靜電噴槍工作原理是什么
靜(jing)電(dian)(dian)噴(pen)槍(qiang)是以(yi)接地(di)被涂(tu)(tu)物為(wei)(wei)正(zheng)電(dian)(dian)極(ji),涂(tu)(tu)料(liao)霧化裝(zhuang)裝(zhuang)置為(wei)(wei)負(fu)電(dian)(dian)極(ji),并將涂(tu)(tu)料(liao)霧化裝(zhuang)置帶高負(fu)電(dian)(dian)壓,在二極(ji)間制成靜(jing)電(dian)(dian)界,使(shi)霧化涂(tu)(tu)料(liao)粒(li)子帶負(fu)電(dian)(dian),使(shi)涂(tu)(tu)料(liao)有效地(di)被吸(xi)著于相(xiang)(xiang)反電(dian)(dian)極(ji)的(de)被物面上的(de)方法(fa)謂之靜(jing)電(dian)(dian)涂(tu)(tu)裝(zhuang)。那么為(wei)(wei)什么將被涂(tu)(tu)物作為(wei)(wei)正(zheng)極(ji)而(er)涂(tu)(tu)料(liao)霧化裝(zhuang)置作成負(fu)極(ji)呢?乃因(yin)此相(xiang)(xiang)反時,其轉移為(wei)(wei)火花放電(dian)(dian)較難(nan)不安全(quan)的(de)緣(yuan)故。
為(wei)(wei)了實(shi)施靜(jing)電(dian)涂(tu)裝(zhuang),被(bei)涂(tu)物(wu)的(de)接地乃(nai)是(shi)重(zhong)要必須條(tiao)件,那被(bei)涂(tu)物(wu)必須為(wei)(wei)電(dian)氣(qi)(qi)的(de)良導體(ti)。木材(cai)通常被(bei)認為(wei)(wei)電(dian)氣(qi)(qi)不良導體(ti),但其含水率為(wei)(wei)8%以上時,則可實(shi)行(xing)靜(jing)電(dian)涂(tu)裝(zhuang),而(er)經(jing)驗上也被(bei)確認。此乃(nai)通常的(de)靜(jing)電(dian)涂(tu)裝(zhuang),在(zai)正負二極間所(suo)(suo)流的(de)電(dian)流值為(wei)(wei)20~50微安培(MICRO-AMPERE),非常小,所(suo)(suo)以雖然是(shi)如木材(cai)般,電(dian)阻值較大的(de)物(wu)體(ti)也可以實(shi)施靜(jing)電(dian)涂(tu)裝(zhuang)。
怎么使用靜電噴槍
一、清洗
打(da)開(kai)油(you)(you)(you)(you)(you)泵(beng)氣壓(ya)使油(you)(you)(you)(you)(you)泵(beng)吸滿洗(xi)槍(qiang)水,清(qing)洗(xi)油(you)(you)(you)(you)(you)泵(beng)及(ji)噴嘴(zui),清(qing)洗(xi)油(you)(you)(you)(you)(you)泵(beng)時油(you)(you)(you)(you)(you)泵(beng)回流(liu)(liu)(liu)開(kai)關開(kai)三分之一(yi),使之循環。(水性(xing)(xing)靜電(dian)(dian)槍(qiang)回油(you)(you)(you)(you)(you)管,為(wei)(wei)靜電(dian)(dian)搶直接回油(you)(you)(you)(you)(you)),清(qing)洗(xi)干凈(jing)后拿起油(you)(you)(you)(you)(you)泵(beng)吸油(you)(you)(you)(you)(you)嘴(zui),打(da)開(kai)油(you)(you)(you)(you)(you)泵(beng)回流(liu)(liu)(liu)開(kai)關(水槍(qiang)靜電(dian)(dian)槍(qiang)直接回流(liu)(liu)(liu))排(pai)干凈(jing)洗(xi)槍(qiang)水,再(zai)放入油(you)(you)(you)(you)(you