一、銅包鋁電(dian)線的(de)壽命影響因素(su)

銅包鋁(lv)電線通(tong)常具(ju)有比銅導線更經(jing)濟(ji)的優勢，但其使(shi)用(yong)壽命取決于多(duo)種因素：

1. 環境溫度：鋁線(xian)(xian)(xian)的(de)線(xian)(xian)(xian)膨(peng)脹(zhang)系數大于(yu)銅線(xian)(xian)(xian)，鋁漆包線(xian)(xian)(xian)廠家，所以在高溫環境下容易老化，壽(shou)命減短。

2. 電(dian)流大小：鋁線比銅線阻值(zhi)大，發熱高，鋁漆包線生產(chan)廠家，如(ru)果(guo)過載容易燒損。

3. 接(jie)(jie)頭(tou)：如果(guo)接(jie)(jie)頭(tou)處理(li)不好，也會降(jiang)低電線的壽命。

4. 安裝方式：彎(wan)曲或被(bei)壓碾可能會對電線產生(sheng)損傷，影(ying)響壽命。

漆包線

在(zai)退火爐前裝置助力(li)輪對張(zhang)(zhang)力(li)的(de)(de)操控有很(hen)大(da)(da)協助。軟(ruan)銅(tong)線(xian)(xian)(xian)在(zai)室溫下其醉(zui)(zui)大(da)(da)不(bu)(bu)(bu)(bu)延伸(shen)張(zhang)(zhang)力(li)約為(wei)15kg/mm2，在(zai)400℃下醉(zui)(zui)大(da)(da)不(bu)(bu)(bu)(bu)延伸(shen)張(zhang)(zhang)力(li)約為(wei)7kg/mm2；在(zai)460℃下醉(zui)(zui)大(da)(da)不(bu)(bu)(bu)(bu)延伸(shen)張(zhang)(zhang)力(li)為(wei)4kg/mm2；在(zai)500℃下醉(zui)(zui)大(da)(da)不(bu)(bu)(bu)(bu)延伸(shen)張(zhang)(zhang)力(li)為(wei)2kg/mm2。在(zai)正常的(de)(de)漆包(bao)線(xian)(xian)(xian)涂制過(guo)程中，漆包(bao)線(xian)(xian)(xian)的(de)(de)張(zhang)(zhang)力(li)要顯著小于不(bu)(bu)(bu)(bu)延伸(shen)張(zhang)(zhang)力(li)，需求操控在(zai)50%擺布，放線(xian)(xian)(xian)張(zhang)(zhang)力(li)操控在(zai)不(bu)(bu)(bu)(bu)延伸(shen)張(zhang)(zhang)力(li)的(de)(de)20%擺布。

大標準(zhun)大容量線(xian)(xian)軸通(tong)常(chang)(chang)選(xuan)用(yong)徑向旋(xuan)轉式(shi)放線(xian)(xian)器；中(zhong)等(deng)標準(zhun)導線(xian)(xian)通(tong)常(chang)(chang)選(xuan)用(yong)越端(duan)式(shi)或毛(mao)(mao)刷(shua)式(shi)放線(xian)(xian)器；微細標準(zhun)導線(xian)(xian)通(tong)常(chang)(chang)選(xuan)用(yong)毛(mao)(mao)刷(shua)式(shi)或雙錐(zhui)套式(shi)放線(xian)(xian)器。

不(bu)論選用哪(na)種放線(xian)(xian)方(fang)法，鋁漆包線(xian)(xian)，都對裸銅線(xian)(xian)線(xian)(xian)軸(zhou)的布局和質量有嚴格需求

----外表應光亮以確保線材不被擦(ca)傷

----軸芯兩(liang)邊及側板內外有2—4mm半徑的r角(jiao)以確(que)保(bao)放線過程中(zhong)能均(jun)衡放出(chu)

----線軸加(jia)工完后，必(bi)須作(zuo)動、靜平衡(heng)試驗

----毛(mao)刷放(fang)線(xian)(xian)器需求(qiu)軸芯直(zhi)徑：側板直(zhi)徑小于1：1.7；越端放(fang)線(xian)(xian)需求(qiu)小于1：1.9，不然(ran)放(fang)線(xian)(xian)至軸芯時(shi)會呈(cheng)現斷線(xian)(xian)表象

銅(tong)(tong)(tong)包鋁(lv)導(dao)(dao)體(ti)是(shi)(shi)(shi)按(an)(an)重(zhong)(zhong)(zhong)量出(chu)售的(de)，純銅(tong)(tong)(tong)導(dao)(dao)體(ti)也是(shi)(shi)(shi)按(an)(an)重(zhong)(zhong)(zhong)量出(chu)售的(de)，銅(tong)(tong)(tong)包鋁(lv)導(dao)(dao)體(ti)的(de)價(jia)格要比(bi)相同重(zhong)(zhong)(zhong)量的(de)純銅(tong)(tong)(tong)導(dao)(dao)體(ti)貴(gui)一些。但(dan)是(shi)(shi)(shi)同樣重(zhong)(zhong)(zhong)量的(de)銅(tong)(tong)(tong)包鋁(lv)要比(bi)純銅(tong)(tong)(tong)導(dao)(dao)體(ti)長度(du)(du)長很多(duo)，而(er)電纜是(shi)(shi)(shi)按(an)(an)長度(du)(du)計算的(de)。相同重(zhong)(zhong)(zhong)量銅(tong)(tong)(tong)包鋁(lv)線是(shi)(shi)(shi)銅(tong)(tong)(tong)線長度(du)(du)的(de)2.5倍，鋁(lv)漆包線價(jia)格，價(jia)格僅(jin)僅(jin)是(shi)(shi)(shi)每噸(dun)多(duo)幾百元。綜合(he)下來，銅(tong)(tong)(tong)包鋁(lv)就很有(you)優勢。由于銅(tong)(tong)(tong)包鋁(lv)電纜比(bi)較輕，電纜的(de)運輸成本(ben)、安裝架設(she)成本(ben)都會有(you)所降低，會給(gei)施工帶(dai)來一定的(de)方便性。