噴塑橋架

噴塑電纜橋架是將塑料粉末噴涂在電纜橋架上的一種表面處理方法。

不(bu)需稀料，施(shi)工(gong)對環境對人(ren)體無毒害；涂(tu)層(ceng)外(wai)觀(guan)質量優(you)異(yi)，附著力及(ji)機械強度強；噴(pen)(pen)(pen)涂(tu)施(shi)工(gong)固化(hua)時間短；涂(tu)層(ceng)耐(nai)腐(fu)耐(nai)磨能(neng)力高出(chu)很多；不(bu)需底漆；施(shi)工(gong)簡便，對工(gong)人(ren)技術要(yao)求(qiu)低；成本(ben)低于噴(pen)(pen)(pen)漆工(gong)藝；有些施(shi)工(gong)場合(he)已(yi)經明確提出(chu)使用靜電(dian)噴(pen)(pen)(pen)塑工(gong)藝處理；靜電(dian)噴(pen)(pen)(pen)粉噴(pen)(pen)(pen)涂(tu)過程中不(bu)會出(chu)現噴(pen)(pen)(pen)漆工(gong)藝中常見的流淌現象(xiang)。

是利用電(dian)(dian)(dian)(dian)(dian)(dian)暈放電(dian)(dian)(dian)(dian)(dian)(dian)現象(xiang)使粉(fen)末(mo)(mo)涂料(liao)吸附(fu)在電(dian)(dian)(dian)(dian)(dian)(dian)纜橋架上的(de)(de)。其(qi)過程是這樣的(de)(de)：粉(fen)末(mo)(mo)涂料(liao)由供粉(fen)系統借壓縮空氣氣體(ti)送入噴槍(qiang)(qiang)，在噴槍(qiang)(qiang)前端加(jia)有高壓靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)發(fa)生(sheng)(sheng)器(qi)產(chan)生(sheng)(sheng)的(de)(de)高壓，由于電(dian)(dian)(dian)(dian)(dian)(dian)暈放電(dian)(dian)(dian)(dian)(dian)(dian)，在其(qi)附(fu)近產(chan)生(sheng)(sheng)密(mi)集的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)荷，粉(fen)末(mo)(mo)由槍(qiang)(qiang)嘴噴出時，形(xing)成帶電(dian)(dian)(dian)(dian)(dian)(dian)涂料(liao)粒子，它受靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)力的(de)(de)作(zuo)(zuo)用，被吸到與其(qi)相反的(de)(de)工件上去(qu)，隨(sui)著噴上的(de)(de)粉(fen)末(mo)(mo)增多，電(dian)(dian)(dian)(dian)(dian)(dian)荷積聚(ju)也越多，當達到一定(ding)厚度(du)時，由于產(chan)生(sheng)(sheng)靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)排斥作(zuo)(zuo)用，便不繼續吸附(fu)，從而使整個工件獲得(de)一定(ding)厚度(du)的(de)(de)粉(fen)末(mo)(mo)涂層，然(ran)后經過熱(re)使粉(fen)末(mo)(mo)熔融、流平、固(gu)化，即在工件表面形(xing)成堅硬的(de)(de)涂膜。