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鍍(du)鋅(xin)(xin)鋼(gang)(gang)(gang)(gang)板(ban)(ban)為基(ji)板(ban)(ban)的(de)(de)彩涂(tu)(tu)鋼(gang)(gang)(gang)(gang)板(ban)(ban),除有(you)鋅(xin)(xin)保護(hu)外,鋅(xin)(xin)層(ceng)(ceng)(ceng)(ceng)上的(de)(de)有(you)機(ji)涂(tu)(tu)層(ceng)(ceng)(ceng)(ceng)起(qi)了覆(fu)蓋隔離作用,可防(fang)止鋼(gang)(gang)(gang)(gang)板(ban)(ban)生(sheng)銹,使(shi)(shi)用壽命比(bi)鍍(du)鋅(xin)(xin)鋼(gang)(gang)(gang)(gang)板(ban)(ban)更長(chang),據(ju)介(jie)紹(shao)涂(tu)(tu)層(ceng)(ceng)(ceng)(ceng)鋼(gang)(gang)(gang)(gang)板(ban)(ban)的(de)(de)使(shi)(shi)用壽命比(bi)鍍(du)鋅(xin)(xin)鋼(gang)(gang)(gang)(gang)板(ban)(ban)長(chang)50%。在(zai)(zai)連(lian)續機(ji)組上以冷軋帶鋼(gang)(gang)(gang)(gang),鍍(du)鋅(xin)(xin)帶鋼(gang)(gang)(gang)(gang)(電鍍(du)鋅(xin)(xin)和熱鍍(du)鋅(xin)(xin))為基(ji)板(ban)(ban),經(jing)過表(biao)面預(yu)處理(脫(tuo)脂和化學處理),用輥涂(tu)(tu)的(de)(de)方法,涂(tu)(tu)上一層(ceng)(ceng)(ceng)(ceng)或多層(ceng)(ceng)(ceng)(ceng)液態涂(tu)(tu)料,經(jing)過烘烤和冷卻所得的(de)(de)板(ban)(ban)材即為涂(tu)(tu)層(ceng)(ceng)(ceng)(ceng)鋼(gang)(gang)(gang)(gang)板(ban)(ban)。由于涂(tu)(tu)層(ceng)(ceng)(ceng)(ceng)可以有(you)各種不同的(de)(de)顏色(se),習慣(guan)上把涂(tu)(tu)層(ceng)(ceng)(ceng)(ceng)鋼(gang)(gang)(gang)(gang)板(ban)(ban)叫做彩色(se)涂(tu)(tu)層(ceng)(ceng)(ceng)(ceng)鋼(gang)(gang)(gang)(gang)板(ban)(ban)。又由于涂(tu)(tu)層(ceng)(ceng)(ceng)(ceng)是(shi)在(zai)(zai)鋼(gang)(gang)(gang)(gang)板(ban)(ban)成(cheng)型(xing)加工之前進行的(de)(de),在(zai)(zai)國外這叫做預(yu)涂(tu)(tu)層(ceng)(ceng)(ceng)(ceng)鋼(gang)(gang)(gang)(gang)板(ban)(ban)。
樓(lou)承(cheng)板(ban)能夠滿足快速(su)施(shi)工的(de)(de)需求,可(ke)以(yi)(yi)在短(duan)時間內(nei)搭(da)建起牢固的(de)(de)作業平臺,而(er)且(qie)還能把多個(ge)樓(lou)承(cheng)板(ban)層(ceng)鋪設壓型鋼(gang)(gang)板(ban),分層(ceng)澆筑(zhu)混(hun)凝(ning)(ning)土(tu)板(ban)的(de)(de)流水施(shi)工作業。可(ke)以(yi)(yi)作為混(hun)凝(ning)(ning)土(tu)樓(lou)板(ban)的(de)(de)受拉鋼(gang)(gang)筋,可(ke)以(yi)(yi)使(shi)樓(lou)板(ban)的(de)(de)剛度(du)增強,而(er)且(qie)使(shi)得鋼(gang)(gang)筋和混(hun)凝(ning)(ning)土(tu)的(de)(de)用量明(ming)顯減少。壓型板(ban)表面壓紋使(shi)樓(lou)承(cheng)板(ban)與混(hun)凝(ning)(ning)土(tu)之(zhi)間產(chan)生大的(de)(de)結(jie)合(he)力,使(shi)二者(zhe)形成整體,再配(pei)合(he)上加勁(jing)肋,使(shi)得有高(gao)強承(cheng)載(zai)力。還可(ke)以(yi)(yi)作為性模(mo)板(ban),懸挑的(de)(de)長度(du)可(ke)根(gen)據(ju)樓(lou)承(cheng)板(ban)的(de)(de)截面特性來定。為了防(fang)止懸挑板(ban)的(de)(de)開裂,需在支座處依結(jie)構(gou)工程師的(de)(de)設計配(pei)上負筋。而(er)且(qie)都是經過固定滅火(huo)系統及耐火(huo)構(gou)件質量檢測中心的(de)(de)耐火(huo)檢測,具有防(fang)火(huo)的(de)(de)特性。
