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發布(bu)時間:2021-12-17 11:54:31 人氣(qi):98750 來源:
在研磨過程中,閥門制造的密封面是一個常用的整理方法,可以使蓬溪機械密封摩擦端面尺寸精度(du)提高(gao),閥門的(de)密封面,幾何粗糙(cao)度(du)和表面粗糙(cao)度(du),但不能提高(gao)密封表面的(de)相互位(wei)置精度(du)。
蓬溪機械密封面研磨包括五個方面的基本原理:研磨運動、研磨工藝、研磨速度、研磨壓力和研磨余量。研磨過程好一起研究密封面,隨著對蓬溪機械密封研(yan)(yan)究(jiu)的(de)(de)(de)(de)復雜面(mian)(mian),之間(jian)的(de)(de)(de)(de)表(biao)(biao)(biao)(biao)面(mian)(mian)和(he)(he)密(mi)(mi)封(feng)(feng)磨(mo)料(liao)(liao)磨(mo)具研(yan)(yan)究(jiu)相(xiang)(xiang)對運動(dong)(dong)時,密(mi)(mi)封(feng)(feng)圈表(biao)(biao)(biao)(biao)面(mian)(mian),磨(mo)料(liao)(liao)磨(mo)具研(yan)(yan)究(jiu)部(bu)分(fen)和(he)(he)密(mi)(mi)封(feng)(feng)面(mian)(mian)之間(jian)的(de)(de)(de)(de)滑(hua)動(dong)(dong)或滾(gun)動(dong)(dong),切斷密(mi)(mi)封(feng)(feng)圈上(shang)薄薄的(de)(de)(de)(de)一層金屬表(biao)(biao)(biao)(biao)面(mian)(mian)。密(mi)(mi)封(feng)(feng)凸峰部(bu)分(fen)的(de)(de)(de)(de)圈,表(biao)(biao)(biao)(biao)面(mian)(mian)研(yan)(yan)磨(mo),然后逐(zhu)漸達到所要求(qiu)的(de)(de)(de)(de)幾何(he)形(xing)狀。不(bu)僅是(shi)金屬磨(mo)料(liao)(liao)的(de)(de)(de)(de)研(yan)(yan)磨(mo)加(jia)工,以及化學作用(yong)。研(yan)(yan)磨(mo)油可使加(jia)工表(biao)(biao)(biao)(biao)面(mian)(mian)形(xing)成的(de)(de)(de)(de)氧化膜,從而加(jia)快研(yan)(yan)磨(mo)過程(cheng)。地(di)面(mian)(mian)運動(dong)(dong)相(xiang)(xiang)對運動(dong)(dong)的(de)(de)(de)(de)表(biao)(biao)(biao)(biao)面(mian)(mian)和(he)(he)密(mi)(mi)封(feng)(feng)圈密(mi)(mi)封(feng)(feng)圈的(de)(de)(de)(de)研(yan)(yan)究(jiu),對每個(ge)點的(de)(de)(de)(de)表(biao)(biao)(biao)(biao)面(mian)(mian)上(shang)的(de)(de)(de)(de)道路(lu)和(he)(he)相(xiang)(xiang)對滑(hua)動(dong)(dong)的(de)(de)(de)(de)研(yan)(yan)究(jiu)應(ying)該是(shi)一樣的(de)(de)(de)(de)。和(he)(he)相(xiang)(xiang)對運動(dong)(dong)方向改(gai)變(bian)。改(gai)變(bian)密(mi)(mi)封(feng)(feng)環內(nei)的(de)(de)(de)(de)每個(ge)粒子的(de)(de)(de)(de)表(biao)(biao)(biao)(biao)面(mian)(mian)上(shang)運動(dong)(dong)的(de)(de)(de)(de)方向不(bu)會重復他們(men)的(de)(de)(de)(de)軌跡,以避免(mian)磨(mo)損明顯增加(jia)了密(mi)(mi)封(feng)(feng)環的(de)(de)(de)(de)表(biao)(biao)(biao)(biao)面(mian)(mian)粗(cu)糙(cao)度。此外(wai),運動(dong)(dong)方向的(de)(de)(de)(de)改(gai)變(bian)不(bu)能使磨(mo)粒分(fen)布比較均(jun)勻(yun),且(qie)均(jun)勻(yun)切斷金屬密(mi)(mi)封(feng)(feng)環的(de)(de)(de)(de)表(biao)(biao)(biao)(biao)面(mian)(mian)。
蓬溪機械密封研(yan)(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)是利用(yong)(yong)(yong)涂敷或者(zhe)壓(ya)(ya)(ya)嵌(qian)游離磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)粒(li)(li)(li)(li)與(yu)(yu)研(yan)(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)劑的(de)(de)(de)(de)混合物(wu)(wu),在(zai)(zai)一定(ding)剛性(xing)的(de)(de)(de)(de)軟質(zhi)研(yan)(yan)(yan)(yan)(yan)(yan)(yan)具(ju)上(shang),通過(guo)研(yan)(yan)(yan)(yan)(yan)(yan)(yan)具(ju)與(yu)(yu)工(gong)(gong)(gong)件(jian)向磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)料(liao)施加(jia)一定(ding)壓(ya)(ya)(ya)力,磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)料(liao)滾(gun)動(dong)(dong)與(yu)(yu)滑(hua)動(dong)(dong),從被(bei)研(yan)(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)工(gong)(gong)(gong)件(jian)上(shang)去除極(ji)薄的(de)(de)(de)(de)余量(liang)(liang),以(yi)提高工(gong)(gong)(gong)件(jian)的(de)(de)(de)(de)精度和降(jiang)低表面(mian)(mian)(mian)粗糙度值得加(jia)工(gong)(gong)(gong)方法(fa)。按研(yan)(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)時有無研(yan)(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)液可分為干(gan)研(yan)(yan)(yan)(yan)(yan)(yan)(yan)與(yu)(yu)濕研(yan)(yan)(yan)(yan)(yan)(yan)(yan)。