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射洪研磨和冷卻對密封面都非常重要

發布(bu)時間:2021-12-17 11:54:31 人氣:98425 來(lai)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,可以使射洪機械密封摩擦(ca)端面(mian)尺寸精度提高,閥門的(de)密(mi)(mi)封面(mian),幾(ji)何粗糙度和表面(mian)粗糙度,但不能提高密(mi)(mi)封表面(mian)的(de)相互位置精度。


  射洪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,隨著對射洪機械密封研(yan)究(jiu)的(de)(de)(de)(de)復雜面(mian),之(zhi)間的(de)(de)(de)(de)表(biao)(biao)面(mian)和(he)密(mi)(mi)封(feng)(feng)(feng)磨料磨具(ju)研(yan)究(jiu)相對(dui)運(yun)(yun)動(dong)時,密(mi)(mi)封(feng)(feng)(feng)圈(quan)表(biao)(biao)面(mian),磨料磨具(ju)研(yan)究(jiu)部(bu)分(fen)(fen)和(he)密(mi)(mi)封(feng)(feng)(feng)面(mian)之(zhi)間的(de)(de)(de)(de)滑動(dong)或滾(gun)動(dong),切(qie)斷密(mi)(mi)封(feng)(feng)(feng)圈(quan)上薄(bo)薄(bo)的(de)(de)(de)(de)一層(ceng)金屬(shu)表(biao)(biao)面(mian)。密(mi)(mi)封(feng)(feng)(feng)凸(tu)峰(feng)部(bu)分(fen)(fen)的(de)(de)(de)(de)圈(quan),表(biao)(biao)面(mian)研(yan)磨,然(ran)后(hou)逐漸達(da)到所要求的(de)(de)(de)(de)幾何(he)形(xing)狀。不(bu)(bu)僅是金屬(shu)磨料的(de)(de)(de)(de)研(yan)磨加工,以(yi)及化(hua)學作用。研(yan)磨油可使加工表(biao)(biao)面(mian)形(xing)成的(de)(de)(de)(de)氧(yang)化(hua)膜,從而加快研(yan)磨過程。地面(mian)運(yun)(yun)動(dong)相對(dui)運(yun)(yun)動(dong)的(de)(de)(de)(de)表(biao)(biao)面(mian)和(he)密(mi)(mi)封(feng)(feng)(feng)圈(quan)密(mi)(mi)封(feng)(feng)(feng)圈(quan)的(de)(de)(de)(de)研(yan)究(jiu),對(dui)每個點的(de)(de)(de)(de)表(biao)(biao)面(mian)上的(de)(de)(de)(de)道路和(he)相對(dui)滑動(dong)的(de)(de)(de)(de)研(yan)究(jiu)應該(gai)是一樣的(de)(de)(de)(de)。和(he)相對(dui)運(yun)(yun)動(dong)方(fang)向改(gai)(gai)變(bian)。改(gai)(gai)變(bian)密(mi)(mi)封(feng)(feng)(feng)環(huan)內的(de)(de)(de)(de)每個粒子的(de)(de)(de)(de)表(biao)(biao)面(mian)上運(yun)(yun)動(dong)的(de)(de)(de)(de)方(fang)向不(bu)(bu)會(hui)重復他們的(de)(de)(de)(de)軌跡,以(yi)避免(mian)磨損明(ming)顯增加了密(mi)(mi)封(feng)(feng)(feng)環(huan)的(de)(de)(de)(de)表(biao)(biao)面(mian)粗糙度。此(ci)外(wai),運(yun)(yun)動(dong)方(fang)向的(de)(de)(de)(de)改(gai)(gai)變(bian)不(bu)(bu)能使磨粒分(fen)(fen)布(bu)比較均(jun)勻,且均(jun)勻切(qie)斷金屬(shu)密(mi)(mi)封(feng)(feng)(feng)環(huan)的(de)(de)(de)(de)表(biao)(biao)面(mian)。

