在研磨過程中，閥門制造的密封面是一個常用的整理方法，可以使三道鎮機械密封摩擦端面(mian)尺寸精(jing)(jing)度(du)提高(gao)，閥門的密(mi)封面(mian)，幾何(he)粗(cu)糙(cao)度(du)和表(biao)面(mian)粗(cu)糙(cao)度(du)，但不能(neng)提高(gao)密(mi)封表(biao)面(mian)的相互位置精(jing)(jing)度(du)。

　　三道鎮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，隨著對三道鎮機械密封研(yan)(yan)究(jiu)(jiu)的(de)(de)(de)(de)(de)(de)(de)(de)復雜面(mian)(mian)(mian)(mian)(mian)，之間的(de)(de)(de)(de)(de)(de)(de)(de)表面(mian)(mian)(mian)(mian)(mian)和(he)密(mi)封(feng)(feng)(feng)(feng)磨(mo)料(liao)磨(mo)具研(yan)(yan)究(jiu)(jiu)相(xiang)(xiang)對(dui)(dui)(dui)運動(dong)(dong)時，密(mi)封(feng)(feng)(feng)(feng)圈(quan)表面(mian)(mian)(mian)(mian)(mian)，磨(mo)料(liao)磨(mo)具研(yan)(yan)究(jiu)(jiu)部分和(he)密(mi)封(feng)(feng)(feng)(feng)面(mian)(mian)(mian)(mian)(mian)之間的(de)(de)(de)(de)(de)(de)(de)(de)滑動(dong)(dong)或滾動(dong)(dong)，切(qie)斷(duan)密(mi)封(feng)(feng)(feng)(feng)圈(quan)上薄薄的(de)(de)(de)(de)(de)(de)(de)(de)一(yi)層金屬表面(mian)(mian)(mian)(mian)(mian)。密(mi)封(feng)(feng)(feng)(feng)凸峰(feng)部分的(de)(de)(de)(de)(de)(de)(de)(de)圈(quan)，表面(mian)(mian)(mian)(mian)(mian)研(yan)(yan)磨(mo)，然后逐漸(jian)達到所(suo)要求的(de)(de)(de)(de)(de)(de)(de)(de)幾何形狀。不(bu)僅是(shi)金屬磨(mo)料(liao)的(de)(de)(de)(de)(de)(de)(de)(de)研(yan)(yan)磨(mo)加工(gong)(gong)，以(yi)及化(hua)學作用。研(yan)(yan)磨(mo)油(you)可使(shi)加工(gong)(gong)表面(mian)(mian)(mian)(mian)(mian)形成的(de)(de)(de)(de)(de)(de)(de)(de)氧化(hua)膜，從(cong)而加快研(yan)(yan)磨(mo)過程。地面(mian)(mian)(mian)(mian)(mian)運動(dong)(dong)相(xiang)(xiang)對(dui)(dui)(dui)運動(dong)(dong)的(de)(de)(de)(de)(de)(de)(de)(de)表面(mian)(mian)(mian)(mian)(mian)和(he)密(mi)封(feng)(feng)(feng)(feng)圈(quan)密(mi)封(feng)(feng)(feng)(feng)圈(quan)的(de)(de)(de)(de)(de)(de)(de)(de)研(yan)(yan)究(jiu)(jiu)，對(dui)(dui)(dui)每(mei)個(ge)點的(de)(de)(de)(de)(de)(de)(de)(de)表面(mian)(mian)(mian)(mian)(mian)上的(de)(de)(de)(de)(de)(de)(de)(de)道路和(he)相(xiang)(xiang)對(dui)(dui)(dui)滑動(dong)(dong)的(de)(de)(de)(de)(de)(de)(de)(de)研(yan)(yan)究(jiu)(jiu)應該是(shi)一(yi)樣的(de)(de)(de)(de)(de)(de)(de)(de)。和(he)相(xiang)(xiang)對(dui)(dui)(dui)運動(dong)(dong)方(fang)向改變。改變密(mi)封(feng)(feng)(feng)(feng)環(huan)內的(de)(de)(de)(de)(de)(de)(de)(de)每(mei)個(ge)粒(li)子的(de)(de)(de)(de)(de)(de)(de)(de)表面(mian)(mian)(mian)(mian)(mian)上運動(dong)(dong)的(de)(de)(de)(de)(de)(de)(de)(de)方(fang)向不(bu)會重(zhong)復他們的(de)(de)(de)(de)(de)(de)(de)(de)軌(gui)跡，以(yi)避免(mian)磨(mo)損明顯增加了(le)密(mi)封(feng)(feng)(feng)(feng)環(huan)的(de)(de)(de)(de)(de)(de)(de)(de)表面(mian)(mian)(mian)(mian)(mian)粗糙度。此外，運動(dong)(dong)方(fang)向的(de)(de)(de)(de)(de)(de)(de)(de)改變不(bu)能使(shi)磨(mo)粒(li)分布比較(jiao)均勻(yun)，且均勻(yun)切(qie)斷(duan)金屬密(mi)封(feng)(feng)(feng)(feng)環(huan)的(de)(de)(de)(de)(de)(de)(de)(de)表面(mian)(mian)(mian)(mian)(mian)。

