tuo)(tuo)落的(de)主要原因有：表(biao)面(mian)氧(yang)化(hua)、有硅化(hua)合(he)(he)物(wu)、冷扎乳(ru)化(hua)液太臟(zang)、NOF段氧(yang)化(hua)氣(qi)(qi)氛及保(bao)護(hu)氣(qi)(qi)體(ti)露點(dian)太高(gao)、空燃比不合(he)(he)理(li)、氫(qing)氣(qi)(qi)流量(liang)偏(pian)(pian)低(di)、爐(lu)(lu)(lu)子有氧(yang)滲入，帶(dai)鋼(gang)(gang)(gang)入鍋(guo)溫度(du)(du)偏(pian)(pian)低(di)，RWP段爐(lu)(lu)(lu)壓偏(pian)(pian)低(di)及爐(lu)(lu)(lu)門(men)吸風、NOF段爐(lu)(lu)(lu)溫偏(pian)(pian)低(di)，油(you)脂蒸發不盡(jin)、鋅(xin)(xin)鍋(guo)鋁含(han)量(liang)偏(pian)(pian)低(di)、機組速度(du)(du)太快、還原不充分、鋅(xin)(xin)液中停(ting)留時(shi)間(jian)太短、鍍(du)(du)(du)層偏(pian)(pian)厚(hou)。白(bai)銹和黑斑(ban)產(chan)生的(de)原因有：黑斑(ban)是白(bai)銹進一步(bu)氧(yang)化(hua)形(xing)成的(de)鍍(du)(du)(du)鋅(xin)(xin)板的(de)特點(dian)與用途(tu)。鍍(du)(du)(du)鋅(xin)(xin)卷板是以熱軋鋼(gang)(gang)(gang)帶(dai)或冷軋鋼(gang)(gang)(gang)帶(dai)為基板，經(jing)過連續熱浸鍍(du)(du)(du)鋅(xin)(xin)工藝而生產(chan)出來的(de)， 產(chan)品具有耐腐蝕(shi)強、 表(biao)面(mian)質(zhi)量(liang)好、有利于深加工、經(jing)濟實(shi)用等特點(dian)。