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)(bu)需稀料，施(shi)工(gong)(gong)對環境對人(ren)(ren)體無毒(du)害(hai)；涂(tu)(tu)層外(wai)觀質量優異(yi)，附著力及機械(xie)強(qiang)度強(qiang)；噴(pen)涂(tu)(tu)施(shi)工(gong)(gong)固化時間短；涂(tu)(tu)層耐腐耐磨能力高出很多；不(bu)(bu)需底漆(qi)；施(shi)工(gong)(gong)簡(jian)便，對工(gong)(gong)人(ren)(ren)技術要求(qiu)低；成本低于噴(pen)漆(qi)工(gong)(gong)藝；有(you)些(xie)施(shi)工(gong)(gong)場合(he)已(yi)經明確(que)提(ti)出使用靜(jing)電(dian)噴(pen)塑工(gong)(gong)藝處理；靜(jing)電(dian)噴(pen)粉噴(pen)涂(tu)(tu)過(guo)程中(zhong)不(bu)(bu)會出現噴(pen)漆(qi)工(gong)(gong)藝中(zhong)常見(jian)的流淌現象。

是(shi)利(li)用(yong)電(dian)(dian)暈放(fang)電(dian)(dian)現象使粉(fen)(fen)末(mo)涂(tu)(tu)料(liao)吸(xi)附在電(dian)(dian)纜橋(qiao)架上的(de)(de)。其過程是(shi)這樣的(de)(de)：粉(fen)(fen)末(mo)涂(tu)(tu)料(liao)由(you)供粉(fen)(fen)系統(tong)借壓縮(suo)空氣氣體送(song)入噴(pen)槍(qiang)，在噴(pen)槍(qiang)前端(duan)加有高(gao)壓靜(jing)(jing)(jing)電(dian)(dian)發生器產生的(de)(de)高(gao)壓，由(you)于電(dian)(dian)暈放(fang)電(dian)(dian)，在其附近(jin)產生密集(ji)的(de)(de)電(dian)(dian)荷(he)，粉(fen)(fen)末(mo)由(you)槍(qiang)嘴噴(pen)出時，形(xing)成(cheng)(cheng)帶電(dian)(dian)涂(tu)(tu)料(liao)粒子(zi)，它受靜(jing)(jing)(jing)電(dian)(dian)力的(de)(de)作用(yong)，被吸(xi)到與其相反(fan)的(de)(de)工件上去，隨著噴(pen)上的(de)(de)粉(fen)(fen)末(mo)增多，電(dian)(dian)荷(he)積聚也越(yue)多，當達到一(yi)定厚(hou)度(du)時，由(you)于產生靜(jing)(jing)(jing)電(dian)(dian)排斥(chi)作用(yong)，便(bian)不繼(ji)續吸(xi)附，從而使整個工件獲得一(yi)定厚(hou)度(du)的(de)(de)粉(fen)(fen)末(mo)涂(tu)(tu)層，然(ran)后(hou)經(jing)過熱使粉(fen)(fen)末(mo)熔融、流平、固化，即(ji)在工件表面形(xing)成(cheng)(cheng)堅硬的(de)(de)涂(tu)(tu)膜。