　　三道鎮機械密封研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)是利用(yong)涂(tu)敷(fu)或者(zhe)壓(ya)(ya)嵌游離磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)粒與(yu)研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)劑的(de)(de)(de)(de)混合(he)物，在一定(ding)(ding)剛性的(de)(de)(de)(de)軟質研(yan)(yan)(yan)(yan)具(ju)(ju)上(shang)，通過研(yan)(yan)(yan)(yan)具(ju)(ju)與(yu)工(gong)件(jian)向磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)料施加(jia)(jia)一定(ding)(ding)壓(ya)(ya)力，磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)料滾動與(yu)滑動，從被(bei)研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)工(gong)件(jian)上(shang)去除極薄的(de)(de)(de)(de)余(yu)量，以(yi)提高工(gong)件(jian)的(de)(de)(de)(de)精度和(he)降低表(biao)面(mian)(mian)(mian)(mian)粗糙度值(zhi)得加(jia)(jia)工(gong)方法。按研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)時有無研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)液可分(fen)為干研(yan)(yan)(yan)(yan)與(yu)濕研(yan)(yan)(yan)(yan)。研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)過程(cheng)(cheng)中，在研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)壓(ya)(ya)力下(xia)，眾多的(de)(de)(de)(de)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)料微(wei)(wei)粒進(jin)(jin)(jin)行(xing)(xing)微(wei)(wei)量切(qie)削。對工(gong)件(jian)表(biao)面(mian)(mian)(mian)(mian)進(jin)(jin)(jin)行(xing)(xing)擠壓(ya)(ya)、刻劃(hua)、滑擦；在研(yan)(yan)(yan)(yan)具(ju)(ju)運動中當研(yan)(yan)(yan)(yan)具(ju)(ju)壓(ya)(ya)嵌的(de)(de)(de)(de)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)粒脫落(luo)后及(ji)液中磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)粒相對工(gong)件(jian)發生(sheng)滾動。研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)過程(cheng)(cheng)中，在研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)壓(ya)(ya)力的(de)(de)(de)(de)作(zuo)(zuo)用(yong)下(xia)，眾多磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)粒進(jin)(jin)(jin)行(xing)(xing)微(wei)(wei)量切(qie)削，同(tong)時被(bei)研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)表(biao)面(mian)(mian)(mian)(mian)發生(sheng)微(wei)(wei)小起伏的(de)(de)(de)(de)塑性變形，并且被(bei)加(jia)(jia)入的(de)(de)(de)(de)諸(zhu)如硬脂酸(suan)、油酸(suan)、脂肪酸(suan)等活(huo)性物質與(yu)被(bei)研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)表(biao)面(mian)(mian)(mian)(mian)起化學作(zuo)(zuo)用(yong)。隨著研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)加(jia)(jia)工(gong)的(de)(de)(de)(de)進(jin)(jin)(jin)行(xing)(xing)，磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)具(ju)(ju)與(yu)工(gong)件(jian)表(biao)面(mian)(mian)(mian)(mian)間更(geng)趨(qu)貼近，其間充滿(man)了微(wei)(wei)屑(xie)與(yu)破碎磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)料的(de)(de)(de)(de)碎渣，堵(du)塞了研(yan)(yan)(yan)(yan)具(ju)(ju)表(biao)面(mian)(mian)(mian)(mian)，對工(gong)件(jian)表(biao)面(mian)(mian)(mian)(mian)起滑擦作(zuo)(zuo)用(yong)。所以(yi)，研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)加(jia)(jia)工(gong)的(de)(de)(de)(de)實質是磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)粒的(de)(de)(de)(de)微(wei)(wei)量切(qie)削、研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)表(biao)面(mian)(mian)(mian)(mian)微(wei)(wei)小起伏的(de)(de)(de)(de)塑性流動、表(biao)面(mian)(mian)(mian)(mian)活(huo)性物質的(de)(de)(de)(de)化學作(zuo)(zuo)用(yong)及(ji)研(yan)(yan)(yan)(yan)具(ju)(ju)堵(du)塞物與(yu)工(gong)件(jian)表(biao)面(mian)(mian)(mian)(mian)滑擦作(zuo)(zuo)用(yong)的(de)(de)(de)(de)綜合(he)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三道鎮機械密封將熱量傳(chuan)給(gei)軸(zhou)承(cheng)，使(shi)軸(zhou)承(cheng)溫度升高(gao)。為(wei)了(le)控制傳(chuan)熱，所以密封的(de)水也起到冷卻作(zuo)用。

　　三道鎮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三道鎮機械密封低(di)壓側(ce)(大氣)將(jiang)清水、蒸汽(qi)等冷(leng)卻流體直(zhi)接引(yin)入(ru)密(mi)(mi)封(feng)端(duan)(duan)泄(xie)露(lu)處的(de)一(yi)種冷(leng)卻方式，也(ye)稱急(ji)冷(leng)，急(ji)冷(leng)不僅冷(leng)卻*，還(huan)能將(jiang)密(mi)(mi)封(feng)端(duan)(duan)面周圍的(de)雜質(zhi)及泄(xie)露(lu)液(ye)(ye)帶(dai)走，急(ji)冷(leng)液(ye)(ye)其壓力比密(mi)(mi)封(feng)介質(zhi)壓力低(di)。急(ji)冷(leng)液(ye)(ye)應盡量采用(yong)軟(ruan)水，以防(fang)(fang)止水垢產生破壞密(mi)(mi)封(feng)端(duan)(duan)面。當密(mi)(mi)封(feng)流體為易凝(ning)固(gu)、易結(jie)晶時(shi)，可(ke)用(yong)蒸汽(qi)、溶劑(ji)等防(fang)(fang)止流體凝(ning)結(jie)。