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  射洪機械密封研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)是(shi)利(li)用(yong)涂敷或(huo)者壓(ya)(ya)嵌游離磨(mo)(mo)(mo)(mo)粒(li)(li)與(yu)(yu)研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)劑的(de)(de)(de)(de)(de)混(hun)合物(wu),在(zai)一定(ding)剛性的(de)(de)(de)(de)(de)軟質研(yan)(yan)(yan)(yan)具(ju)(ju)上,通過研(yan)(yan)(yan)(yan)具(ju)(ju)與(yu)(yu)工(gong)(gong)件(jian)(jian)向磨(mo)(mo)(mo)(mo)料(liao)施加(jia)(jia)一定(ding)壓(ya)(ya)力(li),磨(mo)(mo)(mo)(mo)料(liao)滾動與(yu)(yu)滑動,從被研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)工(gong)(gong)件(jian)(jian)上去除極薄的(de)(de)(de)(de)(de)余量(liang),以提高工(gong)(gong)件(jian)(jian)的(de)(de)(de)(de)(de)精度(du)和(he)降低表(biao)(biao)(biao)(biao)(biao)(biao)面(mian)(mian)(mian)粗糙(cao)度(du)值得加(jia)(jia)工(gong)(gong)方法(fa)。按(an)研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)時(shi)(shi)有無研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)液(ye)可分為干研(yan)(yan)(yan)(yan)與(yu)(yu)濕(shi)研(yan)(yan)(yan)(yan)。研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)過程中,在(zai)研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)壓(ya)(ya)力(li)下,眾多的(de)(de)(de)(de)(de)磨(mo)(mo)(mo)(mo)料(liao)微(wei)(wei)(wei)粒(li)(li)進行微(wei)(wei)(wei)量(liang)切(qie)削。對工(gong)(gong)件(jian)(jian)表(biao)(biao)(biao)(biao)(biao)(biao)面(mian)(mian)(mian)進行擠壓(ya)(ya)、刻劃、滑擦;在(zai)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)(de)磨(mo)(mo)(mo)(mo)粒(li)(li)脫落后及液(ye)中磨(mo)(mo)(mo)(mo)粒(li)(li)相對工(gong)(gong)件(jian)(jian)發生(sheng)滾動。研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)過程中,在(zai)研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)壓(ya)(ya)力(li)的(de)(de)(de)(de)(de)作(zuo)用(yong)下,眾多磨(mo)(mo)(mo)(mo)粒(li)(li)進行微(wei)(wei)(wei)量(liang)切(qie)削,同時(shi)(shi)被研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)表(biao)(biao)(biao)(biao)(biao)(biao)面(mian)(mian)(mian)發生(sheng)微(wei)(wei)(wei)小(xiao)起伏(fu)的(de)(de)(de)(de)(de)塑性變形,并且(qie)被加(jia)(jia)入的(de)(de)(de)(de)(de)諸如硬脂(zhi)酸、油(you)酸、脂(zhi)肪酸等活性物(wu)質與(yu)(yu)被研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)表(biao)(biao)(biao)(biao)(biao)(biao)面(mian)(mian)(mian)起化(hua)學作(zuo)用(yong)。隨著研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)加(jia)(jia)工(gong)(gong)的(de)(de)(de)(de)(de)進行,磨(mo)(mo)(mo)(mo)具(ju)(ju)與(yu)(yu)工(gong)(gong)件(jian)(jian)表(biao)(biao)(biao)(biao)(biao)(biao)面(mian)(mian)(mian)間(jian)更趨貼近(jin),其(qi)間(jian)充滿(man)了微(wei)(wei)(wei)屑(xie)與(yu)(yu)破碎(sui)磨(mo)(mo)(mo)(mo)料(liao)的(de)(de)(de)(de)(de)碎(sui)渣,堵塞了研(yan)(yan)(yan)(yan)具(ju)(ju)表(biao)(biao)(biao)(biao)(biao)(biao)面(mian)(mian)(mian),對工(gong)(gong)件(jian)(jian)表(biao)(biao)(biao)(biao)(biao)(biao)面(mian)(mian)(mian)起滑擦作(zuo)用(yong)。所(suo)以,研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)加(jia)(jia)工(gong)(gong)的(de)(de)(de)(de)(de)實質是(shi)磨(mo)(mo)(mo)(mo)粒(li)(li)的(de)(de)(de)(de)(de)微(wei)(wei)(wei)量(liang)切(qie)削、研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)表(biao)(biao)(biao)(biao)(biao)(biao)面(mian)(mian)(mian)微(wei)(wei)(wei)小(xiao)起伏(fu)的(de)(de)(de)(de)(de)塑性流動、表(biao)(biao)(biao)(biao)(biao)(biao)面(mian)(mian)(mian)活性物(wu)質的(de)(de)(de)(de)(de)化(hua)學作(zuo)用(yong)及研(yan)(yan)(yan)(yan)具(ju)(ju)堵塞物(wu)與(yu)(yu)工(gong)(gong)件(jian)(jian)表(biao)(biao)(biao)(biao)(biao)(biao)面(mian)(mian)(mian)滑擦作(zuo)用(yong)的(de)(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射洪機械密封將熱(re)量傳給軸承,使軸承溫度(du)升高。為了(le)控(kong)制傳熱(re),所以密封的水也(ye)起到冷卻作用。


  射洪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射洪機械密封低(di)(di)壓(ya)側(大氣)將清水(shui)、蒸(zheng)汽(qi)等(deng)冷(leng)卻流體直接引入(ru)密封(feng)端(duan)泄(xie)露處的一種冷(leng)卻方式(shi),也稱急冷(leng),急冷(leng)不僅冷(leng)卻*,還能將密封(feng)端(duan)面周(zhou)圍的雜質(zhi)及泄(xie)露液帶走,急冷(leng)液其(qi)壓(ya)力比密封(feng)介質(zhi)壓(ya)力低(di)(di)。急冷(leng)液應(ying)盡(jin)量采用軟水(shui),以防(fang)止水(shui)垢產(chan)生破壞密封(feng)端(duan)面。當密封(feng)流體為易凝固、易結(jie)晶時,可(ke)用蒸(zheng)汽(qi)、溶劑等(deng)防(fang)止流體凝結(jie)。