鋼桶卷封過(guo)程究竟能(neng)卷多(duo)少層？有人(ren)認為越多(duo)越多(duo)，這話(hua)沒錯！卷邊層數越多(duo)，強度越高(gao)，密封效果越好。然而是(shi)不是(shi)能(neng)夠實現十層、二十層的卷封呢？這里我們(men)且不說存在一個質量成(cheng)本(ben) 問題，實際上，這是(shi)不能(neng)夠實現。

（1）鋼桶原材(cai)(cai)料(liao)(liao)的(de)(de)(de)(de)限(xian)制(zhi)(zhi) 制(zhi)(zhi)作鋼桶，要(yao)求材(cai)(cai)料(liao)(liao)含碳量(liang)要(yao)低，塑性(xing)要(yao)好。因(yin)(yin)為(wei)這(zhe)樣(yang)(yang)(yang)加工(gong)性(xing)能(neng)好，焊接(jie)、沖壓(ya)、脹形都容(rong)易保(bao)證質量(liang)。但是(shi)(shi)卷(juan)(juan)(juan)(juan)邊(bian)(bian)就(jiu)(jiu)不(bu)(bu)(bu)一(yi)樣(yang)(yang)(yang)了，因(yin)(yin)為(wei)卷(juan)(juan)(juan)(juan)邊(bian)(bian)輥槽(cao)的(de)(de)(de)(de)大小不(bu)(bu)(bu)可能(neng)隨著卷(juan)(juan)(juan)(juan)邊(bian)(bian)過(guo)程變化，卷(juan)(juan)(juan)(juan)邊(bian)(bian)力(li)要(yao)通過(guo) 外圍的(de)(de)(de)(de)材(cai)(cai)料(liao)(liao)逐漸傳遞到(dao)(dao)卷(juan)(juan)(juan)(juan)邊(bian)(bian)中心去，才能(neng)把(ba)中心卷(juan)(juan)(juan)(juan)成。而材(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(jiu)(jiu)越困難(nan)(nan)。可以想象，如果(guo)鋼桶的(de)(de)(de)(de)材(cai)(cai)料(liao)(liao)采用(yong)彈(dan)簧(huang)鋼，開口鋼桶批發，像鐘表的(de)(de)(de)(de)法(fa)條一(yi)樣(yang)(yang)(yang)的(de)(de)(de)(de)材(cai)(cai)料(liao)(liao)，不(bu)(bu)(bu)要(yao)說卷(juan)(juan)(juan)(juan)十層(ceng)，恐(kong)怕(pa)就(jiu)(jiu)是(shi)(shi) 二(er)十層(ceng)也(ye)很容(rong)易，因(yin)(yin)為(wei)它(ta)彈(dan)性(xing)和剛性(xing)好，通過(guo)外圍的(de)(de)(de)(de)卷(juan)(juan)(juan)(juan)封(feng)(feng)力(li)很容(rong)易傳到(dao)(dao)中心。但這(zhe)是(shi)(shi)不(bu)(bu)(bu)可能(neng)的(de)(de)(de)(de)，就(jiu)(jiu)是(shi)(shi)因(yin)(yin)為(wei)這(zhe)種材(cai)(cai)料(liao)(liao)彈(dan)性(xing)好，所以在卷(juan)(juan)(juan)(juan)封(feng)(feng)結(jie)束后(hou)，卷(juan)(juan)(juan)(juan)封(feng)(feng)力(li)消(xiao)失的(de)(de)(de)(de)情(qing)況下，很容(rong)易又(you)反彈(dan)回原來的(de)(de)(de)(de) 狀態，也(ye)就(jiu)(jiu)是(shi)(shi)說恢復到(dao)(dao)卷(juan)(juan)(juan)(juan)封(feng)(feng)開始的(de)(de)(de)(de)樣(yang)(yang)(yang)子(zi)。這(zhe)樣(yang)(yang)(yang)顯(xian)然不(bu)(bu)(bu)是(shi)(shi)我(wo)們(men)需要(yao)的(de)(de)(de)(de)。所以，我(wo)們(men)不(bu)(bu)(bu)可能(neng)選用(yong)高彈(dan)性(xing)的(de)(de)(de)(de)材(cai)(cai)料(liao)(liao)。就(jiu)(jiu)目前全世界用(yong)來制(zhi)(zhi)作鋼桶的(de)(de)(de)(de)材(cai)(cai)料(liao)(liao)來看(kan)，我(wo)國的(de)(de)(de)(de)材(cai)(cai)料(liao)(liao)剛性(xing)z大，所以質量(liang)也(ye)較(jiao)難(nan)(nan)保(bao) 證。而且卷(juan)(juan)(juan)(juan)邊(bian)(bian)層(ceng)數沒(mei)有超(chao)過(guo)七層(ceng)的(de)(de)(de)(de)。據國外有關的(de)(de)(de)(de)研究，鋼桶卷(juan)(juan)(juan)(juan)邊(bian)(bian)層(ceng)數不(bu)(bu)(bu)會超(chao)過(guo)七層(ceng)，顯(xian)然卷(juan)(juan)(juan)(juan)封(feng)(feng)力(li)傳送不(bu)(bu)(bu)到(dao)(dao)那么(me)遠。

