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發布(bu)時間:2021-12-17 11:54:31 人氣(qi):93966 來(lai)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,可以使卓尼機械密封摩擦(ca)端面尺寸精(jing)(jing)度提高,閥門的密封(feng)面,幾(ji)何粗糙度和表面粗糙度,但(dan)不能提高密封(feng)表面的相互位置精(jing)(jing)度。
卓尼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,隨著對卓尼機械密封研(yan)(yan)究(jiu)(jiu)的(de)(de)(de)(de)(de)(de)復雜(za)面(mian)(mian)(mian)(mian),之間(jian)的(de)(de)(de)(de)(de)(de)表面(mian)(mian)(mian)(mian)和密(mi)(mi)(mi)封(feng)(feng)(feng)(feng)磨(mo)(mo)料磨(mo)(mo)具研(yan)(yan)究(jiu)(jiu)相對運(yun)(yun)動(dong)(dong)(dong)時,密(mi)(mi)(mi)封(feng)(feng)(feng)(feng)圈表面(mian)(mian)(mian)(mian),磨(mo)(mo)料磨(mo)(mo)具研(yan)(yan)究(jiu)(jiu)部(bu)分(fen)(fen)(fen)和密(mi)(mi)(mi)封(feng)(feng)(feng)(feng)面(mian)(mian)(mian)(mian)之間(jian)的(de)(de)(de)(de)(de)(de)滑動(dong)(dong)(dong)或滾動(dong)(dong)(dong),切(qie)斷密(mi)(mi)(mi)封(feng)(feng)(feng)(feng)圈上薄薄的(de)(de)(de)(de)(de)(de)一(yi)層金(jin)屬(shu)表面(mian)(mian)(mian)(mian)。密(mi)(mi)(mi)封(feng)(feng)(feng)(feng)凸峰部(bu)分(fen)(fen)(fen)的(de)(de)(de)(de)(de)(de)圈,表面(mian)(mian)(mian)(mian)研(yan)(yan)磨(mo)(mo),然后逐(zhu)漸達到所要求(qiu)的(de)(de)(de)(de)(de)(de)幾何形(xing)(xing)狀。不(bu)僅是金(jin)屬(shu)磨(mo)(mo)料的(de)(de)(de)(de)(de)(de)研(yan)(yan)磨(mo)(mo)加工,以及化學作用。研(yan)(yan)磨(mo)(mo)油可使(shi)加工表面(mian)(mian)(mian)(mian)形(xing)(xing)成的(de)(de)(de)(de)(de)(de)氧化膜,從而加快研(yan)(yan)磨(mo)(mo)過程。地面(mian)(mian)(mian)(mian)運(yun)(yun)動(dong)(dong)(dong)相對運(yun)(yun)動(dong)(dong)(dong)的(de)(de)(de)(de)(de)(de)表面(mian)(mian)(mian)(mian)和密(mi)(mi)(mi)封(feng)(feng)(feng)(feng)圈密(mi)(mi)(mi)封(feng)(feng)(feng)(feng)圈的(de)(de)(de)(de)(de)(de)研(yan)(yan)究(jiu)(jiu),對每個(ge)點的(de)(de)(de)(de)(de)(de)表面(mian)(mian)(mian)(mian)上的(de)(de)(de)(de)(de)(de)道(dao)路和相對滑動(dong)(dong)(dong)的(de)(de)(de)(de)(de)(de)研(yan)(yan)究(jiu)(jiu)應該是一(yi)樣的(de)(de)(de)(de)(de)(de)。和相對運(yun)(yun)動(dong)(dong)(dong)方(fang)向(xiang)(xiang)改(gai)變(bian)(bian)。改(gai)變(bian)(bian)密(mi)(mi)(mi)封(feng)(feng)(feng)(feng)環(huan)內(nei)的(de)(de)(de)(de)(de)(de)每個(ge)粒子的(de)(de)(de)(de)(de)(de)表面(mian)(mian)(mian)(mian)上運(yun)(yun)動(dong)(dong)(dong)的(de)(de)(de)(de)(de)(de)方(fang)向(xiang)(xiang)不(bu)會重復他們的(de)(de)(de)(de)(de)(de)軌跡,以避免磨(mo)(mo)損(sun)明顯增加了密(mi)(mi)(mi)封(feng)(feng)(feng)(feng)環(huan)的(de)(de)(de)(de)(de)(de)表面(mian)(mian)(mian)(mian)粗糙度。此外,運(yun)(yun)動(dong)(dong)(dong)方(fang)向(xiang)(xiang)的(de)(de)(de)(de)(de)(de)改(gai)變(bian)(bian)不(bu)能使(shi)磨(mo)(mo)粒分(fen)(fen)(fen)布比較均(jun)(jun)勻,且均(jun)(jun)勻切(qie)斷金(jin)屬(shu)密(mi)(mi)(mi)封(feng)(feng)(feng)(feng)環(huan)的(de)(de)(de)(de)(de)(de)表面(mian)(mian)(mian)(mian)。
卓尼機械密封研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)是利用(yong)涂敷或(huo)者壓嵌游離磨(mo)(mo)粒(li)(li)(li)與(yu)研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)劑(ji)的(de)(de)混(hun)合(he)物(wu)(wu),在(zai)一定剛性的(de)(de)軟(ruan)質(zhi)(zhi)研(yan)(yan)(yan)(yan)(yan)具(ju)(ju)(ju)上,通過研(yan)(yan)(yan)(yan)(yan)具(ju)(ju)(ju)與(yu)工(gong)(gong)件(jian)(jian)(jian)向磨(mo)(mo)料施加一定壓力(li),磨(mo)(mo)料滾(gun)動與(yu)滑動,從被(bei)研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)工(gong)(gong)件(jian)(jian)(jian)上去(qu)除極薄的(de)(de)余量,以(yi)提高(gao)工(gong)(gong)件(jian)(jian)(jian)的(de)(de)精度和降(jiang)低表(biao)(biao)(biao)面(mian)(mian)(mian)粗糙度值得加工(gong)(gong)方(fang)法。