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銅線鍍錫的原因及流程工藝銅線鍍錫的原因: 1. 給(gei)銅(tong)線(xian)鍍錫主要是(shi)為了(le)防止銅(tong)暴(bao)露在空氣中而被氧化形(xing)成一層膜——銅(tong)綠。生成的(de)銅(tong)綠的(de)導(dao)電(dian)性很差,會增加(jia)電(dian)阻。鍍錫的(de)銅(tong)線(xian)可防止發(fa)生氧化還原反應(ying); 可以增加(jia)散熱;可以改(gai)善(shan)導(dao)電(dian),改(gai)善(shan)導(dao)線(xian)性能。 2. 銅導線(xian)鍍(du)錫還可(ke)以防(fang)止絕緣(yuan)橡皮發(fa)粘,線(xian)芯(xin)發(fa)黑變脆,并(bing)提(ti)高其可(ke)焊性能(neng)。鍍(du)錫銅線(xian)主要用于橡皮絕緣(yuan)的(de)(de)礦用電(dian)(dian)纜、軟電(dian)(dian)線(xian)、軟電(dian)(dian)纜和(he)船用電(dian)(dian)纜等(deng)的(de)(de)導電(dian)(dian)線(xian)芯(xin),或者用作電(dian)(dian)纜的(de)(de)外屏(ping)蔽編織層和(he)電(dian)(dian)刷線(xian)。 鍍錫銅線生產工藝流程: 1. 放線(xian)(xian)(xian)。放線(xian)(xian)(xian)是(shi)生(sheng)產(chan)中(zhong)的關鍵,剛拉出的細銅線(xian)(xian)(xian)由于表(biao)面(mian)有潤滑液, 銅線(xian)(xian)(xian)表(biao)面(mian)極(ji)易氧化,應盡(jin)快(kuai)鍍錫。建(jian)議收(shou)線(xian)(xian)(xian)的使用φ300線(xian)(xian)(xian)盤(pan), 并(bing)要(yao)(yao)(yao)求(qiu)銅線(xian)(xian)(xian)排線(xian)(xian)(xian)均勻, 松緊要(yao)(yao)(yao)適(shi)中(zhong), 盤(pan)沿要(yao)(yao)(yao)光滑。放線(xian)(xian)(xian)宜采用越(yue)端式,因(yin)為線(xian)(xian)(xian)徑比較細, 放線(xian)(xian)(xian)速度快(kuai), 生(sheng)產(chan)過程(cheng)中(zhong)極(ji)易斷(duan)線(xian)(xian)(xian)。 2. 退火。銅線(xian)的(de)(de)退火溫(wen)度(du)是影響(xiang)成(cheng)品(pin)線(xian)伸長率的(de)(de)關鍵因素。因為還要進錫爐二次加熱, 因而退火溫(wen)度(du)不(bu)要太高。對于(yu)直(zhi)徑(jing)為0. 2 mm以(yi)下(xia)的(de)(de)細(xi)線(xian)來(lai)說(shuo), 宜控制在 400~ 550 °C,在這里(li)要強調一點(dian)現在公司生產的(de)(de)鍍錫退火機退火爐長度(du)不(bu)一樣(yang)(yang),保溫(wen)控溫(wen)也不(bu)一樣(yang)(yang),有的(de)(de)是電(dian)熱管,有的(de)(de)是電(dian)爐絲,可根(gen)據設備調節溫(wen)度(du)。 3. 酸洗(xi)。銅(tong)線(xian)在進(jin)入錫爐前,都(dou)會(hui)用(yong)適當的(de)酸洗(xi)液(ye)進(jin)行清洗(xi),以保證(zheng)錫層和銅(tong)線(xian)有(you)良好的(de)附(fu)著(zhu)性(xing)。酸洗(xi)液(ye)采(cai)用(yong)鍍錫助焊劑,建議比(bi)例為1∶3。為保證(zheng)清洗(xi)干凈,應采(cai)用(yong)毛氈壓線(xian)方式。 資料來源于網絡(luo)如有侵權聯系(xi)刪除! |