熱鍍鋅批發鍍鋅帶鋼的鋅層特性 電鍍鋅層是不能形成鋅花的，熱鍍鋅層則有鋅花，其形成過程如下：當鍍鋅帶從鋅鍋出來后，經氣刀的噴吹，大量鋅液被吹回鋅鍋，這時帶鋼表面還有純鋅層，呈液 態附在鋼板表面，在鋼板表面形成大量結晶核，隨著鋼板上升冷卻，使結晶核慢慢長成鋅花。上海酒鋼熱鍍鋅冷(leng)卻(que)速度越(yue)快鋅(xin)花(hua)越(yue)小(xiao)，冷(leng)卻(que)速度越(yue)慢鋅(xin)花(hua)越(yue)大(da)。熱鍍鋅(xin)帶鋼在我國(guo)市場(chang)一直(zhi)是(shi)(shi)緊缺品種。從20世紀90年代中期以來，每年都要從國(guo)外進口80-100萬t左右。隨著國(guo)內經濟(ji)的發展，尤其是(shi)(shi)汽車、家電及建筑業的發展，對鍍鋅(xin)帶鋼的需求量也大(da)大(da)增加。

樓(lou)承(cheng)板(ban)(ban)(ban)鋼(gang)(gang)(gang)(gang)筋(jin)桁架(jia)(jia)是(shi)將(jiang)樓(lou)板(ban)(ban)(ban)中(zhong)的(de)(de)(de)(de)(de)(de)鋼(gang)(gang)(gang)(gang)筋(jin)在(zai)(zai)工(gong)廠(chang)采用(yong)進口設備加(jia)工(gong)成(cheng)鋼(gang)(gang)(gang)(gang)筋(jin)桁架(jia)(jia)，并將(jiang)鋼(gang)(gang)(gang)(gang)筋(jin)桁架(jia)(jia)與鍍鋅鋼(gang)(gang)(gang)(gang)板(ban)(ban)(ban)在(zai)(zai)工(gong)廠(chang)焊接(jie)成(cheng)一體的(de)(de)(de)(de)(de)(de)組合模(mo)板(ban)(ban)(ban)，使(shi)其(qi)在(zai)(zai)施工(gong)階段可(ke)作為(wei)(wei)鋼(gang)(gang)(gang)(gang)梁的(de)(de)(de)(de)(de)(de)側(ce)向(xiang)支(zhi)撐(cheng)使(shi)用(yong)！樓(lou)板(ban)(ban)(ban)連(lian)接(jie)采用(yong)扣合方式，板(ban)(ban)(ban)與板(ban)(ban)(ban)之間(jian)的(de)(de)(de)(de)(de)(de)拉鉤連(lian)接(jie)應緊密，保證澆(jiao)筑混凝土時不漏漿(jiang)，同(tong)(tong)時注(zhu)意排板(ban)(ban)(ban)方向(xiang)要(yao)一致，桁架(jia)(jia)節點間(jian)距(ju)為(wei)(wei)200㎜，注(zhu)意不同(tong)(tong)模(mo)板(ban)(ban)(ban)的(de)(de)(de)(de)(de)(de)橫向(xiang)節點要(yao)對(dui)齊。我(wo)們仔細觀(guan)察的(de)(de)(de)(de)(de)(de)話會(hui)(hui)發現(xian)很(hen)多(duo)高(gao)層建(jian)筑上(shang)都會(hui)(hui)設置鋼(gang)(gang)(gang)(gang)筋(jin)桁架(jia)(jia)樓(lou)承(cheng)板(ban)(ban)(ban)，我(wo)們雖(sui)然經常用(yong)到該樓(lou)承(cheng)板(ban)(ban)(ban)，但(dan)很(hen)少(shao)有人知道(dao)這種板(ban)(ban)(ban)材為(wei)(wei)什么會(hui)(hui)用(yong)于高(gao)層建(jian)筑中(zhong)。下(xia)面(mian)小編將(jiang)為(wei)(wei)您介紹一下(xia)該板(ban)(ban)(ban)材在(zai)(zai)高(gao)層建(jian)筑中(zhong)的(de)(de)(de)(de)(de)(de)使(shi)用(yong)優勢！鋼(gang)(gang)(gang)(gang)筋(jin)樓(lou)承(cheng)板(ban)(ban)(ban)的(de)(de)(de)(de)(de)(de)搭接(jie)是(shi)有著嚴格的(de)(de)(de)(de)(de)(de)施工(gong)要(yao)求的(de)(de)(de)(de)(de)(de)，為(wei)(wei)保障樓(lou)承(cheng)板(ban)(ban)(ban)安裝牢固，該板(ban)(ban)(ban)材的(de)(de)(de)(de)(de)(de)搭接(jie)需要(yao)按照說明書正確進行，搭接(jie)過(guo)程中(zhong)還(huan)需要(yao)注(zhu)意，沿順肋(lei)方向(xiang)，壓型(xing)鋼(gang)(gang)(gang)(gang)板(ban)(ban)(ban)如果可(ke)以滿(man)足正截面(mian)承(cheng)載(zai)力及剪(jian)切粘(zhan)結承(cheng)載(zai)力的(de)(de)(de)(de)(de)(de)要(yao)求，可(ke)以不用(yong)配順肋(lei)方向(xiang)的(de)(de)(de)(de)(de)(de)鋼(gang)(gang)(gang)(gang)筋(jin)，這時候要(yao)注(zhu)意計算(suan)剪(jian)切粘(zhan)結承(cheng)載(zai)力。