)漆桶內(nei),放入油(you)(you)(you)(you)(you)漆的同時將(jiang)油(you)(you)(you)(you)(you)漆攪拌均勻(yun),油(you)(you)(you)(you)(you)漆濃(nong)度一(yi)般為(wei)(wei)透明漆11S左右、有色漆13S左右,油(you)(you)(you)(you)(you)漆濃(nong)度不能過高,會影響(xiang)導(dao)電(dian)(dian)性(xing)(xing)及(ji)流(liu)(liu)(liu)平性(xing)(xing)。
二、噴槍調試
1、安(an)裝好噴嘴,打開(kai)氣壓,調節好噴嘴霧化弧度(du),噴涂(tu)過(guo)程中如(ru)需要調節霧化弧度(du),必須先將(jiang)噴槍槍頭靠近(jin)墻(qiang)壁,放掉槍上殘留的靜電(dian)再調節或者關(guan)閉電(dian)源(yuan)放掉殘留的靜電(dian)再進行調節
2、調節(jie)好打開靜(jing)(jing)電(dian)(dian)箱電(dian)(dian)源(yuan)開關,正常(chang)使用(yong)靜(jing)(jing)電(dian)(dian)搶靜(jing)(jing)電(dian)(dian)范(fan)圍(wei)調整(zheng)在(zai)(50-70V)再(zai)觀察靜(jing)(jing)電(dian)(dian)箱上顯(xian)示位置,是否在(zai)參(can)考范(fan)圍(wei)內
3、噴涂時(shi)根據工(gong)件平面(mian)大(da)小確定噴槍與工(gong)件距(ju)離,小五金一般為(5-8公(gong)分左右(you)),大(da)五金則距(ju)離可(ke)適當拉遠些(一般控制在(zai)8-12公(gong)分左右(you))
三、啟動涂料供給裝置
將控制箱(xiang)的電源開關扳到(dao)ON位(wei)置,扣動扳機(ji),紅燈點亮時,顯示噴槍(qiang)(qiang)前端(duan)已有高壓電輸出(chu)。啟動涂(tu)料(liao)供給裝(zhuang)置,將涂(tu)料(liao)送至噴槍(qiang)(qiang),將空氣調(diao)壓閥(fa)調(diao)為(wei)低(di)壓(1-3kgf/cm2左右(you)(you)),泵(beng)(beng)回轉,涂(tu)料(liao)吸入。用裝(zhuang)在泵(beng)(beng)的涂(tu)料(liao)出(chu)入口處的涂(tu)料(liao)調(diao)壓器(qi)將泵(beng)(beng)壓調(diao)到(dao)0.5~2kgf/cm2左右(you)(you)。
四、噴撒涂料
將霧化空氣(qi)(qi)壓調(diao)為(wei)0kgf/cm2,不要(yao)噴(pen)(pen)出(chu)空氣(qi)(qi),扣動扳機,直到噴(pen)(pen)槍噴(pen)(pen)出(chu)涂(tu)料(liao),涂(tu)料(liao)軟管(guan)內如有殘留空氣(qi)(qi),涂(tu)料(liao)噴(pen)(pen)出(chu)時(shi)會呈斷斷續續的狀(zhuang)態,所以一直噴(pen)(pen)到無空氣(qi)(qi)為(wei)止(zhi)。涂(tu)料(liao)噴(pen)(pen)出(chu)量調(diao)節噴(pen)(pen)槍后(hou)面(mian)的涂(tu)料(liao)調(diao)節器(qi),向(xiang)左旋(xuan)(xuan)轉(zhuan)噴(pen)(pen)出(chu)量增加(jia),向(xiang)右旋(xuan)(xuan)轉(zhuan)到頭(tou)噴(pen)(pen)出(chu)停止(zhi)。在(zai)休(xiu)息時(shi)將涂(tu)料(liao)調(diao)節器(qi)向(xiang)左旋(xuan)(xuan)緊使不能噴(pen)(pen)出(chu)或降低涂(tu)料(liao)輸送的壓力。
申明:以上方法源于程序系統索引或網民分享提供,僅供您參考使用,不代表本網站的研究觀點,證明有效,請注意甄別內容來源的真實性和權威性。