靜電噴槍工作原理是什么

靜(jing)電(dian)(dian)噴槍(qiang)是(shi)以接(jie)地(di)被(bei)涂(tu)(tu)物(wu)為正(zheng)電(dian)(dian)極(ji)，涂(tu)(tu)料(liao)霧化(hua)裝(zhuang)裝(zhuang)置(zhi)為負電(dian)(dian)極(ji)，并將涂(tu)(tu)料(liao)霧化(hua)裝(zhuang)置(zhi)帶(dai)(dai)高負電(dian)(dian)壓，在二極(ji)間制成(cheng)靜(jing)電(dian)(dian)界，使(shi)霧化(hua)涂(tu)(tu)料(liao)粒子帶(dai)(dai)負電(dian)(dian)，使(shi)涂(tu)(tu)料(liao)有效地(di)被(bei)吸著(zhu)于(yu)相反(fan)電(dian)(dian)極(ji)的被(bei)物(wu)面上的方法謂之(zhi)靜(jing)電(dian)(dian)涂(tu)(tu)裝(zhuang)。那么(me)為什(shen)么(me)將被(bei)涂(tu)(tu)物(wu)作為正(zheng)極(ji)而涂(tu)(tu)料(liao)霧化(hua)裝(zhuang)置(zhi)作成(cheng)負極(ji)呢(ni)?乃(nai)因此相反(fan)時，其(qi)轉移為火花放(fang)電(dian)(dian)較(jiao)難不(bu)安全的緣故。

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為了實施靜(jing)電(dian)(dian)(dian)(dian)涂(tu)裝(zhuang)(zhuang)，被(bei)涂(tu)物的接地(di)乃(nai)(nai)是重(zhong)要必(bi)須條件(jian)，那(nei)被(bei)涂(tu)物必(bi)須為電(dian)(dian)(dian)(dian)氣的良導(dao)體。木(mu)(mu)材通常被(bei)認為電(dian)(dian)(dian)(dian)氣不良導(dao)體，但其含水率為8%以上時，則可(ke)實行靜(jing)電(dian)(dian)(dian)(dian)涂(tu)裝(zhuang)(zhuang)，而經驗(yan)上也(ye)被(bei)確認。此乃(nai)(nai)通常的靜(jing)電(dian)(dian)(dian)(dian)涂(tu)裝(zhuang)(zhuang)，在正負二極間(jian)所流(liu)的電(dian)(dian)(dian)(dian)流(liu)值為20~50微安培（MICRO-AMPERE），非常小，所以雖然(ran)是如木(mu)(mu)材般，電(dian)(dian)(dian)(dian)阻(zu)值較大的物體也(ye)可(ke)以實施靜(jing)電(dian)(dian)(dian)(dian)涂(tu)裝(zhuang)(zhuang)。

怎么使用靜電噴槍

一、清洗

打開(kai)油(you)泵(beng)氣(qi)壓使(shi)(shi)油(you)泵(beng)吸滿洗(xi)槍(qiang)水(shui)，清洗(xi)油(you)泵(beng)及噴嘴，清洗(xi)油(you)泵(beng)時油(you)泵(beng)回流(liu)(liu)開(kai)關開(kai)三分之一(yi)，使(shi)(shi)之循(xun)環。（水(shui)性靜電(dian)(dian)槍(qiang)回油(you)管，為靜電(dian)(dian)搶直接(jie)回油(you)），清洗(xi)干凈后拿起油(you)泵(beng)吸油(you)嘴，打開(kai)油(you)泵(beng)回流(liu)(liu)開(kai)關（水(shui)槍(qiang)靜電(dian)(dian)槍(qiang)直接(jie)回流(liu)(liu)）排干凈洗(xi)槍(qiang)水(shui)，再(zai)放(fang)入油(you)漆(qi)桶內，放(fang)入油(you)漆(qi)的(de)同時將油(you)漆(qi)攪拌(ban)均勻(yun)，油(you)漆(qi)濃(nong)度(du)一(yi)般為透(tou)明漆(qi)11S左右(you)、有色漆(qi)13S左右(you)，油(you)漆(qi)濃(nong)度(du)不能過高，會影響導電(dian)(dian)性及流(liu)(liu)平性。