鍍(du)(du)(du)(du)(du)鋅(xin)(xin)是(shi)一(yi)種(zhong)經(jing)常采(cai)用(yong)的(de)經(jing)濟而有效(xiao)的(de)防腐方法(fa)。鋅(xin)(xin)產量的(de)一(yi)半左右均用(yong)于此種(zhong)工(gong)藝。鍍(du)(du)(du)(du)(du)鋅(xin)(xin)卷(juan)是(shi)為(wei)防止鋼(gang)板(ban)表(biao)面遭(zao)受腐蝕延長(chang)其(qi)使用(yong)壽(shou)命，在鋼(gang)板(ban)表(biao)面涂(tu)以一(yi)層金屬鋅(xin)(xin)，這種(zhong)涂(tu)鋅(xin)(xin)的(de)鋼(gang)板(ban)稱為(wei)鍍(du)(du)(du)(du)(du)鋅(xin)(xin)卷(juan)。鍍(du)(du)(du)(du)(du)鋅(xin)(xin)卷(juan)主要用(yong)于建(jian)筑(zhu)、家(jia)電、汽車(che)、容器、交通及家(jia)業(ye)等(deng)領域。特別(bie)是(shi)鋼(gang)結構建(jian)筑(zhu)、汽車(che)制(zhi)造(zao)、鋼(gang)板(ban)倉制(zhi)造(zao)等(deng)行業(ye)。耐腐蝕強、表(biao)面質量好、得利于深加(jia)工(gong)、經(jing)濟實用(yong)等(deng)。有關產品標準都列(lie)明(ming)鍍(du)(du)(du)(du)(du)鋅(xin)(xin)卷(juan)推(tui)薦的(de)標準厚(hou)度(du)(du)(du)、長(chang)度(du)(du)(du)和寬度(du)(du)(du)及其(qi)允許偏(pian)差(cha)。鍍(du)(du)(du)(du)(du)鋅(xin)(xin)卷(juan)厚(hou)度(du)(du)(du)偏(pian)差(cha)一(yi)般(ban)在0.05mm，長(chang)寬偏(pian)差(cha)一(yi)般(ban)在5mm ，板(ban)材的(de)厚(hou)度(du)(du)(du)一(yi)般(ban)在0.2-3.2之間(jian) 。

樓(lou)(lou)承(cheng)板(ban)(ban)(ban)適應(ying)主體鋼(gang)結(jie)構快(kuai)速(su)施工(gong)(gong)的(de)要求(qiu)，能(neng)(neng)夠(gou)在(zai)短(duan)時間(jian)內提供(gong)堅定的(de)作業(ye)平臺，并可采用多個(ge)樓(lou)(lou)層(ceng)(ceng)鋪設壓(ya)型鋼(gang)板(ban)(ban)(ban)，分(fen)層(ceng)(ceng)澆筑混(hun)凝(ning)土(tu)板(ban)(ban)(ban)的(de)流水施工(gong)(gong)。在(zai)使(shi)(shi)用階段(duan)樓(lou)(lou)承(cheng)板(ban)(ban)(ban)作為(wei)混(hun)凝(ning)土(tu)樓(lou)(lou)板(ban)(ban)(ban)的(de)受拉(la)鋼(gang)筋(jin)，也(ye)提高了(le)樓(lou)(lou)板(ban)(ban)(ban)的(de)剛度(du)(du)，節省(sheng)了(le)鋼(gang)筋(jin)和混(hun)凝(ning)土(tu)的(de)用量。樓(lou)(lou)承(cheng)板(ban)(ban)(ban)上面(mian)(mian)可以鋪設保溫，隔音，隔熱，隔振等材料。樓(lou)(lou)面(mian)(mian)性(xing)能(neng)(neng)充分(fen)發揮(hui)鋼(gang)的(de)良好的(de)抗(kang)拉(la)強度(du)(du)和延性(xing)及混(hun)凝(ning)土(tu)優良的(de)抗(kang)壓(ya)強度(du)(du)和較(jiao)大(da)的(de)剛度(du)(du)。壓(ya)型板(ban)(ban)(ban)表面(mian)(mian)壓(ya)紋(wen)使(shi)(shi)樓(lou)(lou)承(cheng)板(ban)(ban)(ban)與混(hun)凝(ning)土(tu)之間(jian)產(chan)生大(da)的(de)結(jie)合力，使(shi)(shi)二者形成(cheng)整體，配以加勁肋(lei)，使(shi)(shi)樓(lou)(lou)承(cheng)板(ban)(ban)(ban)系統具有高強承(cheng)載力。在(zai)懸(xuan)臂(bei)條件下，樓(lou)(lou)承(cheng)板(ban)(ban)(ban)僅作為(wei)性(xing)模(mo)板(ban)(ban)(ban)。懸(xuan)挑的(de)長(chang)度(du)(du)可根據樓(lou)(lou)承(cheng)板(ban)(ban)(ban)的(de)截面(mian)(mian)特性(xing)來(lai)定。為(wei)了(le)防止懸(xuan)挑板(ban)(ban)(ban)的(de)開裂，需(xu)在(zai)支座處依結(jie)構工(gong)(gong)程師的(de)設計(ji)配上負筋(jin)。