鋼桶的涂裝方法

鋼桶(tong)成型(xing)后，已經成為一個(ge)可以實用(yong)的鋼桶(tong)，但為了增(zeng)加其美(mei)觀及防(fang)腐蝕能力，還必須(xu)給其進(jin)行涂(tu)裝(zhuang)處理，這(zhe)個(ge)過程一般包括涂(tu)裝(zhuang)前清洗、水份(fen)烘干、涂(tu)漆、涂(tu)層烘干、印刷等工藝過程。

國內采用廣泛(fan)的涂(tu)(tu)裝工(gong)藝是油漆涂(tu)(tu)裝工(gong)藝。涂(tu)(tu)裝工(gong)藝可(ke)以保證鋼(gang)桶外觀質量(liang)，增強鋼(gang)桶抗腐蝕能力(li)。

涂(tu)裝(zhuang)工藝(yi)按(an)噴涂(tu)方式可(ke)分為(wei)空(kong)氣噴涂(tu)、靜(jing)電噴涂(tu)和高壓(ya)無(wu)氣噴涂(tu)等幾(ji)

在(zai)涂(tu)裝前應進行(xing)除(chu)油(you)、除(chu)銹、磷化、清洗(xi)、烘(hong)干等處理，以保證涂(tu)裝質量，提高漆膜附著力。對于表面要求(qiu)不高的鋼桶產(chan)品(pin)，也可(ke)采用人(ren)工擦桶的辦法，有(you)效降低(di)成本。

涂裝的(de)后(hou)一道工序是(shi)標(biao)(biao)志的(de)印(yin)刷。以前鋼桶的(de)標(biao)(biao)志是(shi)采用空氣噴涂法，利用鏤空的(de)標(biao)(biao)志版進行噴字。隨著用戶(hu)對鋼桶外表質量要求的(de)提高，標(biao)(biao)志印(yin)刷已逐漸(jian)采用效果更好的(de)絲網印(yin)刷和熱(re)轉 印(yin)技術。

鋼(gang)桶卷封(feng)過程究(jiu)竟能卷多少層？有人認為越(yue)多越(yue)多，這話(hua)沒錯！卷邊(bian)層數越(yue)多，強度(du)越(yue)高(gao)，密封(feng)效果越(yue)好。然(ran)而是不(bu)是能夠實(shi)現十(shi)層、二十(shi)層的卷封(feng)呢(ni)？這里(li)我們且不(bu)說存(cun)在一個質量成本 問題，實(shi)際上，鋼(gang)桶廠家，這是不(bu)能夠實(shi)現。

（1）鋼(gang)桶(tong)(tong)原材(cai)(cai)(cai)料(liao)(liao)的(de)(de)(de)(de)限(xian)制(zhi) 制(zhi)作鋼(gang)桶(tong)(tong)，要求材(cai)(cai)(cai)料(liao)(liao)含碳量要低，塑性(xing)要好。因為這(zhe)樣(yang)(yang)加(jia)工性(xing)能(neng)(neng)(neng)好，焊(han)接、沖(chong)壓(ya)、脹(zhang)形都容(rong)(rong)易(yi)保證質量。但是卷(juan)邊(bian)就不(bu)(bu)一(yi)樣(yang)(yang)了，因為卷(juan)邊(bian)輥槽(cao)的(de)(de)(de)(de)大小(xiao)不(bu)(bu)可(ke)能(neng)(neng)(neng)隨著卷(juan)邊(bian)過(guo)(guo)程變化，卷(juan)邊(bian)力(li)要通(tong)過(guo)(guo) 外圍的(de)(de)(de)(de)材(cai)(cai)(cai)料(liao)(liao)逐漸傳遞到(dao)卷(juan)邊(bian)中(zhong)心(xin)去，才能(neng)(neng)(neng)把(ba)中(zhong)心(xin)卷(juan)成。而材(cai)(cai)(cai)料(liao)(liao)的(de)(de)(de)(de)塑性(xing)越好，力(li)的(de)(de)(de)(de)傳遞就越困難。可(ke)以(yi)想象，如果鋼(gang)桶(tong)(tong)的(de)(de)(de)(de)材(cai)(cai)(cai)料(liao)(liao)采用(yong)(yong)彈簧鋼(gang)，像鐘(zhong)表的(de)(de)(de)(de)法條(tiao)一(yi)樣(yang)(yang)的(de)(de)(de)(de)材(cai)(cai)(cai)料(liao)(liao)，不(bu)(bu)要說卷(juan)十層(ceng)(ceng)，恐怕就是 二十層(ceng)(ceng)也(ye)很(hen)容(rong)(rong)易(yi)，因為它彈性(xing)和(he)剛性(xing)好，通(tong)過(guo)(guo)外圍的(de)(de)(de)(de)卷(juan)封(feng)(feng)力(li)很(hen)容(rong)(rong)易(yi)傳到(dao)中(zhong)心(xin)。但這(zhe)是不(bu)(bu)可(ke)能(neng)(neng)(neng)的(de)(de)(de)(de)，20升鋼(gang)桶(tong)(tong)，就是因為這(zhe)種材(cai)(cai)(cai)料(liao)(liao)彈性(xing)好，所以(yi)在(zai)卷(juan)封(feng)(feng)結(jie)束后，卷(juan)封(feng)(feng)力(li)消失的(de)(de)(de)(de)情況下，很(hen)容(rong)(rong)易(yi)又反(fan)彈回原來的(de)(de)(de)(de) 狀(zhuang)態(tai)，也(ye)就是說恢復到(dao)卷(juan)封(feng)(feng)開始(shi)的(de)(de)(de)(de)樣(yang)(yang)子。這(zhe)樣(yang)(yang)顯(xian)然(ran)不(bu)(bu)是我(wo)們(men)需要的(de)(de)(de)(de)。所以(yi)，我(wo)們(men)不(bu)(bu)可(ke)能(neng)(neng)(neng)選用(yong)(yong)高(gao)彈性(xing)的(de)(de)(de)(de)材(cai)(cai)(cai)料(liao)(liao)。就目(mu)前全世(shi)界用(yong)(yong)來制(zhi)作鋼(gang)桶(tong)(tong)的(de)(de)(de)(de)材(cai)(cai)(cai)料(liao)(liao)來看，我(wo)國的(de)(de)(de)(de)材(cai)(cai)(cai)料(liao)(liao)剛性(xing)z大，所以(yi)質量也(ye)較(jiao)難保 證。而且卷(juan)邊(bian)層(ceng)(ceng)數沒有超過(guo)(guo)七(qi)層(ceng)(ceng)的(de)(de)(de)(de)。據國外有關的(de)(de)(de)(de)研究，閉口鋼(gang)桶(tong)(tong)，鋼(gang)桶(tong)(tong)卷(juan)邊(bian)層(ceng)(ceng)數不(bu)(bu)會超過(guo)(guo)七(qi)層(ceng)(ceng)，顯(xian)然(ran)卷(juan)封(feng)(feng)力(li)傳送不(bu)(bu)到(dao)那么遠。

