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孝昌研磨和冷卻對密封面都非常重要

發布時間:2021-12-17 11:54:31 人(ren)氣:98033 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,可以使孝昌機械密封摩擦端面尺寸精度(du)提高(gao),閥(fa)門的(de)密封面,幾何(he)粗糙度(du)和表(biao)面粗糙度(du),但不(bu)能提高(gao)密封表(biao)面的(de)相(xiang)互(hu)位置精度(du)。


  孝昌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,隨著對孝昌機械密封研(yan)究(jiu)(jiu)的(de)(de)(de)復雜面(mian),之(zhi)間的(de)(de)(de)表(biao)(biao)面(mian)和密(mi)封(feng)(feng)磨(mo)(mo)(mo)料(liao)(liao)磨(mo)(mo)(mo)具(ju)研(yan)究(jiu)(jiu)相(xiang)對(dui)(dui)運(yun)(yun)動(dong)(dong)時,密(mi)封(feng)(feng)圈表(biao)(biao)面(mian),磨(mo)(mo)(mo)料(liao)(liao)磨(mo)(mo)(mo)具(ju)研(yan)究(jiu)(jiu)部(bu)分和密(mi)封(feng)(feng)面(mian)之(zhi)間的(de)(de)(de)滑動(dong)(dong)或(huo)滾動(dong)(dong),切斷(duan)密(mi)封(feng)(feng)圈上(shang)薄薄的(de)(de)(de)一(yi)層金屬(shu)表(biao)(biao)面(mian)。密(mi)封(feng)(feng)凸峰部(bu)分的(de)(de)(de)圈,表(biao)(biao)面(mian)研(yan)磨(mo)(mo)(mo),然后逐(zhu)漸(jian)達到所要求的(de)(de)(de)幾何形狀。不僅(jin)是金屬(shu)磨(mo)(mo)(mo)料(liao)(liao)的(de)(de)(de)研(yan)磨(mo)(mo)(mo)加(jia)工,以及化(hua)學作(zuo)用。研(yan)磨(mo)(mo)(mo)油可使加(jia)工表(biao)(biao)面(mian)形成的(de)(de)(de)氧化(hua)膜,從而加(jia)快(kuai)研(yan)磨(mo)(mo)(mo)過程(cheng)。地面(mian)運(yun)(yun)動(dong)(dong)相(xiang)對(dui)(dui)運(yun)(yun)動(dong)(dong)的(de)(de)(de)表(biao)(biao)面(mian)和密(mi)封(feng)(feng)圈密(mi)封(feng)(feng)圈的(de)(de)(de)研(yan)究(jiu)(jiu),對(dui)(dui)每(mei)個點的(de)(de)(de)表(biao)(biao)面(mian)上(shang)的(de)(de)(de)道路和相(xiang)對(dui)(dui)滑動(dong)(dong)的(de)(de)(de)研(yan)究(jiu)(jiu)應該是一(yi)樣的(de)(de)(de)。和相(xiang)對(dui)(dui)運(yun)(yun)動(dong)(dong)方向(xiang)改變。改變密(mi)封(feng)(feng)環(huan)內的(de)(de)(de)每(mei)個粒(li)子的(de)(de)(de)表(biao)(biao)面(mian)上(shang)運(yun)(yun)動(dong)(dong)的(de)(de)(de)方向(xiang)不會重復他們的(de)(de)(de)軌跡,以避免磨(mo)(mo)(mo)損明顯增加(jia)了密(mi)封(feng)(feng)環(huan)的(de)(de)(de)表(biao)(biao)面(mian)粗糙度(du)。此外,運(yun)(yun)動(dong)(dong)方向(xiang)的(de)(de)(de)改變不能使磨(mo)(mo)(mo)粒(li)分布比(bi)較均勻(yun),且均勻(yun)切斷(duan)金屬(shu)密(mi)封(feng)(feng)環(huan)的(de)(de)(de)表(biao)(biao)面(mian)。

