鍍(du)(du)鋅(xin)鋼(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)(ban)是為(wei)(wei)防止(zhi)鋼(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)(ban)表(biao)面(mian)(mian)遭(zao)受腐蝕，延長(chang)其(qi)使(shi)用壽命，在鋼(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)(ban)表(biao)面(mian)(mian)涂以一(yi)(yi)層金(jin)屬鋅(xin)，這(zhe)種涂鋅(xin)的(de)薄(bo)鋼(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)(ban)稱為(wei)(wei)鍍(du)(du)鋅(xin)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)(ban)。按生(sheng)產及加工(gong)方法可分為(wei)(wei)以下幾類(lei)：熱浸鍍(du)(du)鋅(xin)鋼(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)(ban)。將薄(bo)鋼(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)(ban)浸入(ru)熔 微商貨源(yuan)解的(de)鋅(xin)槽(cao)(cao)中(zhong)，使(shi)其(qi)表(biao)面(mian)(mian)粘附(fu)一(yi)(yi)層鋅(xin)的(de)薄(bo)鋼(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)(ban)。目前(qian)主要采用連續鍍(du)(du)鋅(xin)工(gong)藝生(sheng)產，即(ji)(ji)把成(cheng)卷的(de)鋼(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)(ban)連續浸在熔解有鋅(xin)的(de)鍍(du)(du)槽(cao)(cao)中(zhong)制(zhi)(zhi)成(cheng)鍍(du)(du)鋅(xin)鋼(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)(ban)；合金(jin)化(hua)鍍(du)(du)鋅(xin)鋼(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)(ban)。這(zhe)種鋼(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)(ban)也是用熱浸法制(zhi)(zhi)造，但(dan)在出槽(cao)(cao)后，立即(ji)(ji)把它加熱到５００℃左右，使(shi)其(qi)生(sheng)成(cheng)鋅(xin)和鐵的(de)合金(jin)被膜。這(zhe)種鍍(du)(du)鋅(xin)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)(ban)具有良好的(de)涂料的(de)密著(zhu)性(xing)和焊接(jie)性(xing)。

鍍鋅(xin)(xin)(xin)帶鋼(gang)的鋅(xin)(xin)(xin)層(ceng)(ceng)特性 電(dian)鍍鋅(xin)(xin)(xin)層(ceng)(ceng)是(shi)不能形成鋅(xin)(xin)(xin)花(hua)的，熱鍍鋅(xin)(xin)(xin)層(ceng)(ceng)則(ze)有(you)鋅(xin)(xin)(xin)花(hua)，其形成過程如(ru)下：當鍍鋅(xin)(xin)(xin)帶從鋅(xin)(xin)(xin)鍋出(chu)來(lai)后，經氣刀(dao)的噴吹，大(da)量(liang)鋅(xin)(xin)(xin)液被吹回鋅(xin)(xin)(xin)鍋，這時帶鋼(gang)表面(mian)還有(you)純(chun)鋅(xin)(xin)(xin)層(ceng)(ceng)，呈液 態附在(zai)(zai)鋼(gang)板(ban)表面(mian)，在(zai)(zai)鋼(gang)板(ban)表面(mian)形成大(da)量(liang)結晶核，隨著(zhu)鋼(gang)板(ban)上升冷(leng)卻，使結晶核慢慢長成鋅(xin)(xin)(xin)花(hua)。冷(leng)卻速度越(yue)快鋅(xin)(xin)(xin)花(hua)越(yue)小(xiao)，冷(leng)卻速度越(yue)慢鋅(xin)(xin)(xin)花(hua)越(yue)大(da)。熱鍍鋅(xin)(xin)(xin)帶鋼(gang)在(zai)(zai)我國(guo)市場一直是(shi)緊缺品種。從20世紀(ji)90年代中期以來(lai)，每(mei)年都要從國(guo)外進口(kou)80-100萬(wan)t左右(you)。隨著(zhu)國(guo)內經濟的發展(zhan)，尤其是(shi)汽(qi)車、家電(dian)及建筑業的發展(zhan)，對鍍鋅(xin)(xin)(xin)帶鋼(gang)的需求量(liang)也(ye)大(da)大(da)增加(jia)。