二、噴槍調試

1、安(an)裝好噴嘴，打(da)開氣壓(ya)，調(diao)(diao)節(jie)好噴嘴霧化弧度(du)，噴涂(tu)過程中如需要(yao)調(diao)(diao)節(jie)霧化弧度(du)，必(bi)須先(xian)將噴槍(qiang)槍(qiang)頭(tou)靠近(jin)墻壁(bi)，放(fang)掉槍(qiang)上殘留的靜電再調(diao)(diao)節(jie)或(huo)者(zhe)關閉電源放(fang)掉殘留的靜電再進行(xing)調(diao)(diao)節(jie)

2、調節好(hao)打開(kai)(kai)靜(jing)(jing)電(dian)(dian)(dian)箱(xiang)(xiang)電(dian)(dian)(dian)源開(kai)(kai)關，正常使用靜(jing)(jing)電(dian)(dian)(dian)搶靜(jing)(jing)電(dian)(dian)(dian)范圍(wei)調整(zheng)在（50-70V）再觀察靜(jing)(jing)電(dian)(dian)(dian)箱(xiang)(xiang)上顯示位置，是否(fou)在參考范圍(wei)內

3、噴(pen)涂(tu)時根據工件(jian)平面大(da)小(xiao)確定噴(pen)槍與工件(jian)距離，小(xiao)五金(jin)一般(ban)(ban)為(wei)（5-8公分左右），大(da)五金(jin)則距離可適當拉(la)遠些（一般(ban)(ban)控制(zhi)在8-12公分左右）

三、啟動涂料供給裝置

將(jiang)控制箱的(de)電(dian)源(yuan)開關扳到ON位置(zhi)，扣動(dong)扳機，紅燈點亮時，顯示噴槍前(qian)端已(yi)有高壓(ya)電(dian)輸出。啟動(dong)涂(tu)料(liao)供給裝(zhuang)置(zhi)，將(jiang)涂(tu)料(liao)送(song)至噴槍，將(jiang)空氣調(diao)壓(ya)閥(fa)調(diao)為低壓(ya)（1-3kgf/cm2左右），泵回(hui)轉，涂(tu)料(liao)吸入(ru)。用裝(zhuang)在泵的(de)涂(tu)料(liao)出入(ru)口(kou)處的(de)涂(tu)料(liao)調(diao)壓(ya)器將(jiang)泵壓(ya)調(diao)到0.5~2kgf/cm2左右。

四、噴撒涂料

將(jiang)(jiang)霧化空氣(qi)壓調(diao)(diao)為(wei)0kgf/cm2，不要噴(pen)(pen)(pen)出(chu)(chu)(chu)空氣(qi)，扣動(dong)扳機，直(zhi)(zhi)到噴(pen)(pen)(pen)槍噴(pen)(pen)(pen)出(chu)(chu)(chu)涂(tu)料(liao)(liao)，涂(tu)料(liao)(liao)軟管內如有殘留空氣(qi)，涂(tu)料(liao)(liao)噴(pen)(pen)(pen)出(chu)(chu)(chu)時(shi)會呈斷斷續(xu)續(xu)的狀態，所以一直(zhi)(zhi)噴(pen)(pen)(pen)到無(wu)空氣(qi)為(wei)止。涂(tu)料(liao)(liao)噴(pen)(pen)(pen)出(chu)(chu)(chu)量調(diao)(diao)節噴(pen)(pen)(pen)槍后面的涂(tu)料(liao)(liao)調(diao)(diao)節器，向左(zuo)旋轉(zhuan)噴(pen)(pen)(pen)出(chu)(chu)(chu)量增加，向右旋轉(zhuan)到頭噴(pen)(pen)(pen)出(chu)(chu)(chu)停止。在休(xiu)息時(shi)將(jiang)(jiang)涂(tu)料(liao)(liao)調(diao)(diao)節器向左(zuo)旋緊使不能(neng)噴(pen)(pen)(pen)出(chu)(chu)(chu)或降低涂(tu)料(liao)(liao)輸送的壓力。