鍍(du)鋅板(ban)開平(ping)的(de)(de)(de)(de)整(zheng)個生產來說(shuo)(shuo)它(ta)首先(xian)就是要(yao)(yao)(yao)達(da)(da)到(dao)很(hen)(hen)高(gao)(gao)的(de)(de)(de)(de)工(gong)藝(yi),但(dan)是如(ru)(ru)果(guo)要(yao)(yao)(yao)讓(rang)它(ta)在自(zi)己(ji)的(de)(de)(de)(de)工(gong)藝(yi)性(xing)上(shang)面(mian)達(da)(da)到(dao)很(hen)(hen)高(gao)(gao)的(de)(de)(de)(de)表(biao)(biao)現,也(ye)(ye)是要(yao)(yao)(yao)讓(rang)它(ta)達(da)(da)到(dao)很(hen)(hen)高(gao)(gao)的(de)(de)(de)(de)要(yao)(yao)(yao)求(qiu)的(de)(de)(de)(de),那么它(ta)在自(zi)己(ji)工(gong)藝(yi)性(xing)上(shang)面(mian)都是要(yao)(yao)(yao)達(da)(da)到(dao)什么樣(yang)的(de)(de)(de)(de)要(yao)(yao)(yao)求(qiu)呢?首先(xian)一(yi)(yi)個方面(mian),就是它(ta)在自(zi)己(ji)的(de)(de)(de)(de)生產上(shang)面(mian)要(yao)(yao)(yao)讓(rang)自(zi)己(ji)有很(hen)(hen)高(gao)(gao)的(de)(de)(de)(de)技術,如(ru)(ru)果(guo)是一(yi)(yi)個廠家(jia),他(ta)們(men)沒有很(hen)(hen)高(gao)(gao)的(de)(de)(de)(de)技術,那么他(ta)們(men)是不能讓(rang)自(zi)己(ji)的(de)(de)(de)(de)工(gong)藝(yi)性(xing)有很(hen)(hen)好的(de)(de)(de)(de)表(biao)(biao)現的(de)(de)(de)(de)。鍍(du)鋅板(ban)開平(ping)的(de)(de)(de)(de)整(zheng)個設備上(shang)面(mian)也(ye)(ye)是很(hen)(hen)重(zhong)要(yao)(yao)(yao)的(de)(de)(de)(de),現在也(ye)(ye)有一(yi)(yi)些(xie)(xie)廠家(jia),他(ta)們(men)因為自(zi)己(ji)沒有很(hen)(hen)好的(de)(de)(de)(de)實力(li),所以自(zi)然就會(hui)讓(rang)它(ta)在自(zi)己(ji)的(de)(de)(de)(de)設備上(shang)面(mian)的(de)(de)(de)(de)下(xia)降(jiang),如(ru)(ru)果(guo)是一(yi)(yi)些(xie)(xie)大廠家(jia)來說(shuo)(shuo),他(ta)們(men)在自(zi)己(ji)的(de)(de)(de)(de)整(zheng)個工(gong)作中,都是能使用到(dao)電(dian)腦上(shang)面(mian)的(de)(de)(de)(de)控制,但(dan)是對于(yu)有些(xie)(xie)廠家(jia)來說(shuo)(shuo),他(ta)們(men)還在使用一(yi)(yi)些(xie)(xie)落(luo)后的(de)(de)(de)(de)設備,這(zhe)樣(yang)自(zi)然就會(hui)讓(rang)它(ta)在工(gong)藝(yi)性(xing)上(shang)面(mian)下(xia)降(jiang),所以這(zhe)一(yi)(yi)點(dian)也(ye)(ye)是它(ta)在自(zi)己(ji)工(gong)藝(yi)性(xing)上(shang)面(mian)的(de)(de)(de)(de)一(yi)(yi)些(xie)(xie)條件。
廣東鍍鋅角鋼重慶樓承板分兩種。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。鍍鋅角鋼批發樓承板(ban)作為受(shou)力鋼筋(jin)計算(suan),就按照(zhao)模(mo)板(ban)的選用樓承板(ban)(或者(zhe)加(jia)厚且只能加(jia)厚),然后在計算(suan)配筋(jin)的時候可以按照(zhao)面(mian)積減少(shao)鋼筋(jin)用量。樓承板(ban)不能單獨(du)計算(suan)的,它(ta)和整(zheng)個(ge)樓板(ban)是(shi)一個(ge)體(ti)系的。
樓(lou)(lou)承板(ban)鍍(du)(du)鋅(xin)(xin)首要(yao)起到防(fang)腐(fu)的效果,按標準組合(he)樓(lou)(lou)板(ban)與非組合(he)樓(lou)(lou)板(ban)壓(ya)型鋼板(ban)應選(xuan)用(yong)熱(re)鍍(du)(du)鋅(xin)(xin),不該(gai)選(xuan)用(yong)電鍍(du)(du)鋅(xin)(xin)鋼板(ban),其雙(shuang)面鍍(du)(du)鋅(xin)(xin)層總含量要(yao)滿(man)足在使(shi)用(yong)期(qi)間(jian)不致銹(xiu)損(sun)的要(yao)求(qiu)。當(dang)作(zuo)為非組合(he)樓(lou)(lou)承板(ban)時,鍍(du)(du)鋅(xin)(xin)層含量可選(xuan)用(yong)較低值(zhi);當(dang)為組合(he)樓(lou)(lou)承板(ban)時,鍍(du)(du)鋅(xin)(xin)層含量不該(gai)小于(yu)150g/m2。當(dang)為組合(he)樓(lou)(lou)板(ban)且使(shi)用(yong)環境條(tiao)件(jian)較為惡劣時,鍍(du)(du)鋅(xin)(xin)層含量應選(xuan)用(yong)上(shang)限(xian)值(zhi)或更(geng)(geng)高值(zhi)。