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  孝昌機械密封研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)是利用(yong)(yong)涂敷或者壓(ya)(ya)嵌(qian)游(you)離磨(mo)(mo)(mo)粒(li)與(yu)研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)劑的(de)(de)(de)(de)(de)混合物(wu),在一定(ding)剛性的(de)(de)(de)(de)(de)軟(ruan)質研(yan)(yan)(yan)(yan)(yan)具上,通過研(yan)(yan)(yan)(yan)(yan)具與(yu)工(gong)件(jian)向磨(mo)(mo)(mo)料(liao)施加(jia)(jia)一定(ding)壓(ya)(ya)力,磨(mo)(mo)(mo)料(liao)滾(gun)動(dong)(dong)與(yu)滑動(dong)(dong),從被(bei)研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)工(gong)件(jian)上去(qu)除(chu)極(ji)薄的(de)(de)(de)(de)(de)余量,以提高工(gong)件(jian)的(de)(de)(de)(de)(de)精度和降(jiang)低表(biao)面粗糙度值得加(jia)(jia)工(gong)方法。按研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)時(shi)有無研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)液可(ke)分為干研(yan)(yan)(yan)(yan)(yan)與(yu)濕研(yan)(yan)(yan)(yan)(yan)。研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)過程(cheng)中(zhong),在研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)壓(ya)(ya)力下(xia),眾(zhong)多(duo)的(de)(de)(de)(de)(de)磨(mo)(mo)(mo)料(liao)微(wei)(wei)粒(li)進(jin)行(xing)(xing)微(wei)(wei)量切(qie)削。對工(gong)件(jian)表(biao)面進(jin)行(xing)(xing)擠壓(ya)(ya)、刻劃、滑擦(ca)(ca);在研(yan)(yan)(yan)(yan)(yan)具運動(dong)(dong)中(zhong)當(dang)研(yan)(yan)(yan)(yan)(yan)具壓(ya)(ya)嵌(qian)的(de)(de)(de)(de)(de)磨(mo)(mo)(mo)粒(li)脫落后及液中(zhong)磨(mo)(mo)(mo)粒(li)相對工(gong)件(jian)發生(sheng)滾(gun)動(dong)(dong)。研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)過程(cheng)中(zhong),在研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)壓(ya)(ya)力的(de)(de)(de)(de)(de)作用(yong)(yong)下(xia),眾(zhong)多(duo)磨(mo)(mo)(mo)粒(li)進(jin)行(xing)(xing)微(wei)(wei)量切(qie)削,同時(shi)被(bei)研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)表(biao)面發生(sheng)微(wei)(wei)小起(qi)伏的(de)(de)(de)(de)(de)塑性變(bian)形,并且被(bei)加(jia)(jia)入的(de)(de)(de)(de)(de)諸(zhu)如硬(ying)脂(zhi)酸(suan)、油酸(suan)、脂(zhi)肪酸(suan)等活(huo)(huo)性物(wu)質與(yu)被(bei)研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)表(biao)面起(qi)化(hua)學作用(yong)(yong)。隨(sui)著(zhu)研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)加(jia)(jia)工(gong)的(de)(de)(de)(de)(de)進(jin)行(xing)(xing),磨(mo)(mo)(mo)具與(yu)工(gong)件(jian)表(biao)面間更趨貼近,其間充滿了微(wei)(wei)屑與(yu)破碎(sui)磨(mo)(mo)(mo)料(liao)的(de)(de)(de)(de)(de)碎(sui)渣,堵(du)塞了研(yan)(yan)(yan)(yan)(yan)具表(biao)面,對工(gong)件(jian)表(biao)面起(qi)滑擦(ca)(ca)作用(yong)(yong)。所以,研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)加(jia)(jia)工(gong)的(de)(de)(de)(de)(de)實質是磨(mo)(mo)(mo)粒(li)的(de)(de)(de)(de)(de)微(wei)(wei)量切(qie)削、研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)表(biao)面微(wei)(wei)小起(qi)伏的(de)(de)(de)(de)(de)塑性流動(dong)(dong)、表(biao)面活(huo)(huo)性物(wu)質的(de)(de)(de)(de)(de)化(hua)學作用(yong)(yong)及研(yan)(yan)(yan)(yan)(yan)具堵(du)塞物(wu)與(yu)工(gong)件(jian)表(biao)面滑擦(ca)(ca)作用(yong)(yong)的(de)(de)(de)(de)(de)綜合結(jie)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孝昌機械密封將熱(re)量傳給軸承,使軸承溫(wen)度升高。為了控制傳熱(re),所(suo)以密封的(de)水(shui)也起(qi)到冷(leng)卻作用。


  孝昌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孝昌機械密封低壓側(大氣)將清(qing)水、蒸汽(qi)等(deng)冷(leng)卻流體(ti)直接引(yin)入密(mi)(mi)封(feng)端(duan)泄(xie)露(lu)處的(de)一種(zhong)冷(leng)卻方式,也稱急(ji)(ji)冷(leng),急(ji)(ji)冷(leng)不僅冷(leng)卻*,還能將密(mi)(mi)封(feng)端(duan)面周圍的(de)雜(za)質及泄(xie)露(lu)液(ye)帶走,急(ji)(ji)冷(leng)液(ye)其壓力比密(mi)(mi)封(feng)介(jie)質壓力低。急(ji)(ji)冷(leng)液(ye)應盡量采用軟水,以防止(zhi)(zhi)水垢(gou)產生破(po)壞(huai)密(mi)(mi)封(feng)端(duan)面。當(dang)密(mi)(mi)封(feng)流體(ti)為易凝固、易結晶時,可用蒸汽(qi)、溶劑等(deng)防止(zhi)(zhi)流體(ti)凝結。