樓(lou)承(cheng)板(ban)(ban)鍍(du)(du)(du)鋅(xin)(xin)首要(yao)(yao)(yao)起到防腐(fu)的效果，按標準組(zu)合樓(lou)板(ban)(ban)與非(fei)組(zu)合樓(lou)板(ban)(ban)壓(ya)型(xing)鋼板(ban)(ban)應(ying)選(xuan)用(yong)(yong)(yong)熱鍍(du)(du)(du)鋅(xin)(xin)，不(bu)該選(xuan)用(yong)(yong)(yong)電鍍(du)(du)(du)鋅(xin)(xin)鋼板(ban)(ban)，其雙面鍍(du)(du)(du)鋅(xin)(xin)層(ceng)(ceng)(ceng)總(zong)含(han)量(liang)要(yao)(yao)(yao)滿足在使用(yong)(yong)(yong)期間不(bu)致銹損的要(yao)(yao)(yao)求。當作為(wei)非(fei)組(zu)合樓(lou)承(cheng)板(ban)(ban)時，鍍(du)(du)(du)鋅(xin)(xin)層(ceng)(ceng)(ceng)含(han)量(liang)可選(xuan)用(yong)(yong)(yong)較低值;當為(wei)組(zu)合樓(lou)承(cheng)板(ban)(ban)時，鍍(du)(du)(du)鋅(xin)(xin)層(ceng)(ceng)(ceng)含(han)量(liang)不(bu)該小(xiao)于150g/m2。當為(wei)組(zu)合樓(lou)板(ban)(ban)且使用(yong)(yong)(yong)環境(jing)條件較為(wei)惡劣(lie)時，鍍(du)(du)(du)鋅(xin)(xin)層(ceng)(ceng)(ceng)含(han)量(liang)應(ying)選(xuan)用(yong)(yong)(yong)上限值或更(geng)高值。更(geng)高的鍍(du)(du)(du)鋅(xin)(xin)要(yao)(yao)(yao)求，如雙面鍍(du)(du)(du)鋅(xin)(xin)量(liang)為(wei)300g/m2、350g/m2或鍍(du)(du)(du)鋁鋅(xin)(xin)(5%鋁)275g/m2、300g/m2等，較高的鍍(du)(du)(du)層(ceng)(ceng)(ceng)量(liang)使組(zu)合樓(lou)板(ban)(ban)有(you)更(geng)長耐(nai)久性，同(tong)等量(liang)的鍍(du)(du)(du)鋁鋅(xin)(xin)的防銹蝕才能大(da)約(yue)兩倍于一(yi)般熱鍍(du)(du)(du)鋅(xin)(xin)。鍍(du)(du)(du)鋅(xin)(xin)量(liang)也不(bu)是越(yue)厚越(yue)好，當鍍(du)(du)(du)鋅(xin)(xin)量(liang)較厚時，抗剪連接件栓釘的焊接質量(liang)就很(hen)難保證，焊接時，宜選(xuan)用(yong)(yong)(yong)局部除鋅(xin)(xin)處(chu)理措施。

熱(re)(re)(re)鍍(du)鋅(xin)生產(chan)發(fa)(fa)展(zhan)(zhan)一直處于(yu)滯后狀態。20世(shi)(shi)紀(ji)(ji)(ji)50年代(dai)(dai)到60年代(dai)(dai)陸續建成了13條單(dan)張鋼(gang)板熔劑(ji)法熱(re)(re)(re)鍍(du)鋅(xin)機(ji)組，能力為10萬t/a，但因產(chan)量低、成本(ben)高、質量差、污染環境、經(jing)濟效益(yi)差等(deng)缺(que)(que)陷已先后停、轉產(chan)。從(cong)20世(shi)(shi)紀(ji)(ji)(ji)70年代(dai)(dai)末，我(wo)國(guo)才(cai)開始建造(zao)大(da)型(xing)寬帶(dai)熱(re)(re)(re)鍍(du)鋅(xin)機(ji)組。熱(re)(re)(re)鍍(du)鋅(xin)帶(dai)鋼(gang)在我(wo)國(guo)市場一直是緊(jin)缺(que)(que)品種(zhong)。從(cong)20世(shi)(shi)紀(ji)(ji)(ji)90年代(dai)(dai)中期以來，每(mei)年都(dou)要從(cong)國(guo)外進口(kou)80-100萬t左(zuo)右。隨著(zhu)國(guo)內經(jing)濟的發(fa)(fa)展(zhan)(zhan)，尤(you)其是汽車(che)、家(jia)電及建筑(zhu)業(ye)的發(fa)(fa)展(zhan)(zhan)，對鍍(du)鋅(xin)帶(dai)鋼(gang)的需求量也大(da)大(da)增加。

