銅是
電纜行業的主要原料,但易被空氣中的氧氣在酸性條件下氧化成黑色的CuO,當銅導體表麵有水膜或水珠時,由於大氣中含有大量塵埃,如煙霧、煤炭、汽車尾氣、氯化物及其他酸、堿、鹽顆粒粉塵等,這些有害物質溶解於水膜或水珠中,即可形成電解液,從而加劇銅導體的氧化變色。
通用橡套電纜是以5類(lei)銅(tong)導(dao)體(ti)作(zuo)為(wei)導(dao)電(dian)線(xian)芯(xin),在(zai)其(qi)生(sheng)產(chan)過(guo)程(cheng)中(zhong)常(chang)常(chang)發(fa)現(xian)銅(tong)導(dao)體(ti)氧(yang)化(hua)變(bian)色(se),這(zhe)嚴(yan)重(zhong)地(di)影(ying)響(xiang)了(le)產(chan)品(pin)的(de)質(zhi)量(liang),也(ye)成(cheng)為(wei)了(le)國(guo)內(nei)眾(zhong)多(duo)電(dian)纜(lan)生(sheng)產(chan)廠(chang)家(jia)的(de)一(yi)個(ge)老(lao)大(da)難(nan)技(ji)術(shu)問(wen)題(ti)。下(xia)麵(mian),珠(zhu)江(jiang)電(dian)纜(lan)以(yi)通(tong)用(yong)橡(xiang)套(tao)電(dian)纜(lan)的(de)生(sheng)產(chan)為(wei)例(li),如(ru)何(he)預(yu)防(fang)橡(xiang)套(tao)電(dian)纜(lan)導(dao)體(ti)氧(yang)化(hua)。
1、銅杆進廠前運輸、檢測及儲存
我國大多數電纜企業用銅應選擇質優金屬銅杆,規範供應商運輸、交貨流程與製度,銅杆進廠檢驗依照GB/T 3048.2或huo電dian纜lan企qi業ye企qi標biao執zhi行xing。銅tong杆gan的de儲chu存cun可ke用yong塑su料liao布bu或huo塑su料liao薄bo膜mo覆fu蓋gai銅tong杆gan,用yong簡jian單dan的de物wu理li阻zu隔ge法fa阻zu止zhi銅tong杆gan與yu潮chao濕shi空kong氣qi的de接jie觸chu。車che間jian領ling用yong銅tong杆gan時shi一yi定ding要yao逐zhu個ge銅tong杆gan卷juan進jin行xing肉rou眼yan檢jian查zha是shi否fou有you發fa黑hei現xian象xiang,從cong生sheng產chan源yuan頭tou加jia以yi控kong製zhi。
2、銅杆拉絲工序的控製
0.4mm單絲的拉製一般采用連續退火的銅大拉機和中拉機,需經過放線、拉絲與退火、冷卻、烘幹、shouxiandenggongxu。shouxian,yingxuanquheshidemoju,qiebukeguoxiao,fouzehuiqiangzhishijinshutongdejinggebianyi,jiajujinshuwendudejijushangsheng。qici,kaijiqianjianzharuhuayedesuanjiandu,quebaoweijianxingrongye,tongshilasiyouzhongyingtianjiakangyanghuaji,zaitongdaotibiaomianxingchengdunhuamo,fangzhiyanghua;放線時,保持放線張力穩定、均勻,不可過度顫動;拉絲過程中操作者應保證恰當水位高度,保證退火程度均勻,避免退火不足或退火過度;收線時,銅導體表麵不應有殘餘液體,可在收線前方處放置一塊幹燥的毛氈(經常更換),以(yi)保(bao)證(zheng)單(dan)絲(si)的(de)幹(gan)燥(zao)。最(zui)後(hou),在(zai)拉(la)絲(si)下(xia)盤(pan)後(hou)用(yong)透(tou)明(ming)塑(su)料(liao)薄(bo)膜(mo)密(mi)封(feng),存(cun)放(fang)於(yu)幹(gan)燥(zao)環(huan)境(jing)之(zhi)中(zhong),待(dai)流(liu)轉(zhuan),否(fou)則(ze)會(hui)由(you)於(yu)導(dao)體(ti)表(biao)麵(mian)溫(wen)度(du)較(jiao)高(gao)而(er)易(yi)與(yu)潮(chao)濕(shi)的(de)空(kong)氣(qi)發(fa)生(sheng)氧(yang)化(hua)的(de)風(feng)險(xian)。

3、銅絲絞合(束絞)與絕緣橡皮、護套橡皮擠出工序
yitongsijiaoheweili,daotizaijiaoheguochengzhong,jingguogedaoyamoshidejinshutongjinggegaibianjiegou,zaiqiangwailizuoyongxia,guomohoutongdaotiwendujiaoguomoqianyoujiaodatigao,yincitongdaotiwaicengyiyanghua。gukezaijiaoheguochengzhongyongshuyeruanguanjiangkangyangjidirutongsizhong,dirubiaozhunyiganghaojinruntongsibiaomianweizhun,bimianguoshaocunzaijubuyanghuahuoguoduolangfeidexianxiangfasheng,zaisuoyoufangyanghuagongzuozhunbeiwentuohou,zaikaijiyunzhuan。shouxianchuyingbaozhengshouxianpanganzao,shouxianpanzhuangmanhou,yongtoumingsuliaobomomifeng。
daotijibaojueyuanqianyingzongbaohuoraobaojuzhidai,fangzhixiangpijueyuancailiaozhongdewuzhifushidaoti。jueyuanxiangpihehutaoxiangpizaijichuguochengzhong,yingbimianxiantoujinshui,erfashengxiantouyanghuabianheixianxiang。
我們在日常生產的觀察中發現,通過選擇銅杆、有效地控製拉絲工藝及乳化液濃度和溫度、退火工藝、導(dao)體(ti)絞(jiao)合(he)或(huo)束(shu)絞(jiao)銅(tong)絲(si)表(biao)麵(mian)的(de)鈍(dun)化(hua)處(chu)理(li)及(ji)防(fang)止(zhi)線(xian)頭(tou)進(jin)水(shui)等(deng)手(shou)段(duan),加(jia)之(zhi),車(che)間(jian)操(cao)作(zuo)人(ren)員(yuan)應(ying)樹(shu)立(li)質(zhi)量(liang)意(yi)識(shi),加(jia)強(qiang)業(ye)務(wu)培(pei)訓(xun),能(neng)清(qing)楚(chu)地(di)認(ren)識(shi)到(dao)銅(tong)絲(si)氧(yang)化(hua)帶(dai)來(lai)的(de)不(bu)良(liang)後(hou)果(guo),嚴(yan)把(ba)質(zhi)量(liang)關(guan),才(cai)能(neng)有(you)效(xiao)地(di)控(kong)製(zhi)電(dian)纜(lan)銅(tong)導(dao)體(ti)的(de)質(zhi)量(liang),防(fang)止(zhi)其(qi)氧(yang)化(hua),極(ji)大(da)地(di)提(ti)高(gao)了(le)工(gong)作(zuo)效(xiao)率(lv),減(jian)少(shao)返(fan)工(gong)頻(pin)次(ci),從(cong)而(er)達(da)到(dao)降(jiang)低(di)成(cheng)本(ben)和(he)提(ti)高(gao)內(nei)在(zai)產(chan)品(pin)質(zhi)量(liang)的(de)有(you)益(yi)效(xiao)果(guo)。
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