自(zi)動靜電(dian)(dian)(dian)(dian)噴涂(tu)(tu)機的(de)(de)原理(li)是油漆(qi)(qi)(qi)通過高(gao)(gao)速旋轉的(de)(de)旋 杯(bei)邊沿和中心甩出，在整形(xing)空氣和高(gao)(gao)電(dian)(dian)(dian)(dian)壓(ya)(ya)的(de)(de)作用下(xia)形(xing) 成(cheng)錐狀(zhuang)霧化(hua)物，車(che)(che)身接(jie)地，而油漆(qi)(qi)(qi)顆粒帶上(shang)靜電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)荷， 在霧化(hua)器與車(che)(che)身之(zhi)間(jian)的(de)(de)靜電(dian)(dian)(dian)(dian)場作用下(xia)，油漆(qi)(qi)(qi)顆粒均勻 吸(xi)附(fu)在車(che)(che)身表面,形(xing)成(cheng)均勻的(de)(de)薄膜。高(gao)(gao)電(dian)(dian)(dian)(dian)壓(ya)(ya)值(zhi)的(de)(de)升高(gao)(gao)會(hui) 加(jia)強(qiang)靜電(dian)(dian)(dian)(dian)場的(de)(de)電(dian)(dian)(dian)(dian)場力，使涂(tu)(tu)料的(de)(de)上(shang)漆(qi)(qi)(qi)率增加(jia)，膜層增厚，但是高(gao)(gao)電(dian)(dian)(dian)(dian)壓(ya)(ya)值(zhi)不是越高(gao)(gao)越好(hao)，電(dian)(dian)(dian)(dian)壓(ya)(ya)設定過高(gao)(gao)的(de)(de)高(gao)(gao)電(dian)(dian)(dian)(dian) 壓(ya)(ya)時(shi)，噴涂(tu)(tu)時(shi)會(hui)產生火花(hua)放電(dian)(dian)(dian)(dian)，同(tong)時(shi)在車(che)(che)身的(de)(de)折角、邊 緣部位(wei)，容易(yi)出現流掛(gua)、氣泡等陷。

　　當高壓(ya)值(zhi)過(guo)低(di)時， 會(hui)在(zai)噴涂過(guo)程中導致巨大的(de)漆(qi)(qi)流回流現象，車身表面會(hui)因此出現明顯的(de)渦流，覆蓋到車身表面的(de)油漆(qi)(qi)過(guo)少， 導致上漆(qi)(qi)率過(guo)低(di)。高電壓(ya)值(zhi)一般設置在(zai)50~80V范 圍內。