熱(re)浸(jin)鍍(du)(du)(du)(du)(du)(du)鋅(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)將薄鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)浸(jin)入熔(rong)解的(de)(de)(de)鋅(xin)(xin)(xin)槽(cao)中，使其表面(mian)(mian)粘(zhan)附(fu)一(yi)層鋅(xin)(xin)(xin)的(de)(de)(de)薄鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)。目前主要采(cai)用(yong)連(lian)續鍍(du)(du)(du)(du)(du)(du)鋅(xin)(xin)(xin)工藝生(sheng)產，即(ji)把成(cheng)卷的(de)(de)(de)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)連(lian)續浸(jin)在熔(rong)解有(you)鋅(xin)(xin)(xin)的(de)(de)(de)鍍(du)(du)(du)(du)(du)(du)槽(cao)中制(zhi)成(cheng)鍍(du)(du)(du)(du)(du)(du)鋅(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban);合金化鍍(du)(du)(du)(du)(du)(du)鋅(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)。這(zhe)種(zhong)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)也是用(yong)熱(re)浸(jin)法(fa)制(zhi)造，但在出槽(cao)后，立即(ji)把它(ta)加(jia)熱(re)到500 ℃左右(you)，使其生(sheng)成(cheng)鋅(xin)(xin)(xin)和(he)鐵(tie)的(de)(de)(de)合金被膜。這(zhe)種(zhong)鍍(du)(du)(du)(du)(du)(du)鋅(xin)(xin)(xin)板(ban)(ban)(ban)(ban)(ban)具有(you)良好的(de)(de)(de)涂料(liao)的(de)(de)(de)密著性(xing)和(he)焊接性(xing);電(dian)(dian)鍍(du)(du)(du)(du)(du)(du)鋅(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)。用(yong)電(dian)(dian)鍍(du)(du)(du)(du)(du)(du)法(fa)制(zhi)造這(zhe)種(zhong)鍍(du)(du)(du)(du)(du)(du)鋅(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)具有(you)良好的(de)(de)(de)加(jia)工性(xing)。但鍍(du)(du)(du)(du)(du)(du)層較薄，耐腐蝕(shi)性(xing)不如(ru)熱(re)浸(jin)法(fa)鍍(du)(du)(du)(du)(du)(du)鋅(xin)(xin)(xin)板(ban)(ban)(ban)(ban)(ban);單(dan)(dan)面(mian)(mian)鍍(du)(du)(du)(du)(du)(du)和(he)雙面(mian)(mian)差鍍(du)(du)(du)(du)(du)(du)鋅(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)。單(dan)(dan)面(mian)(mian)鍍(du)(du)(du)(du)(du)(du)鋅(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)，即(ji)只在一(yi)面(mian)(mian)鍍(du)(du)(du)(du)(du)(du)鋅(xin)(xin)(xin)的(de)(de)(de)產品。在焊接、涂裝、防銹處理、加(jia)工等方(fang)面(mian)(mian)，具有(you)比雙面(mian)(mian)鍍(du)(du)(du)(du)(du)(du)鋅(xin)(xin)(xin)板(ban)(ban)(ban)(ban)(ban)好的(de)(de)(de)適應性(xing)。