更(geng)(geng)高的鍍(du)(du)鋅(xin)(xin)要(yao)求(qiu),如雙(shuang)面鍍(du)(du)鋅(xin)(xin)量為300g/m2、350g/m2或鍍(du)(du)鋁(lv)鋅(xin)(xin)(5%鋁(lv))275g/m2、300g/m2等,較高的鍍(du)(du)層量使(shi)組合(he)樓(lou)(lou)板(ban)有更(geng)(geng)長耐久(jiu)性(xing),同等量的鍍(du)(du)鋁(lv)鋅(xin)(xin)的防(fang)銹(xiu)蝕才(cai)能(neng)大約(yue)兩倍于(yu)一般熱(re)鍍(du)(du)鋅(xin)(xin)。鍍(du)(du)鋅(xin)(xin)量也不是越厚(hou)越好(hao),當(dang)鍍(du)(du)鋅(xin)(xin)量較厚(hou)時,抗剪連接件(jian)栓釘的焊接質量就(jiu)很難保證,焊接時,宜選(xuan)用(yong)局部除鋅(xin)(xin)處理措施。
熱浸鍍(du)(du)(du)(du)鋅(xin)(xin)鋼(gang)(gang)(gang)(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)將薄鋼(gang)(gang)(gang)(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)浸入(ru)熔(rong)(rong)解的(de)鋅(xin)(xin)槽(cao)中,使其表面(mian)(mian)粘(zhan)附一層鋅(xin)(xin)的(de)薄鋼(gang)(gang)(gang)(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)。目前主要采(cai)用連續(xu)鍍(du)(du)(du)(du)鋅(xin)(xin)工(gong)藝(yi)生(sheng)產,即(ji)把(ba)成卷的(de)鋼(gang)(gang)(gang)(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)連續(xu)浸在(zai)(zai)熔(rong)(rong)解有鋅(xin)(xin)的(de)鍍(du)(du)(du)(du)槽(cao)中制(zhi)(zhi)(zhi)成鍍(du)(du)(du)(du)鋅(xin)(xin)鋼(gang)(gang)(gang)(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban);合金化鍍(du)(du)(du)(du)鋅(xin)(xin)鋼(gang)(gang)(gang)(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)。這種鋼(gang)(gang)(gang)(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)也(ye)是用熱浸法制(zhi)(zhi)(zhi)造(zao),但(dan)在(zai)(zai)出槽(cao)后(hou),立即(ji)把(ba)它(ta)加熱到500 ℃左右(you),使其生(sheng)成鋅(xin)(xin)和(he)鐵的(de)合金被膜。這種鍍(du)(du)(du)(du)鋅(xin)(xin)板(ban)(ban)(ban)(ban)(ban)(ban)具有良好(hao)的(de)涂料(liao)的(de)密(mi)著性(xing)和(he)焊接性(xing);電(dian)鍍(du)(du)(du)(du)鋅(xin)(xin)鋼(gang)(gang)(gang)(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)。用電(dian)鍍(du)(du)(du)(du)法制(zhi)(zhi)(zhi)造(zao)這種鍍(du)(du)(du)(du)鋅(xin)(xin)鋼(gang)(gang)(gang)(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)具有良好(hao)的(de)加工(gong)性(xing)。但(dan)鍍(du)(du)(du)(du)層較(jiao)薄,耐(nai)腐蝕性(xing)不如(ru)熱浸法鍍(du)(du)(du)(du)鋅(xin)(xin)板(ban)(ban)(ban)(ban)(ban)(ban);單面(mian)(mian)鍍(du)(du)(du)(du)和(he)雙面(mian)(mian)差鍍(du)(du)(du)(du)鋅(xin)(xin)鋼(gang)(gang)(gang)(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban)。單面(mian)(mian)鍍(du)(du)(du)(du)鋅(xin)(xin)鋼(gang)(gang)(gang)(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)(ban),即(ji)只(zhi)在(zai)(zai)一面(mian)(mian)鍍(du)(du)(du)(du)鋅(xin)(xin)的(de)產品(pin)。在(zai)(zai)焊接、涂裝、防銹處理、加工(gong)等方面(mian)(mian),具有比(bi)雙面(mian)(mian)鍍(du)(du)(du)(du)鋅(xin)(xin)板(ban)(ban)(ban)(ban)(ban)(ban)好(hao)的(de)適應(ying)性(xing)。