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。

不需稀料，施(shi)(shi)(shi)工(gong)(gong)對環(huan)境對人體無毒(du)害；涂層外觀質(zhi)量(liang)優異(yi)，附(fu)著力及機械強度(du)強；噴涂施(shi)(shi)(shi)工(gong)(gong)固化(hua)時間短；涂層耐腐耐磨(mo)能(neng)力高出很多；不需底漆(qi)；施(shi)(shi)(shi)工(gong)(gong)簡便，對工(gong)(gong)人技術要求低；成本(ben)低于噴漆(qi)工(gong)(gong)藝；有(you)些(xie)施(shi)(shi)(shi)工(gong)(gong)場合(he)已(yi)經明確(que)提出使用靜(jing)電噴塑工(gong)(gong)藝處理；靜(jing)電噴粉(fen)噴涂過程中不會(hui)出現噴漆(qi)工(gong)(gong)藝中常見的流淌現象。

是(shi)(shi)利用電(dian)(dian)(dian)(dian)暈(yun)放電(dian)(dian)(dian)(dian)現象使(shi)(shi)(shi)粉(fen)(fen)(fen)末(mo)涂料吸附(fu)在(zai)電(dian)(dian)(dian)(dian)纜橋架上的。其(qi)過(guo)程是(shi)(shi)這樣的：粉(fen)(fen)(fen)末(mo)涂料由供粉(fen)(fen)(fen)系統借壓縮空氣氣體(ti)送入(ru)噴(pen)槍，在(zai)噴(pen)槍前(qian)端加有高壓靜電(dian)(dian)(dian)(dian)發生器(qi)產生的高壓，由于(yu)(yu)電(dian)(dian)(dian)(dian)暈(yun)放電(dian)(dian)(dian)(dian)，在(zai)其(qi)附(fu)近產生密(mi)集的電(dian)(dian)(dian)(dian)荷，粉(fen)(fen)(fen)末(mo)由槍嘴噴(pen)出時，形(xing)成帶電(dian)(dian)(dian)(dian)涂料粒(li)子，它(ta)受(shou)靜電(dian)(dian)(dian)(dian)力的作用，被(bei)吸到與其(qi)相反的工件上去，隨著噴(pen)上的粉(fen)(fen)(fen)末(mo)增多，電(dian)(dian)(dian)(dian)荷積聚(ju)也越多，當達到一定厚(hou)度(du)時，由于(yu)(yu)產生靜電(dian)(dian)(dian)(dian)排斥作用，便不繼續吸附(fu)，從而使(shi)(shi)(shi)整個工件獲(huo)得一定厚(hou)度(du)的粉(fen)(fen)(fen)末(mo)涂層，然后經過(guo)熱使(shi)(shi)(shi)粉(fen)(fen)(fen)末(mo)熔融、流平(ping)、固化，即在(zai)工件表面形(xing)成堅(jian)硬的涂膜。