熱(re)(re)浸(jin)鍍(du)(du)(du)(du)鋅(xin)鋼(gang)(gang)板(ban)將薄鋼(gang)(gang)板(ban)浸(jin)入熔解的鋅(xin)槽(cao)中，使其表面(mian)粘附一(yi)層(ceng)鋅(xin)的薄鋼(gang)(gang)板(ban)。目前主(zhu)要采用連(lian)續鍍(du)(du)(du)(du)鋅(xin)工(gong)藝生(sheng)產(chan)，即(ji)把成(cheng)(cheng)卷的鋼(gang)(gang)板(ban)連(lian)續浸(jin)在熔解有鋅(xin)的鍍(du)(du)(du)(du)槽(cao)中制(zhi)成(cheng)(cheng)鍍(du)(du)(du)(du)鋅(xin)鋼(gang)(gang)板(ban);合金化鍍(du)(du)(du)(du)鋅(xin)鋼(gang)(gang)板(ban)。這種(zhong)鋼(gang)(gang)板(ban)也(ye)是(shi)用熱(re)(re)浸(jin)法制(zhi)造，但在出(chu)槽(cao)后(hou)，立即(ji)把它加熱(re)(re)到500 ℃左(zuo)右，使其生(sheng)成(cheng)(cheng)鋅(xin)和鐵的合金被膜。這種(zhong)鍍(du)(du)(du)(du)鋅(xin)板(ban)具有良(liang)好(hao)的涂料的密著性(xing)(xing)和焊接(jie)性(xing)(xing);電(dian)鍍(du)(du)(du)(du)鋅(xin)鋼(gang)(gang)板(ban)。用電(dian)鍍(du)(du)(du)(du)法制(zhi)造這種(zhong)鍍(du)(du)(du)(du)鋅(xin)鋼(gang)(gang)板(ban)具有良(liang)好(hao)的加工(gong)性(xing)(xing)。但鍍(du)(du)(du)(du)層(ceng)較薄，耐(nai)腐蝕性(xing)(xing)不如熱(re)(re)浸(jin)法鍍(du)(du)(du)(du)鋅(xin)板(ban);單(dan)面(mian)鍍(du)(du)(du)(du)和雙面(mian)差鍍(du)(du)(du)(du)鋅(xin)鋼(gang)(gang)板(ban)。單(dan)面(mian)鍍(du)(du)(du)(du)鋅(xin)鋼(gang)(gang)板(ban)，即(ji)只在一(yi)面(mian)鍍(du)(du)(du)(du)鋅(xin)的產(chan)品。在焊接(jie)、涂裝、防銹(xiu)處理(li)、加工(gong)等(deng)方面(mian)，具有比雙面(mian)鍍(du)(du)(du)(du)鋅(xin)板(ban)好(hao)的適應性(xing)(xing)。

鍍(du)鋅(xin)(xin)(xin)帶(dai)鋼(gang)(gang)的(de)鋅(xin)(xin)(xin)層特性 電鍍(du)鋅(xin)(xin)(xin)層是(shi)不能形成鋅(xin)(xin)(xin)花(hua)的(de)，熱鍍(du)鋅(xin)(xin)(xin)層則有鋅(xin)(xin)(xin)花(hua)，其形成過程如下：當鍍(du)鋅(xin)(xin)(xin)帶(dai)從(cong)鋅(xin)(xin)(xin)鍋(guo)(guo)出來后，經氣刀的(de)噴(pen)吹，大(da)量(liang)(liang)鋅(xin)(xin)(xin)液(ye)被吹回鋅(xin)(xin)(xin)鍋(guo)(guo)，這時帶(dai)鋼(gang)(gang)表(biao)面(mian)還有純鋅(xin)(xin)(xin)層，呈液(ye) 態附(fu)在鋼(gang)(gang)板(ban)表(biao)面(mian)，在鋼(gang)(gang)板(ban)表(biao)面(mian)形成大(da)量(liang)(liang)結晶核，隨著(zhu)鋼(gang)(gang)板(ban)上升冷卻，使(shi)結晶核慢(man)慢(man)長成鋅(xin)(xin)(xin)花(hua)。冷卻速度(du)越快鋅(xin)(xin)(xin)花(hua)越小，冷卻速度(du)越慢(man)鋅(xin)(xin)(xin)花(hua)越大(da)。熱鍍(du)鋅(xin)(xin)(xin)帶(dai)鋼(gang)(gang)在我國市場(chang)一(yi)直是(shi)緊缺品種。從(cong)20世紀(ji)90年代中期以來，每年都要從(cong)國外進口80-100萬(wan)t左右。隨著(zhu)國內(nei)經濟的(de)發展，尤其是(shi)汽車、家電及(ji)建筑業的(de)發展，對(dui)鍍(du)鋅(xin)(xin)(xin)帶(dai)鋼(gang)(gang)的(de)需求量(liang)(liang)也(ye)大(da)大(da)增加。

