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金鄉研磨和冷卻對密封面都非常重要

發布時(shi)間:2021-12-17 11:54:31 人氣:98146 來源(yuan):

  在研磨過程中,閥門制造的密封面是一個常用的整理方法,可以使金鄉機械密封摩擦端面尺寸精(jing)度提(ti)高(gao),閥門的(de)密封面,幾(ji)何粗糙度和表(biao)面粗糙度,但不能提(ti)高(gao)密封表(biao)面的(de)相互位置精(jing)度。


  金鄉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,隨著對金鄉機械密封研究(jiu)(jiu)的(de)(de)(de)(de)復雜面(mian),之間(jian)的(de)(de)(de)(de)表(biao)(biao)面(mian)和(he)密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)磨(mo)(mo)料磨(mo)(mo)具研究(jiu)(jiu)相(xiang)(xiang)對(dui)運(yun)動(dong)(dong)(dong)(dong)(dong)時(shi),密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)圈(quan)表(biao)(biao)面(mian),磨(mo)(mo)料磨(mo)(mo)具研究(jiu)(jiu)部(bu)(bu)分和(he)密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)面(mian)之間(jian)的(de)(de)(de)(de)滑動(dong)(dong)(dong)(dong)(dong)或滾動(dong)(dong)(dong)(dong)(dong),切(qie)斷密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)圈(quan)上薄薄的(de)(de)(de)(de)一層金屬(shu)表(biao)(biao)面(mian)。密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)凸(tu)峰部(bu)(bu)分的(de)(de)(de)(de)圈(quan),表(biao)(biao)面(mian)研磨(mo)(mo),然后(hou)逐漸(jian)達到所(suo)要求的(de)(de)(de)(de)幾何形狀(zhuang)。不僅是(shi)(shi)金屬(shu)磨(mo)(mo)料的(de)(de)(de)(de)研磨(mo)(mo)加工(gong),以(yi)(yi)及化學作用。研磨(mo)(mo)油可使加工(gong)表(biao)(biao)面(mian)形成的(de)(de)(de)(de)氧化膜,從而加快研磨(mo)(mo)過程(cheng)。地面(mian)運(yun)動(dong)(dong)(dong)(dong)(dong)相(xiang)(xiang)對(dui)運(yun)動(dong)(dong)(dong)(dong)(dong)的(de)(de)(de)(de)表(biao)(biao)面(mian)和(he)密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)圈(quan)密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)圈(quan)的(de)(de)(de)(de)研究(jiu)(jiu),對(dui)每個(ge)點的(de)(de)(de)(de)表(biao)(biao)面(mian)上的(de)(de)(de)(de)道(dao)路和(he)相(xiang)(xiang)對(dui)滑動(dong)(dong)(dong)(dong)(dong)的(de)(de)(de)(de)研究(jiu)(jiu)應該(gai)是(shi)(shi)一樣的(de)(de)(de)(de)。和(he)相(xiang)(xiang)對(dui)運(yun)動(dong)(dong)(dong)(dong)(dong)方(fang)(fang)向(xiang)改(gai)變。改(gai)變密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)環內的(de)(de)(de)(de)每個(ge)粒子的(de)(de)(de)(de)表(biao)(biao)面(mian)上運(yun)動(dong)(dong)(dong)(dong)(dong)的(de)(de)(de)(de)方(fang)(fang)向(xiang)不會重(zhong)復他們的(de)(de)(de)(de)軌跡(ji),以(yi)(yi)避免(mian)磨(mo)(mo)損明(ming)顯增加了(le)密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)環的(de)(de)(de)(de)表(biao)(biao)面(mian)粗(cu)糙度。此外,運(yun)動(dong)(dong)(dong)(dong)(dong)方(fang)(fang)向(xiang)的(de)(de)(de)(de)改(gai)變不能(neng)使磨(mo)(mo)粒分布比較均勻,且(qie)均勻切(qie)斷金屬(shu)密(mi)(mi)(mi)(mi)封(feng)(feng)(feng)環的(de)(de)(de)(de)表(biao)(biao)面(mian)。

