靜電噴槍工作原理是什么

靜電(dian)噴槍是以接(jie)地被(bei)涂物為(wei)正電(dian)極(ji)，涂料(liao)(liao)霧(wu)(wu)化(hua)(hua)裝(zhuang)(zhuang)裝(zhuang)(zhuang)置(zhi)為(wei)負電(dian)極(ji)，并(bing)將涂料(liao)(liao)霧(wu)(wu)化(hua)(hua)裝(zhuang)(zhuang)置(zhi)帶高負電(dian)壓，在二(er)極(ji)間制(zhi)成靜電(dian)界，使(shi)霧(wu)(wu)化(hua)(hua)涂料(liao)(liao)粒子帶負電(dian)，使(shi)涂料(liao)(liao)有效地被(bei)吸著于相(xiang)反(fan)電(dian)極(ji)的(de)被(bei)物面(mian)上(shang)的(de)方(fang)法(fa)謂之靜電(dian)涂裝(zhuang)(zhuang)。那么為(wei)什么將被(bei)涂物作(zuo)為(wei)正極(ji)而涂料(liao)(liao)霧(wu)(wu)化(hua)(hua)裝(zhuang)(zhuang)置(zhi)作(zuo)成負極(ji)呢?乃因此相(xiang)反(fan)時，其轉移為(wei)火花放電(dian)較難(nan)不安全的(de)緣故。

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為(wei)了實(shi)施(shi)靜電(dian)(dian)涂裝，被涂物(wu)(wu)的接地乃是重要(yao)必須條件(jian)，那被涂物(wu)(wu)必須為(wei)電(dian)(dian)氣(qi)的良導(dao)體(ti)。木(mu)材(cai)通常(chang)被認為(wei)電(dian)(dian)氣(qi)不良導(dao)體(ti)，但其含水率(lv)為(wei)8%以(yi)上時(shi)，則可實(shi)行靜電(dian)(dian)涂裝，而(er)經驗上也被確(que)認。此(ci)乃通常(chang)的靜電(dian)(dian)涂裝，在正負(fu)二極間所(suo)流的電(dian)(dian)流值為(wei)20~50微安培（MICRO-AMPERE），非常(chang)小，所(suo)以(yi)雖然是如木(mu)材(cai)般，電(dian)(dian)阻值較大(da)的物(wu)(wu)體(ti)也可以(yi)實(shi)施(shi)靜電(dian)(dian)涂裝。

怎么使用靜電噴槍

一、清洗

打(da)開(kai)(kai)油(you)(you)(you)(you)泵(beng)氣壓使油(you)(you)(you)(you)泵(beng)吸滿洗(xi)槍水(shui)，清洗(xi)油(you)(you)(you)(you)泵(beng)及(ji)噴(pen)嘴，清洗(xi)油(you)(you)(you)(you)泵(beng)時(shi)油(you)(you)(you)(you)泵(beng)回流開(kai)(kai)關開(kai)(kai)三(san)分之一(yi)，使之循環。（水(shui)性靜(jing)電(dian)槍回油(you)(you)(you)(you)管，為靜(jing)電(dian)搶直(zhi)接回油(you)(you)(you)(you)），清洗(xi)干凈后拿起油(you)(you)(you)(you)泵(beng)吸油(you)(you)(you)(you)嘴，打(da)開(kai)(kai)油(you)(you)(you)(you)泵(beng)回流開(kai)(kai)關（水(shui)槍靜(jing)電(dian)槍直(zhi)接回流）排干凈洗(xi)槍水(shui)，再放入油(you)(you)(you)(you)漆(qi)(qi)(qi)桶內，放入油(you)(you)(you)(you)漆(qi)(qi)(qi)的同時(shi)將油(you)(you)(you)(you)漆(qi)(qi)(qi)攪拌均勻，油(you)(you)(you)(you)漆(qi)(qi)(qi)濃度一(yi)般為透明漆(qi)(qi)(qi)11S左右、有(you)色漆(qi)(qi)(qi)13S左右，油(you)(you)(you)(you)漆(qi)(qi)(qi)濃度不能過高，會影響(xiang)導(dao)電(dian)性及(ji)流平性。

