防火電纜廠家帶你快速的去了解防火電纜的質量好壞問題

　   1、銅(tong)(tong)包(bao)鋁，銅(tong)(tong)包(bao)銅(tong)(tong)的辨認方(fang)法(fa)

　　銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)包(bao)鋁電(dian)(dian)線大(da)都(dou)是軟(ruan)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)線，辨認方法很簡(jian)略，用打火機的(de)(de)(de)外焰燃(ran)燒(shao)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)絲(si)(si)(si)的(de)(de)(de)一(yi)(yi)(yi)頭(tou)，因(yin)(yin)為鋁絲(si)(si)(si)比(bi)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)絲(si)(si)(si)的(de)(de)(de)熔(rong)點低，所以如果是銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)包(bao)鋁的(de)(de)(de)話(hua)(hua)，火焰焚燒(shao)的(de)(de)(de)部分會(hui)(hui)很快(kuai)(kuai)化為灰燼，什么都(dou)不留下。而純銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)的(de)(de)(de)話(hua)(hua)，燃(ran)燒(shao)后銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)絲(si)(si)(si)會(hui)(hui)快(kuai)(kuai)速向(xiang)后縮(suo)短，縮(suo)短的(de)(de)(de)過程中一(yi)(yi)(yi)直在線頭(tou)上留下一(yi)(yi)(yi)個小球球。銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)包(bao)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)，便(bian)(bian)(bian)是紫銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)包(bao)黃(huang)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)。紫銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)也便(bian)(bian)(bian)是無氧(yang)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)，電(dian)(dian)阻(zu)契合(he)國家標(biao)準。而黃(huang)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)便(bian)(bian)(bian)是雜質較(jiao)大(da)的(de)(de)(de)，二次回爐的(de)(de)(de)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)絲(si)(si)(si)。因(yin)(yin)為紫銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)的(de)(de)(de)本錢比(bi)黃(huang)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)每噸高4000多(duo)元，所以一(yi)(yi)(yi)些黑(hei)心廠家就出產紫銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)包(bao)黃(huang)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)的(de)(de)(de)電(dian)(dian)線，降低本錢，從中牟(mou)取(qu)暴(bao)利(li)。鑒定銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)包(bao)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)可以用鋼鋸(ju)或剪刀(dao)從頭(tou)剪下一(yi)(yi)(yi)小截銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)絲(si)(si)(si)，然后自己查詢截面，會(hui)(hui)發(fa)現(xian)截面呈現(xian)許多(duo)肉眼可以分辯的(de)(de)(de)小黃(huang)點。再者(zhe)便(bian)(bian)(bian)是銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)包(bao)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)比(bi)無氧(yang)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)絲(si)(si)(si)硬。

   　2、拉絲電線的辨認方方

　　拉絲電線從(cong)外(wai)觀上(shang)無法(fa)分辯。但是分量比國(guo)標電線輕。還有一(yi)個最簡略的方(fang)法(fa)，便是當場從(cong)中(zhong)心剪(jian)開，實踐測(ce)量一(yi)下。呵呵

　　3、絕緣(yuan)的辨認方法

　　絕(jue)(jue)緣(yuan)的辨認(ren)相對比較專業。要(yao)通過專業的一(yi)(yi)起設備作耐壓實驗(yan)等。簡略的鑒別方法是(shi)用手摳(kou)，一(yi)(yi)扣掉(diao)一(yi)(yi)塊的絕(jue)(jue)緣(yuan)為劣質(zhi)聚氯乙烯；或(huo)許剪下一(yi)(yi)段，用力打個折，然后鋪開，查詢(xun)打折出，發白或(huo)許開裂(lie)為劣質(zhi)絕(jue)(jue)緣(yuan)。

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