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(xu)稀料，施工(gong)(gong)對(dui)環境(jing)對(dui)人體無毒害；涂(tu)(tu)層外觀質量優異，附著力及機械強度強；噴涂(tu)(tu)施工(gong)(gong)固化(hua)時間短；涂(tu)(tu)層耐腐耐磨能力高出很(hen)多；不(bu)需(xu)底漆(qi)(qi)；施工(gong)(gong)簡便(bian)，對(dui)工(gong)(gong)人技術要求低；成本低于噴漆(qi)(qi)工(gong)(gong)藝；有(you)些施工(gong)(gong)場(chang)合已(yi)經明(ming)確提出使用靜電噴塑工(gong)(gong)藝處理(li)；靜電噴粉噴涂(tu)(tu)過程中不(bu)會出現(xian)噴漆(qi)(qi)工(gong)(gong)藝中常見的流淌現(xian)象。

是利用電(dian)(dian)(dian)暈放(fang)電(dian)(dian)(dian)現象(xiang)使(shi)粉(fen)(fen)末涂料吸附在電(dian)(dian)(dian)纜(lan)橋架上(shang)的。其過(guo)程是這樣的：粉(fen)(fen)末涂料由(you)(you)供粉(fen)(fen)系統借(jie)壓(ya)縮空氣氣體送入噴槍(qiang)，在噴槍(qiang)前端加有高(gao)壓(ya)靜(jing)電(dian)(dian)(dian)發生器產(chan)生的高(gao)壓(ya)，由(you)(you)于電(dian)(dian)(dian)暈放(fang)電(dian)(dian)(dian)，在其附近產(chan)生密(mi)集(ji)的電(dian)(dian)(dian)荷，粉(fen)(fen)末由(you)(you)槍(qiang)嘴(zui)噴出(chu)時(shi)，形成帶電(dian)(dian)(dian)涂料粒子，它受靜(jing)電(dian)(dian)(dian)力的作用，被吸到(dao)與其相反的工(gong)件上(shang)去(qu)，隨著噴上(shang)的粉(fen)(fen)末增多，電(dian)(dian)(dian)荷積聚(ju)也(ye)越多，當達(da)到(dao)一定厚度時(shi)，由(you)(you)于產(chan)生靜(jing)電(dian)(dian)(dian)排斥作用，便不(bu)繼續(xu)吸附，從而(er)使(shi)整個工(gong)件獲得一定厚度的粉(fen)(fen)末涂層，然后(hou)經過(guo)熱使(shi)粉(fen)(fen)末熔(rong)融、流平、固化，即(ji)在工(gong)件表面形成堅(jian)硬的涂膜(mo)。