二、噴槍調試

1、安裝(zhuang)好噴嘴，打開氣壓，調節(jie)好噴嘴霧(wu)化弧度，噴涂(tu)過(guo)程中(zhong)如(ru)需(xu)要調節(jie)霧(wu)化弧度，必須(xu)先(xian)將噴槍槍頭靠近墻壁，放掉槍上殘留(liu)的靜電(dian)再(zai)(zai)調節(jie)或(huo)者關閉(bi)電(dian)源放掉殘留(liu)的靜電(dian)再(zai)(zai)進行調節(jie)

2、調(diao)節好(hao)打(da)開靜(jing)(jing)電(dian)箱電(dian)源(yuan)開關，正常使用靜(jing)(jing)電(dian)搶靜(jing)(jing)電(dian)范圍調(diao)整在（50-70V）再觀(guan)察靜(jing)(jing)電(dian)箱上顯示位置，是(shi)否在參(can)考范圍內

3、噴(pen)(pen)涂時根據工(gong)件(jian)平(ping)面大小確定(ding)噴(pen)(pen)槍與(yu)工(gong)件(jian)距離(li)，小五(wu)金(jin)(jin)一(yi)般(ban)為（5-8公(gong)分左右(you)），大五(wu)金(jin)(jin)則距離(li)可適當拉遠些（一(yi)般(ban)控制(zhi)在8-12公(gong)分左右(you)）

三、啟動涂料供給裝置

將控制箱的(de)電(dian)源(yuan)開(kai)關扳(ban)(ban)到ON位(wei)置，扣動扳(ban)(ban)機，紅燈點亮時，顯(xian)示(shi)噴槍前(qian)端已(yi)有(you)高壓電(dian)輸(shu)出(chu)。啟動涂(tu)料(liao)(liao)供給裝置，將涂(tu)料(liao)(liao)送至噴槍，將空氣調(diao)壓閥(fa)調(diao)為低壓（1-3kgf/cm2左(zuo)右），泵(beng)回轉，涂(tu)料(liao)(liao)吸(xi)入。用(yong)裝在泵(beng)的(de)涂(tu)料(liao)(liao)出(chu)入口(kou)處的(de)涂(tu)料(liao)(liao)調(diao)壓器將泵(beng)壓調(diao)到0.5~2kgf/cm2左(zuo)右。

四、噴撒涂料

將霧化空(kong)(kong)氣壓調(diao)(diao)為0kgf/cm2，不要(yao)噴(pen)(pen)出(chu)空(kong)(kong)氣，扣動扳機，直(zhi)(zhi)到(dao)噴(pen)(pen)槍噴(pen)(pen)出(chu)涂(tu)(tu)料，涂(tu)(tu)料軟管內如有(you)殘留空(kong)(kong)氣，涂(tu)(tu)料噴(pen)(pen)出(chu)時會呈斷斷續續的(de)狀態，所以一直(zhi)(zhi)噴(pen)(pen)到(dao)無空(kong)(kong)氣為止。涂(tu)(tu)料噴(pen)(pen)出(chu)量(liang)(liang)調(diao)(diao)節(jie)噴(pen)(pen)槍后面(mian)的(de)涂(tu)(tu)料調(diao)(diao)節(jie)器，向左(zuo)旋轉(zhuan)噴(pen)(pen)出(chu)量(liang)(liang)增加，向右旋轉(zhuan)到(dao)頭噴(pen)(pen)出(chu)停止。在休息時將涂(tu)(tu)料調(diao)(diao)節(jie)器向左(zuo)旋緊使不能噴(pen)(pen)出(chu)或(huo)降低涂(tu)(tu)料輸送(song)的(de)壓力(li)。