研(yan)(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)過(guo)程中(zhong),在(zai)(zai)研(yan)(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)壓(ya)(ya)(ya)力下(xia),眾多的(de)(de)(de)(de)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)料(liao)微(wei)粒(li)(li)(li)(li)進行微(wei)量(liang)(liang)切削。對工(gong)(gong)(gong)件(jian)表面(mian)(mian)(mian)進行擠壓(ya)(ya)(ya)、刻劃、滑(hua)擦;在(zai)(zai)研(yan)(yan)(yan)(yan)(yan)(yan)(yan)具(ju)運動(dong)(dong)中(zhong)當研(yan)(yan)(yan)(yan)(yan)(yan)(yan)具(ju)壓(ya)(ya)(ya)嵌(qian)的(de)(de)(de)(de)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)粒(li)(li)(li)(li)脫落后及液中(zhong)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)粒(li)(li)(li)(li)相對工(gong)(gong)(gong)件(jian)發生滾(gun)動(dong)(dong)。研(yan)(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)過(guo)程中(zhong),在(zai)(zai)研(yan)(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)壓(ya)(ya)(ya)力的(de)(de)(de)(de)作用(yong)(yong)(yong)下(xia),眾多磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)粒(li)(li)(li)(li)進行微(wei)量(liang)(liang)切削,同時被(bei)研(yan)(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)表面(mian)(mian)(mian)發生微(wei)小(xiao)起伏(fu)(fu)的(de)(de)(de)(de)塑(su)性(xing)變形(xing),并且被(bei)加(jia)入(ru)的(de)(de)(de)(de)諸如(ru)硬脂酸、油酸、脂肪酸等(deng)活性(xing)物(wu)(wu)質(zhi)與(yu)(yu)被(bei)研(yan)(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)表面(mian)(mian)(mian)起化(hua)學作用(yong)(yong)(yong)。隨著(zhu)研(yan)(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)加(jia)工(gong)(gong)(gong)的(de)(de)(de)(de)進行,磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)具(ju)與(yu)(yu)工(gong)(gong)(gong)件(jian)表面(mian)(mian)(mian)間更趨(qu)貼近(jin),其間充(chong)滿(man)了(le)微(wei)屑與(yu)(yu)破碎磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)料(liao)的(de)(de)(de)(de)碎渣,堵(du)塞(sai)了(le)研(yan)(yan)(yan)(yan)(yan)(yan)(yan)具(ju)表面(mian)(mian)(mian),對工(gong)(gong)(gong)件(jian)表面(mian)(mian)(mian)起滑(hua)擦作用(yong)(yong)(yong)。所以(yi),研(yan)(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)加(jia)工(gong)(gong)(gong)的(de)(de)(de)(de)實質(zhi)是磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)粒(li)(li)(li)(li)的(de)(de)(de)(de)微(wei)量(liang)(liang)切削、研(yan)(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)表面(mian)(mian)(mian)微(wei)小(xiao)起伏(fu)(fu)的(de)(de)(de)(de)塑(su)性(xing)流動(dong)(dong)、表面(mian)(mian)(mian)活性(xing)物(wu)(wu)質(zhi)的(de)(de)(de)(de)化(hua)學作用(yong)(yong)(yong)及研(yan)(yan)(yan)(yan)(yan)(yan)(yan)具(ju)堵(du)塞(sai)物(wu)(wu)與(yu)(yu)工(gong)(gong)(gong)件(jian)表面(mian)(mian)(mian)滑(hua)擦作用(yong)(yong)(yong)的(de)(de)(de)(de)綜合結果。
為了不讓泵水通過軸與密封間隙泄漏,由出口冷凝泵或在鹽水中的母管引至密封水。給水泵是一種具有一定溫度、高溫的水通過泵軸或泵體金屬容器用蓬溪機械密封將熱(re)量傳給(gei)軸承,使軸承溫度升(sheng)高(gao)。為了(le)控制(zhi)傳熱(re),所以密封的水也起(qi)到(dao)冷卻作用。
蓬溪機械密封直接冷卻就是冷卻液體直接和密封端面接觸達到冷卻的目的。沖洗實際上也是直接冷卻的一種方式,沖洗方式中通過管路連接換熱器將冷卻后的沖洗液引入密封腔進行直接冷卻。還有一種直接冷卻就是在蓬溪機械密封低壓(ya)(ya)側(ce)(大氣)將(jiang)(jiang)清(qing)水、蒸(zheng)汽(qi)等冷(leng)(leng)卻流體直接引入密(mi)封(feng)端(duan)(duan)泄露處的(de)一(yi)種冷(leng)(leng)卻方式,也稱急(ji)冷(leng)(leng),急(ji)冷(leng)(leng)不僅冷(leng)(leng)卻*,還能將(jiang)(jiang)密(mi)封(feng)端(duan)(duan)面周圍(wei)的(de)雜質及泄露液帶走,急(ji)冷(leng)(leng)液其壓(ya)(ya)力比密(mi)封(feng)介質壓(ya)(ya)力低。急(ji)冷(leng)(leng)液應(ying)盡量(liang)采用軟水,以防止水垢(gou)產生破壞密(mi)封(feng)端(duan)(duan)面。當密(mi)封(feng)流體為易(yi)凝固、易(yi)結(jie)晶時(shi),可用蒸(zheng)汽(qi)、溶(rong)劑等防止流體凝結(jie)。