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  金鄉機械密封研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)是利用涂敷或者壓(ya)嵌游離(li)磨(mo)(mo)(mo)粒(li)(li)與(yu)研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)劑的(de)(de)(de)(de)混合(he)物(wu),在(zai)(zai)一(yi)定剛性(xing)的(de)(de)(de)(de)軟質(zhi)(zhi)研(yan)(yan)(yan)(yan)具上,通過研(yan)(yan)(yan)(yan)具與(yu)工(gong)件(jian)(jian)(jian)向磨(mo)(mo)(mo)料(liao)施加(jia)一(yi)定壓(ya)力(li)(li),磨(mo)(mo)(mo)料(liao)滾(gun)動與(yu)滑(hua)動,從被(bei)研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)工(gong)件(jian)(jian)(jian)上去(qu)除極(ji)薄的(de)(de)(de)(de)余量(liang),以提高工(gong)件(jian)(jian)(jian)的(de)(de)(de)(de)精度和降(jiang)低表(biao)面(mian)(mian)(mian)粗糙度值(zhi)得加(jia)工(gong)方法(fa)。按研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)時有無研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)液可分(fen)為干研(yan)(yan)(yan)(yan)與(yu)濕(shi)研(yan)(yan)(yan)(yan)。研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)過程中(zhong),在(zai)(zai)研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)壓(ya)力(li)(li)下,眾(zhong)多的(de)(de)(de)(de)磨(mo)(mo)(mo)料(liao)微(wei)(wei)(wei)粒(li)(li)進行(xing)微(wei)(wei)(wei)量(liang)切削。對工(gong)件(jian)(jian)(jian)表(biao)面(mian)(mian)(mian)進行(xing)擠壓(ya)、刻劃、滑(hua)擦(ca);在(zai)(zai)研(yan)(yan)(yan)(yan)具運動中(zhong)當(dang)研(yan)(yan)(yan)(yan)具壓(ya)嵌的(de)(de)(de)(de)磨(mo)(mo)(mo)粒(li)(li)脫落后及(ji)液中(zhong)磨(mo)(mo)(mo)粒(li)(li)相(xiang)對工(gong)件(jian)(jian)(jian)發(fa)生滾(gun)動。研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)過程中(zhong),在(zai)(zai)研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)壓(ya)力(li)(li)的(de)(de)(de)(de)作(zuo)用下,眾(zhong)多磨(mo)(mo)(mo)粒(li)(li)進行(xing)微(wei)(wei)(wei)量(liang)切削,同(tong)時被(bei)研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)表(biao)面(mian)(mian)(mian)發(fa)生微(wei)(wei)(wei)小起伏(fu)的(de)(de)(de)(de)塑性(xing)變形(xing),并(bing)且被(bei)加(jia)入的(de)(de)(de)(de)諸如硬(ying)脂酸、油酸、脂肪酸等活(huo)性(xing)物(wu)質(zhi)(zhi)與(yu)被(bei)研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)表(biao)面(mian)(mian)(mian)起化學作(zuo)用。隨(sui)著研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)加(jia)工(gong)的(de)(de)(de)(de)進行(xing),磨(mo)(mo)(mo)具與(yu)工(gong)件(jian)(jian)(jian)表(biao)面(mian)(mian)(mian)間(jian)更趨貼(tie)近,其間(jian)充滿了微(wei)(wei)(wei)屑(xie)與(yu)破(po)碎磨(mo)(mo)(mo)料(liao)的(de)(de)(de)(de)碎渣,堵塞了研(yan)(yan)(yan)(yan)具表(biao)面(mian)(mian)(mian),對工(gong)件(jian)(jian)(jian)表(biao)面(mian)(mian)(mian)起滑(hua)擦(ca)作(zuo)用。所以,研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)加(jia)工(gong)的(de)(de)(de)(de)實質(zhi)(zhi)是磨(mo)(mo)(mo)粒(li)(li)的(de)(de)(de)(de)微(wei)(wei)(wei)量(liang)切削、研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)表(biao)面(mian)(mian)(mian)微(wei)(wei)(wei)小起伏(fu)的(de)(de)(de)(de)塑性(xing)流動、表(biao)面(mian)(mian)(mian)活(huo)性(xing)物(wu)質(zhi)(zhi)的(de)(de)(de)(de)化學作(zuo)用及(ji)研(yan)(yan)(yan)(yan)具堵塞物(wu)與(yu)工(gong)件(jian)(jian)(jian)表(biao)面(mian)(mian)(mian)滑(hua)擦(ca)作(zuo)用的(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金鄉機械密封將熱量(liang)傳給(gei)軸承,使軸承溫(wen)度升高。為了控制傳熱,所(suo)以密封的水(shui)也起到冷卻作(zuo)用。


  金鄉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金鄉機械密封低壓側(大氣)將清水(shui)、蒸(zheng)汽(qi)等冷(leng)卻流體直(zhi)接引入(ru)密封端泄(xie)露處的一種冷(leng)卻方式(shi),也稱急冷(leng),急冷(leng)不(bu)僅冷(leng)卻*,還能(neng)將密封端面(mian)周圍的雜質及泄(xie)露液帶走,急冷(leng)液其壓力比(bi)密封介質壓力低。急冷(leng)液應盡(jin)量采用軟(ruan)水(shui),以防止水(shui)垢產生破壞密封端面(mian)。當密封流體為易凝固、易結(jie)晶時(shi),可用蒸(zheng)汽(qi)、溶劑等防止流體凝結(jie)。