一、繞包線是什么
定義
繞包線是用天(tian)然絲(si)、滌(di)綸絲(si)、玻(bo)璃(li)絲(si)、絕(jue)緣(yuan)(yuan)紙或合成(cheng)樹脂薄(bo)膜等(deng)緊密繞包在導電線(xian)芯上,形成(cheng)絕(jue)緣(yuan)(yuan)層(ceng)(ceng)(ceng)。也有在漆包線(xian)上再統(tong)包絕(jue)緣(yuan)(yuan)層(ceng)(ceng)(ceng)的。除薄(bo)膜絕(jue)緣(yuan)(yuan)層(ceng)(ceng)(ceng)外,其他(ta)如玻(bo)璃(li)絲(si)等(deng)須經膠(jiao)粘絕(jue)緣(yuan)(yuan)漆的浸漬處(chu)理,以提高(gao)其電性能(neng),機械性能(neng)和(he)防(fang)潮性能(neng),實際(ji)上是組合絕(jue)緣(yuan)(yuan)。
特點
具(ju)有優(you)良的電(dian)(dian)(dian)絕緣性能(neng)、耐(nai)高(gao)電(dian)(dian)(dian)壓(ya)(ya)、高(gao)頻損耗小、不吸潮、絕緣電(dian)(dian)(dian)阻大;具(ju)有優(you)良的耐(nai)燃、耐(nai)老化性能(neng)、使用壽命(ming)長。繞包線的絕緣層較漆包線厚,是組合(he)絕緣,電(dian)(dian)(dian)性能(neng)較高(gao),能(neng)較好(hao)地(di)承受(shou)過電(dian)(dian)(dian)壓(ya)(ya)及過載負荷,一般應用于大中(zhong)整電(dian)(dian)(dian)工(gong)產品中(zhong)。薄膜統(tong)包線具(ju)有更高(gao)的機(ji)械性能(neng)和電(dian)(dian)(dian)性能(neng),用于大、中(zhong)型電(dian)(dian)(dian)機(ji),效果良好(hao)。
二、繞包線與漆包線的區別
漆(qi)包(bao)線(xian)是(shi)繞(rao)組線(xian)的一個主要品(pin)種(zhong)(zhong),由(you)導(dao)體(ti)和絕緣層(ceng)兩部組成,裸線(xian)經(jing)退火軟化(hua)后(hou),再經(jing)過多次涂漆(qi),烘(hong)焙而成。但(dan)要生產出(chu)既符合標(biao)準要求,又滿足(zu)客戶要求的產品(pin)并不容(rong)易,它受原材料質量(liang),工藝參數(shu),生產設備(bei)(bei),環境等因(yin)(yin)素影響,因(yin)(yin)此,各種(zhong)(zhong)漆(qi)包(bao)線(xian)的質量(liang)特性各不相同,但(dan)都(dou)具備(bei)(bei)機械性能(neng)(neng)(neng),化(hua)學性能(neng)(neng)(neng),電性能(neng)(neng)(neng),熱性能(neng)(neng)(neng)四大(da)性能(neng)(neng)(neng)。
1、擠包(bao)線:由橡(xiang)膠(jiao)、塑料(liao)、鉛、鋁(lv)等材(cai)料(liao)包(bao)覆而成。
2、縱包(bao)線:由(you)橡皮、皺紋(wen)鋁帶材料包(bao)覆(fu)而成。
3、繞(rao)包線:由帶狀(zhuang)的(de)紙(zhi)帶、云母(mu)帶、無堿玻璃纖維帶、無紡布、塑(su)料(liao)帶等,線狀(zhuang)的(de)棉紗、絲(si)等纖維材(cai)料(liao)包覆而成。
三、絕緣繞包是什么
絕緣繞(rao)(rao)(rao)包(bao)(bao)(bao)工(gong)藝是該繞(rao)(rao)(rao)包(bao)(bao)(bao)線的(de)(de)(de)關鍵(jian)加工(gong)工(gong)序。包(bao)(bao)(bao)薄膜(mo)(mo)(mo)(mo)寬度(du)(du)和(he)厚(hou)度(du)(du)、搭(da)蓋率(lv)、繞(rao)(rao)(rao)包(bao)(bao)(bao)節距(ju)、繞(rao)(rao)(rao)包(bao)(bao)(bao)角(jiao)度(du)(du)之間必(bi)須(xu)實現完美(mei)配比(bi),同時在結構設(she)計時必(bi)須(xu)考慮薄膜(mo)(mo)(mo)(mo)的(de)(de)(de)拉伸。在繞(rao)(rao)(rao)包(bao)(bao)(bao)過程中,由于張(zhang)力的(de)(de)(de)作(zuo)用,實際包(bao)(bao)(bao)到導(dao)線上(shang)面(mian)的(de)(de)(de)薄膜(mo)(mo)(mo)(mo)寬度(du)(du)要(yao)(yao)比(bi)薄膜(mo)(mo)(mo)(mo)本身寬度(du)(du)窄,為保證產品(pin)搭(da)蓋率(lv)均(jun)勻、穩定,必(bi)須(xu)考慮繞(rao)(rao)(rao)包(bao)(bao)(bao)薄膜(mo)(mo)(mo)(mo)的(de)(de)(de)拉伸效(xiao)果。此外(wai),繞(rao)(rao)(rao)包(bao)(bao)(bao)張(zhang)力對產品(pin)表(biao)面(mian)的(de)(de)(de)密實程度(du)(du)、耐磨性、耐干濕電(dian)弧試(shi)驗等均(jun)有重要(yao)(yao)影響。按照美(mei)軍標SAEAS22759的(de)(de)(de)要(yao)(yao)求,該新型(xing)航空用復(fu)合絕緣繞(rao)(rao)(rao)包(bao)(bao)(bao)線繞(rao)(rao)(rao)包(bao)(bao)(bao)搭(da)蓋率(lv)應為50.4%~54.0%,但在實際生產時要(yao)(yao)求則更高,一般(ban)應控(kong)制(zhi)在52%±0.5%范圍內。