“中”，“小”，“微細”-聚氨(an)酯(zhi)銅(tong)包(bao)(bao)鋁漆包(bao)(bao)線特(te)點(dian)多說(shuo)一(yi)說(shuo)

聚氨(an)酯銅包(bao)(bao)(bao)(bao)鋁漆包(bao)(bao)(bao)(bao)線(xian)(xian)，熱級等級為(wei)130、155、180、200．醉大(da)特點是(shi)具有直焊性，耐高(gao)頻(pin)性能性好，易(yi)著(zhu)色(se)，耐潮(chao)性能好，廣(guang)泛應(ying)于電子家(jia)電和精密儀器，電訊，儀表上(shang)，聚氨(an)酯銅包(bao)(bao)(bao)(bao)鋁漆包(bao)(bao)(bao)(bao)線(xian)(xian)弱點是(shi)機械強(qiang)度(du)稍差，上(shang)海銅漆包(bao)(bao)(bao)(bao)線(xian)(xian)，耐熱性能不高(gao)，且生(sheng)產(chan)大(da)規格(ge)線(xian)(xian)的(de)柔(rou)韌性和附著(zhu)性較差，因此該聚氨(an)酯銅包(bao)(bao)(bao)(bao)鋁漆包(bao)(bao)(bao)(bao)線(xian)(xian)生(sheng)產(chan)的(de)規格(ge)以中小及微(wei)細線(xian)(xian)為(wei)多(duo)。還有QA銅包(bao)(bao)(bao)(bao)鋁漆包(bao)(bao)(bao)(bao)線(xian)(xian)也受到了很(hen)多(duo)的(de)關(guan)注呢。

銅包鋁線識別方法：

銅(tong)包鋁線大(da)都是軟銅(tong)線，識別方法很(hen)簡單，用打火(huo)機的外焰(yan)燃燒銅(tong)絲(si)的一頭，銅(tong)漆包線廠家，因為(wei)鋁絲(si)比(bi)銅(tong)絲(si)的熔點低(di)，銅(tong)漆包線價格(ge)，所以如(ru)果是銅(tong)包鋁，火(huo)焰(yan)燃燒的部分(fen)會(hui)很(hen)快化為(wei)灰燼，什么都不(bu)留下(xia)。而純銅(tong)燃燒后(hou)銅(tong)絲(si)會(hui)快速向后(hou)收縮，收縮的過(guo)程中(zhong)始終在(zai)線頭上留下(xia)一個小球(qiu)球(qiu)。

銅包鋁線對比：

與(yu)純(chun)銅導線相比(bi)銅包(bao)鋁線既具有良好(hao)的導電性又具有重量輕(qing)的優(you)點，有明顯的經(jing)濟效益，且施(shi)工(gong)中柔韌性好(hao)，易操作。相同線經(jing)重量下(xia)的長度(du)比(bi)為2.45:1因此購買(mai)1噸銅包(bao)鋁線相當(dang)于購買(mai)了2.45噸純(chun)銅線，具有節省成本的巨(ju)大優(you)勢；

與純鋁線相比：導電(dian)率(lv)更高，還增強(qiang)了(le)抗拉強(qiang)度及(ji)延伸率(lv)，銅(tong)漆包線哪家(jia)好，良好的焊(han)接性：銅(tong)包鋁線由于(yu)其表面(mian)同(tong)心(xin)的包覆了(le)一(yi)層純銅(tong)，因此具有(you)跟純銅(tong)線一(yi)樣的可焊(han)性使該產品(pin)的機械性及(ji)適用性得到大幅提升。

銅包鋁電力電纜

直流電(dian)(dian)阻率(lv)(lv)(lv)。銅包(bao)(bao)鋁(lv)線(xian)(xian)的(de)(de)(de)電(dian)(dian)阻率(lv)(lv)(lv)比純(chun)(chun)(chun)銅線(xian)(xian)大(da)，約(yue)為純(chun)(chun)(chun)銅線(xian)(xian)的(de)(de)(de)1.5倍，在(zai)(zai)陰(yin)值相(xiang)(xiang)(xiang)同(tong)(tong)時(shi)，銅包(bao)(bao)鋁(lv)線(xian)(xian)重量約(yue)為純(chun)(chun)(chun)銅線(xian)(xian)的(de)(de)(de)1/2。根(gen)據集(ji)膚(fu)效應計(ji)算，在(zai)(zai)5MHz以上高頻(pin)時(shi)，與相(xiang)(xiang)(xiang)同(tong)(tong)截面的(de)(de)(de)銅導(dao)(dao)體(ti)(ti)相(xiang)(xiang)(xiang)比，其電(dian)(dian)阻率(lv)(lv)(lv)相(xiang)(xiang)(xiang)等。在(zai)(zai)50Hz頻(pin)率(lv)(lv)(lv)的(de)(de)(de)電(dian)(dian)力電(dian)(dian)纜的(de)(de)(de)使(shi)用(yong)(yong)中(zhong)，其銅導(dao)(dao)體(ti)(ti)的(de)(de)(de)集(ji)膚(fu)效應和鄰近效應在(zai)(zai)150mm2以上就逐漸顯得(de)突出，同(tong)(tong)時(shi)由于科(ke)學技術的(de)(de)(de)不斷發(fa)展，產生(sheng)(sheng)高次諧波(bo)電(dian)(dian)流和能源(yuan)會注(zhu)入(ru)到(dao)供電(dian)(dian)系統中(zhong)，在(zai)(zai)系統的(de)(de)(de)阻抗上產生(sheng)(sheng)出相(xiang)(xiang)(xiang)應頻(pin)率(lv)(lv)(lv)的(de)(de)(de)高次諧波(bo)電(dian)(dian)壓(ya)，致使(shi)電(dian)(dian)壓(ya)的(de)(de)(de)波(bo)形發(fa)生(sheng)(sheng)畸變，增加供電(dian)(dian)系統的(de)(de)(de)損耗，使(shi)導(dao)(dao)體(ti)(ti)發(fa)熱(re)增加；此(ci)外(wai)，電(dian)(dian)纜使(shi)諧波(bo)放(fang)大(da)，在(zai)(zai)接頭(tou)處產生(sheng)(sheng)過(guo)電(dian)(dian)壓(ya)而損壞電(dian)(dian)纜頭(tou)。采用(yong)(yong)銅包(bao)(bao)鋁(lv)導(dao)(dao)體(ti)(ti)會起(qi)到(dao)降(jiang)低高次諧波(bo)產生(sheng)(sheng)的(de)(de)(de)交流阻抗（電(dian)(dian)阻）的(de)(de)(de)作用(yong)(yong)。在(zai)(zai)其他使(shi)用(yong)(yong)場合，通(tong)過(guo)采取提高銅包(bao)(bao)鋁(lv)單絲中(zhong)銅的(de)(de)(de)體(ti)(ti)積和相(xiang)(xiang)(xiang)應的(de)(de)(de)工藝措施，使(shi)銅包(bao)(bao)鋁(lv)/銅復合導(dao)(dao)體(ti)(ti)在(zai)(zai)現有同(tong)(tong)規(gui)格導(dao)(dao)體(ti)(ti)的(de)(de)(de)外(wai)徑尺寸上限內，滿足(zu)導(dao)(dao)體(ti)(ti)直流電(dian)(dian)阻要求。