熱(re)鍍(du)(du)鋅(xin)板和電鍍(du)(du)鋅(xin)板在鍍(du)(du)鋅(xin)量上(shang)有很(hen)大(da)的(de)差別(bie)，就像山東(dong)彩涂卷）。熱(re)鍍(du)(du)鋅(xin)的(de)鍍(du)(du)鋅(xin)量不可(ke)能太(tai)小(xiao)，一(yi)(yi)般(ban)較(jiao)(jiao)小(xiao)為(wei)雙(shuang)面50～60g／m2，較(jiao)(jiao)大(da)可(ke)達(da)600g／m2。電鍍(du)(du)鋅(xin)板的(de)鍍(du)(du)鋅(xin)層可(ke)以(yi)很(hen)薄，較(jiao)(jiao)小(xiao)達(da)15g／m2，但要求鍍(du)(du)層較(jiao)(jiao)厚的(de)話則(ze)生產線速度很(hen)慢，不適(shi)應現代化機組的(de)工藝特點，一(yi)(yi)般(ban)較(jiao)(jiao)大(da)為(wei)lO0g／m2左右。正(zheng)因(yin)為(wei)如此，電鍍(du)(du)鋅(xin)板的(de)生產受到很(hen)大(da)的(de)限(xian)制。工一(yi)(yi)般(ban)電鍍(du)(du)鋅(xin)比(bi)較(jiao)(jiao)多，適(shi)用于小(xiao)部(bu)件(jian)；熱(re)鍍(du)(du)鋅(xin)一(yi)(yi)般(ban)用于電力設備和構件(jian)，適(shi)用于大(da)的(de)部(bu)件(jian)和設備。當然他們的(de)價格也相對便(bian)宜(yi)一(yi)(yi)些。建設部(bu)已(yi)正(zheng)式(shi)下文，淘汰技(ji)術落(luo)后的(de)冷(leng)鍍(du)(du)鋅(xin)管(guan)，不準(zhun)用冷(leng)鍍(du)(du)鋅(xin)管(guan)作(zuo)水、煤(mei)氣管(guan)。

熱鍍鋅價格樓承板的使用是需要安裝的，那么如果要安裝就要選擇合適的小配件，焊后栓釘高度大于壓型鋼板波高30MM(留意挑選樓板的類型);栓釘頂面混凝土保護層不小于15MM(留意樓板總厚度)直徑不宜大于19MM。大理攀鋼熱鍍鋅樓(lou)承板(ban)栓(shuan)(shuan)釘(ding)類型有ф8、ф10、ф13、ф16、ф19、ф22、ф25，栓(shuan)(shuan)釘(ding)一般(ban)在鋼(gang)結(jie)構修建(jian)中(zhong)(zhong),遍及使用(yong)在柱腳和樓(lou)板(ban)中(zhong)(zhong),一般(ban)剛度(du)(du)要求高的(de)柱腳都(dou)選(xuan)用(yong)鋼(gang)柱內伸至(zhi)混凝(ning)(ning)土(tu)(tu)(tu)中(zhong)(zhong)，鋼(gang)柱埋入混凝(ning)(ning)土(tu)(tu)(tu)的(de)部(bu)位四周(zhou)均布栓(shuan)(shuan)釘(ding)。樓(lou)承板(ban)輕鋼(gang)結(jie)構常用(yong)厚度(du)(du)為0.8mm,1.0mm，1.2mm,荷載較(jiao)大(da)的(de)情況(kuang)下(xia)會用(yong)到1.5mm。一般(ban)需(xu)要用(yong)栓(shuan)(shuan)釘(ding)與鋼(gang)梁銜接(jie)，板(ban)中(zhong)(zhong)配(pei)少量鋼(gang)筋，上面澆混凝(ning)(ning)土(tu)(tu)(tu)層，總厚度(du)(du)約在100-200mm之(zhi)間。

近期(qi)(qi)鋼價(jia)(jia)延續低(di)迷，隨著(zhu)通國規模的酷(ku)暑和旱季(ji)到來(lai)，熱鍍(du)鋅(xin)卷板(ban)價(jia)(jia)格(ge)商(shang)(shang)(shang)場(chang)(chang)(chang)逐漸進入需(xu)要旺季(ji)，海(hai)內鋼鐵商(shang)(shang)(shang)場(chang)(chang)(chang)或(huo)將窄幅(fu)調(diao)整。在(zai)決策層兩手抓制度(du)措施(shi)落實狀況、貨(huo)銀本位(wei)度(du)定向寬松力度(du)加大的直觀(guan)層面利好牽動下(xia)，商(shang)(shang)(shang)場(chang)(chang)(chang)信念逐漸趨(qu)穩(wen)，短期(qi)(qi)海(hai)內鋼價(jia)(jia)無望(wang)止跌企穩(wen);另(ling)一(yi)上面，以后(hou)鋼價(jia)(jia)殺跌電能有余，而上漲(zhang)也仍然屏障重重。熱鍍(du)鋅(xin)卷板(ban)價(jia)(jia)格(ge)價(jia)(jia)錢或(huo)將長期(qi)(qi)在(zai)于低(di)位(wei)運行場(chang)(chang)(chang)面。