為一次性(xing)鋼(gang)(gang)桶(tong)(tong)(tong)(tong)(tong)(tong)的(de)(de)(de)使(shi)用(yong)作了(le)(le)(le)技(ji)術準備 目前國(guo)際(ji)行一次性(xing)的(de)(de)(de)包(bao)裝(zhuang)鋼(gang)(gang)桶(tong)(tong)(tong)(tong)(tong)(tong)。只要能(neng)把貨(huo)物安全無誤地(di)送達目的(de)(de)(de)地(di)，也(ye)就完(wan)成(cheng)了(le)(le)(le)包(bao)裝(zhuang)鋼(gang)(gang)桶(tong)(tong)(tong)(tong)(tong)(tong)的(de)(de)(de)包(bao)裝(zhuang)使(shi)命。所(suo)謂一次性(xing)包(bao)裝(zhuang)鋼(gang)(gang)桶(tong)(tong)(tong)(tong)(tong)(tong)就是(shi)在滿足安全運輸貨(huo)物的(de)(de)(de)前提下，生產鋼(gang)(gang)桶(tong)(tong)(tong)(tong)(tong)(tong)所(suo)用(yong)的(de)(de)(de)鋼(gang)(gang)板厚(hou)度(du)在同(tong)一品質的(de)(de)(de)前提下使(shi)用(yong)更薄(bo)的(de)(de)(de)鋼(gang)(gang)板厚(hou)度(du)代替而(er)生產的(de)(de)(de)鋼(gang)(gang)桶(tong)(tong)(tong)(tong)(tong)(tong)。鋼(gang)(gang)桶(tong)(tong)(tong)(tong)(tong)(tong)的(de)(de)(de)主材(cai)變(bian)薄(bo)，是(shi)包(bao)裝(zhuang)鋼(gang)(gang)桶(tong)(tong)(tong)(tong)(tong)(tong)的(de)(de)(de)重量大大地(di)減(jian)輕了(le)(le)(le)，不(bu)僅節約了(le)(le)(le)原材(cai)料(liao)，也(ye)是(shi)包(bao)裝(zhuang)的(de)(de)(de)成(cheng)本(ben)降低了(le)(le)(le)，同(tong)時減(jian)少了(le)(le)(le)使(shi)用(yong)二次鋼(gang)(gang)桶(tong)(tong)(tong)(tong)(tong)(tong)時帶(dai)來的(de)(de)(de)污染。與(yu)國(guo)外相比(bi)，盛裝(zhuang)同(tong)樣的(de)(de)(de)包(bao)裝(zhuang)物，鋼(gang)(gang)桶(tong)(tong)(tong)(tong)(tong)(tong)，國(guo)外鋼(gang)(gang)桶(tong)(tong)(tong)(tong)(tong)(tong)比(bi)國(guo)內鋼(gang)(gang)桶(tong)(tong)(tong)(tong)(tong)(tong)少用(yong)鋼(gang)(gang)材(cai)占10～25%，是(shi)很了(le)(le)(le)不(bu)起的(de)(de)(de)。通過對(dui)比(bi)，不(bu)難(nan)看出，“縮(suo)頸”技(ji)術所(suo)減(jian)薄(bo)的(de)(de)(de)材(cai)料(liao)厚(hou)度(du)與(yu)國(guo)際(ji)行的(de)(de)(de)趨勢是(shi)一致的(de)(de)(de)，技(ji)術是(shi)可行的(de)(de)(de)，靠得住的(de)(de)(de)。因此一次性(xing)鋼(gang)(gang)桶(tong)(tong)(tong)(tong)(tong)(tong)的(de)(de)(de)使(shi)用(yong)要靠“縮(suo)頸”等(deng)技(ji)術的(de)(de)(de)支(zhi)持(chi)。