按研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)時有無(wu)研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)液可分(fen)為(wei)干(gan)研(yan)(yan)(yan)(yan)(yan)與(yu)濕(shi)研(yan)(yan)(yan)(yan)(yan)。研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)過程中(zhong)(zhong),在(zai)研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)壓力(li)下,眾多的(de)(de)磨(mo)(mo)料微粒(li)(li)(li)進(jin)行(xing)(xing)微量切(qie)削(xue)。對工(gong)(gong)件(jian)(jian)(jian)表(biao)(biao)(biao)面(mian)(mian)(mian)進(jin)行(xing)(xing)擠壓、刻(ke)劃、滑擦(ca);在(zai)研(yan)(yan)(yan)(yan)(yan)具(ju)(ju)(ju)運動中(zhong)(zhong)當研(yan)(yan)(yan)(yan)(yan)具(ju)(ju)(ju)壓嵌的(de)(de)磨(mo)(mo)粒(li)(li)(li)脫落(luo)后及液中(zhong)(zhong)磨(mo)(mo)粒(li)(li)(li)相對工(gong)(gong)件(jian)(jian)(jian)發生滾(gun)動。研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)過程中(zhong)(zhong),在(zai)研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)壓力(li)的(de)(de)作(zuo)用(yong)下,眾多磨(mo)(mo)粒(li)(li)(li)進(jin)行(xing)(xing)微量切(qie)削(xue),同時被(bei)研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)表(biao)(biao)(biao)面(mian)(mian)(mian)發生微小(xiao)起(qi)伏的(de)(de)塑性變(bian)形(xing),并且被(bei)加入的(de)(de)諸如硬(ying)脂酸、油酸、脂肪酸等活(huo)性物(wu)(wu)質(zhi)(zhi)與(yu)被(bei)研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)表(biao)(biao)(biao)面(mian)(mian)(mian)起(qi)化(hua)(hua)學作(zuo)用(yong)。隨著(zhu)研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)加工(gong)(gong)的(de)(de)進(jin)行(xing)(xing),磨(mo)(mo)具(ju)(ju)(ju)與(yu)工(gong)(gong)件(jian)(jian)(jian)表(biao)(biao)(biao)面(mian)(mian)(mian)間(jian)更(geng)趨貼近,其間(jian)充滿了(le)微屑(xie)與(yu)破碎磨(mo)(mo)料的(de)(de)碎渣(zha),堵(du)塞了(le)研(yan)(yan)(yan)(yan)(yan)具(ju)(ju)(ju)表(biao)(biao)(biao)面(mian)(mian)(mian),對工(gong)(gong)件(jian)(jian)(jian)表(biao)(biao)(biao)面(mian)(mian)(mian)起(qi)滑擦(ca)作(zuo)用(yong)。所以(yi),研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)加工(gong)(gong)的(de)(de)實質(zhi)(zhi)是磨(mo)(mo)粒(li)(li)(li)的(de)(de)微量切(qie)削(xue)、研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)表(biao)(biao)(biao)面(mian)(mian)(mian)微小(xiao)起(qi)伏的(de)(de)塑性流動、表(biao)(biao)(biao)面(mian)(mian)(mian)活(huo)性物(wu)(wu)質(zhi)(zhi)的(de)(de)化(hua)(hua)學作(zuo)用(yong)及研(yan)(yan)(yan)(yan)(yan)具(ju)(ju)(ju)堵(du)塞物(wu)(wu)與(yu)工(gong)(gong)件(jian)(jian)(jian)表(biao)(biao)(biao)面(mian)(mian)(mian)滑擦(ca)作(zuo)用(yong)的(de)(de)綜(zong)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卓尼機械密封將熱量傳給(gei)軸(zhou)承,使(shi)軸(zhou)承溫度(du)升高。為了(le)控制(zhi)傳熱,所以密封的水也起到冷卻作用。
卓尼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卓尼機械密封低(di)壓(ya)(ya)側(大氣)將清水、蒸汽(qi)等(deng)(deng)冷(leng)卻(que)(que)流體直(zhi)接(jie)引入密(mi)封(feng)端泄露處的(de)一種冷(leng)卻(que)(que)方式,也稱急冷(leng),急冷(leng)不僅冷(leng)卻(que)(que)*,還能將密(mi)封(feng)端面(mian)周圍的(de)雜質及泄露液帶(dai)走,急冷(leng)液其壓(ya)(ya)力比密(mi)封(feng)介質壓(ya)(ya)力低(di)。急冷(leng)液應盡(jin)量采(cai)用(yong)軟(ruan)水,以(yi)防(fang)止(zhi)水垢(gou)產生(sheng)破(po)壞密(mi)封(feng)端面(mian)。當密(mi)封(feng)流體為(wei)易凝(ning)固、易結(jie)晶時,可(ke)用(yong)蒸汽(qi)、溶劑等(deng)(deng)防(fang)止(zhi)流體凝(ning)結(jie)。