鍍鋁鋅板廠家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。遼寧攀鋼鍍鋁鋅板這種(zhong)鋼板(ban)(ban)也是用(yong)熱(re)浸(jin)法制(zhi)造(zao)，但在出槽后(hou)，立即把它(ta)加熱(re)到500 ℃左(zuo)右，使其生成(cheng)鋅(xin)(xin)和鐵的合(he)金被膜。這種(zhong)鍍(du)鋅(xin)(xin)板(ban)(ban)具(ju)有(you)良好(hao)的涂(tu)料的密著(zhu)性和焊(han)(han)接性;電鍍(du)鋅(xin)(xin)鋼板(ban)(ban)。用(yong)電鍍(du)法制(zhi)造(zao)這種(zhong)鍍(du)鋅(xin)(xin)鋼板(ban)(ban)具(ju)有(you)良好(hao)的加工(gong)性。但鍍(du)層較薄，耐腐蝕性不如熱(re)浸(jin)法鍍(du)鋅(xin)(xin)板(ban)(ban);單(dan)面(mian)鍍(du)和雙面(mian)差鍍(du)鋅(xin)(xin)鋼板(ban)(ban)。單(dan)面(mian)鍍(du)鋅(xin)(xin)鋼板(ban)(ban)，即只在一面(mian)鍍(du)鋅(xin)(xin)的產品(pin)。在焊(han)(han)接、涂(tu)裝、防銹處(chu)理、加工(gong)等方面(mian)，具(ju)有(you)比(bi)雙面(mian)鍍(du)鋅(xin)(xin)板(ban)(ban)好(hao)的適(shi)應性。

堆積(ji)(ji)樓承(cheng)(cheng)(cheng)板(ban)(ban)(ban)的地坪(ping)應(ying)基本平坦，鋼筋桁(heng)架樓承(cheng)(cheng)(cheng)板(ban)(ban)(ban)堆積(ji)(ji)不(bu)(bu)(bu)宜過(guo)高(gao)，每堆不(bu)(bu)(bu)超越60張。樓承(cheng)(cheng)(cheng)板(ban)(ban)(ban)運至現場，需(xu)妥善保(bao)護，不(bu)(bu)(bu)得有任(ren)何損壞和污(wu)染，特別不(bu)(bu)(bu)得感染油污(wu)。樓承(cheng)(cheng)(cheng)板(ban)(ban)(ban)應(ying)根據排(pai)版(ban)圖預先切開(kai)、編號。起(qi)吊(diao)前，每捆要有兩條(tiao)鋼絲繩，分(fen)別捆于兩頭(tou)四(si)分(fen)之(zhi)一(yi)鋼板(ban)(ban)(ban)長度處，采用專用吊(diao)具(ju)吊(diao)起(qi)。應(ying)先行試吊(diao)，檢(jian)查重心是否穩定，鋼索(suo)是否會(hui)滑動，待牢(lao)靠，無慮時(shi)方可吊(diao)起(qi)。起(qi)吊(diao)時(shi)，應(ying)從(cong)下往上樓層(ceng)(ceng)次序吊(diao)料為原則(ze)，避(bi)免因先行吊(diao)放上層(ceng)(ceng)資料后，阻(zu)止下面樓層(ceng)(ceng)的吊(diao)放作業(ye)。整疊樓承(cheng)(cheng)(cheng)板(ban)(ban)(ban)放梁(liang)面時(shi)，應(ying)考慮梁(liang)的承(cheng)(cheng)(cheng)載(zai)(zai)能(neng)力，避(bi)免因集中載(zai)(zai)荷過(guo)大，造成梁(liang)的變形。樓承(cheng)(cheng)(cheng)板(ban)(ban)(ban)吊(diao)至樓層(ceng)(ceng)，暫(zan)時(shi)不(bu)(bu)(bu)鋪設時(shi)，應(ying)作牢(lao)靠固定，避(bi)免飛(fei)落和滑落傷人。

鍍(du)(du)(du)鋅(xin)(xin)帶(dai)(dai)鋼(gang)的(de)(de)鋅(xin)(xin)層(ceng)特(te)性 電鍍(du)(du)(du)鋅(xin)(xin)層(ceng)是(shi)不(bu)能(neng)形(xing)成(cheng)鋅(xin)(xin)花的(de)(de)，熱鍍(du)(du)(du)鋅(xin)(xin)層(ceng)則有(you)鋅(xin)(xin)花，其(qi)形(xing)成(cheng)過程如下：當鍍(du)(du)(du)鋅(xin)(xin)帶(dai)(dai)從(cong)鋅(xin)(xin)鍋出來后(hou)，經(jing)氣刀的(de)(de)噴(pen)吹(chui)，大量鋅(xin)(xin)液被吹(chui)回鋅(xin)(xin)鍋，這時帶(dai)(dai)鋼(gang)表(biao)面還(huan)有(you)純鋅(xin)(xin)層(ceng)，呈液 態附在鋼(gang)板(ban)表(biao)面，在鋼(gang)板(ban)表(biao)面形(xing)成(cheng)大量結(jie)晶(jing)核(he)，隨著鋼(gang)板(ban)上(shang)升冷卻，使(shi)結(jie)晶(jing)核(he)慢慢長成(cheng)鋅(xin)(xin)花。冷卻速度(du)越(yue)(yue)快鋅(xin)(xin)花越(yue)(yue)小，冷卻速度(du)越(yue)(yue)慢鋅(xin)(xin)花越(yue)(yue)大。熱鍍(du)(du)(du)鋅(xin)(xin)帶(dai)(dai)鋼(gang)在我(wo)國(guo)市場一直是(shi)緊缺品(pin)種。從(cong)20世紀90年代中期(qi)以(yi)來，每(mei)年都要從(cong)國(guo)外進口(kou)80-100萬t左(zuo)右。隨著國(guo)內經(jing)濟的(de)(de)發展，尤其(qi)是(shi)汽車、家電及建筑(zhu)業的(de)(de)發展，對鍍(du)(du)(du)鋅(xin)(xin)帶(dai)(dai)鋼(gang)的(de)(de)需(xu)求量也大大增加。