綿竹鍍鋅鋼板重慶樓承板分兩種。一種是把樓承板當做承受拉力的鋼筋計算的，另外一種是僅把樓承板作為模板計算而不參與受力的。做模板計算的比較簡單，直接按照跨度頂就行了。2米以下選0.8的，2-3米的選1.0的。鍍鋅鋼板批發樓承(cheng)板作為受(shou)力鋼(gang)筋計算(suan)，就按照模板的選(xuan)用樓承(cheng)板（或者加(jia)厚且(qie)只能加(jia)厚），然后(hou)在計算(suan)配筋的時候可以按照面積減少鋼(gang)筋用量。樓承(cheng)板不能單獨計算(suan)的，它和整(zheng)個樓板是一個體系的。

首(shou)先，在鋼結構樓(lou)層(ceng)板(ban)(ban)(ban)(ban)(ban)(ban)中要(yao)達(da)到耐火1.5小時，總的來說可以選擇開口板(ban)(ban)(ban)(ban)(ban)(ban)、縮口板(ban)(ban)(ban)(ban)(ban)(ban)、閉口板(ban)(ban)(ban)(ban)(ban)(ban)三(san)大(da)類。規(gui)范上混凝土(tu)要(yao)高于(yu)(yu)(yu)開口板(ban)(ban)(ban)(ban)(ban)(ban)肋頂之(zhi)上80mm，并且板(ban)(ban)(ban)(ban)(ban)(ban)底(di)需(xu)(xu)配置板(ban)(ban)(ban)(ban)(ban)(ban)底(di)受(shou)(shou)力筋。還有一種就是(shi)(shi)再開口板(ban)(ban)(ban)(ban)(ban)(ban)底(di)部(bu)刷防火涂料，涂料厚度大(da)于(yu)(yu)(yu)等于(yu)(yu)(yu)15,這樣(yang)的話(hua)，只(zhi)要(yao)達(da)到構造(zao)要(yao)求(qiu)高于(yu)(yu)(yu)肋頂5公分(fen)就可以了(le)。而縮口板(ban)(ban)(ban)(ban)(ban)(ban)和閉口板(ban)(ban)(ban)(ban)(ban)(ban)，只(zhi)需(xu)(xu)要(yao)總的樓(lou)板(ban)(ban)(ban)(ban)(ban)(ban)厚度大(da)于(yu)(yu)(yu)等于(yu)(yu)(yu)110即可，但是(shi)(shi)縮口板(ban)(ban)(ban)(ban)(ban)(ban)雖然在防火方面比開口板(ban)(ban)(ban)(ban)(ban)(ban)要(yao)好。但是(shi)(shi)底(di)部(bu)還是(shi)(shi)需(xu)(xu)要(yao)加板(ban)(ban)(ban)(ban)(ban)(ban)底(di)受(shou)(shou)力筋，而閉口板(ban)(ban)(ban)(ban)(ban)(ban)則不需(xu)(xu)要(yao)。