鋼桶用鋼板的分類

鋼(gang)(gang)(gang)桶用鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)按(an)厚(hou)度分(fen)類(lei)：薄板(ban)(ban)(ban)(ban)(ban)、中板(ban)(ban)(ban)(ban)(ban)、厚(hou)板(ban)(ban)(ban)(ban)(ban)、特厚(hou)板(ban)(ban)(ban)(ban)(ban)。按(an)生產方法分(fen)類(lei)：熱軋鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)、冷軋鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)。按(an)表(biao)面特征分(fen)類(lei)：鍍(du)鋅板(ban)(ban)(ban)(ban)(ban)（熱鍍(du)鋅板(ban)(ban)(ban)(ban)(ban)、電鍍(du)鋅板(ban)(ban)(ban)(ban)(ban)）、鍍(du)錫板(ban)(ban)(ban)(ban)(ban)、復(fu)合鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)、彩色涂(tu)層(ceng)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)。 按(an)用途(tu)分(fen)類(lei)：橋梁鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)、鍋爐鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)、造船鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)、裝甲鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)、汽(qi)車鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)、屋面鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)、結構鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)、電工鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)（硅鋼(gang)(gang)(gang)片）、彈簧鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)，其他(ta)。。。。。。。。。。。。。。。

鋼(gang)桶卷邊三角區滲(shen)漏的補救

（一）、用卷(juan)(juan)(juan)(juan)封滾輪(lun)再靠一次 造成鋼(gang)桶滲漏(lou)的(de)原(yuan)(yuan)因有(you)很多種，200l開(kai)(kai)口(kou)鋼(gang)桶，但(dan)既然已經產生了滲漏(lou)，大部分的(de)原(yuan)(yuan)因都是產生了縫隙(xi)（卷(juan)(juan)(juan)(juan)邊擠(ji)破不在此列），所以(yi)，將卷(juan)(juan)(juan)(juan)邊滾輪(lun)的(de)z低點再下降一些(xie)，開(kai)(kai)口(kou)烤漆鋼(gang)桶，或(huo)(huo)將壓盤再壓緊一些(xie)。或(huo)(huo)再換一滾輪(lun)槽(cao)較小的(de)滾輪(lun)，金華開(kai)(kai)口(kou)鋼(gang)桶，然后(hou)將滲漏(lou)鋼(gang)桶置于(yu)卷(juan)(juan)(juan)(juan)封裝配(pei)機上再卷(juan)(juan)(juan)(juan)靠一次，以(yi)使卷(juan)(juan)(juan)(juan)邊更緊些(xie)，經驗告訴我們，一般情(qing)況下有(you)50%的(de)滲漏(lou)桶可(ke)以(yi)達(da)到不滲漏(lou)。

（二）使用釬錫修補 為了使已滲漏的鋼桶(tong)進入合格品(pin)行列，采用錫釬焊補漏較為理想，既修補牢固，補焊處周圍也不(bu)變形。

（三(san)）用(yong)補(bu)漏膠修補(bu) 近幾年國內(nei)出現了(le)不少新(xin)型的(de)補(bu)漏膠，可(ke)用(yong)來進行鋼桶修補(bu)，但要慎重(zhong)的(de)是。有(you)些補(bu)漏膠不耐(nai)高溫。在(zai)遠紅(hong)外(wai)油漆干燥爐內(nei)烘烤會(hui)熔化流掉，有(you)的(de)不耐(nai)腐蝕(shi)，盛裝某些化工(gong)產品時可(ke)能再產生滲漏。

（四）氣焊補(bu)(bu)漏 氣焊補(bu)(bu)漏是采用較多的傳統(tong)方法，補(bu)(bu)漏效(xiao)果較好。補(bu)(bu)漏后一(yi)般(ban)不(bu)會再滲(shen)漏，但由于氣焊熱(re)影響(xiang)(xiang)區較大，易(yi)造成大面積(ji)的變形(xing)和補(bu)(bu)疤，影響(xiang)(xiang)了外(wai)觀質量，一(yi)般(ban)只能(neng)降(jiang)價出售。

（五）弧(hu)焊(han)補漏 目前有不少(shao)企業開始采(cai)用弧(hu)焊(han)補漏，效(xiao)果(guo)非常好(hao)，補焊(han)后的(de)(de)鋼桶完全可以作為正1品出(chu)售，其密封質量(liang)和外觀質量(liang)均與一次性合格的(de)(de)鋼桶沒有差別。