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紹興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:97943 來源:

  在研磨過程中,閥門制造的密封面是一個常用的整理方法,可以使紹興機械密封摩擦端面(mian)尺寸精(jing)度(du)(du)提(ti)高,閥門的密(mi)封(feng)(feng)面(mian),幾何粗糙(cao)(cao)度(du)(du)和表(biao)面(mian)粗糙(cao)(cao)度(du)(du),但不能提(ti)高密(mi)封(feng)(feng)表(biao)面(mian)的相互位置精(jing)度(du)(du)。


  紹興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,隨著對紹興機械密封研(yan)(yan)(yan)究(jiu)的(de)(de)復雜面(mian)(mian)(mian),之(zhi)間(jian)的(de)(de)表(biao)(biao)(biao)(biao)(biao)面(mian)(mian)(mian)和密(mi)封(feng)磨(mo)(mo)(mo)(mo)料(liao)磨(mo)(mo)(mo)(mo)具研(yan)(yan)(yan)究(jiu)相對(dui)運(yun)(yun)動(dong)(dong)時,密(mi)封(feng)圈(quan)表(biao)(biao)(biao)(biao)(biao)面(mian)(mian)(mian),磨(mo)(mo)(mo)(mo)料(liao)磨(mo)(mo)(mo)(mo)具研(yan)(yan)(yan)究(jiu)部分(fen)和密(mi)封(feng)面(mian)(mian)(mian)之(zhi)間(jian)的(de)(de)滑(hua)動(dong)(dong)或滾動(dong)(dong),切斷密(mi)封(feng)圈(quan)上(shang)(shang)薄(bo)薄(bo)的(de)(de)一(yi)層金屬(shu)表(biao)(biao)(biao)(biao)(biao)面(mian)(mian)(mian)。密(mi)封(feng)凸峰部分(fen)的(de)(de)圈(quan),表(biao)(biao)(biao)(biao)(biao)面(mian)(mian)(mian)研(yan)(yan)(yan)磨(mo)(mo)(mo)(mo),然后逐漸達到所要求的(de)(de)幾(ji)何形(xing)狀。不(bu)僅是(shi)金屬(shu)磨(mo)(mo)(mo)(mo)料(liao)的(de)(de)研(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)加(jia)工,以及化(hua)學作用(yong)。研(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)油可(ke)使加(jia)工表(biao)(biao)(biao)(biao)(biao)面(mian)(mian)(mian)形(xing)成的(de)(de)氧化(hua)膜,從而加(jia)快研(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)過(guo)程。地面(mian)(mian)(mian)運(yun)(yun)動(dong)(dong)相對(dui)運(yun)(yun)動(dong)(dong)的(de)(de)表(biao)(biao)(biao)(biao)(biao)面(mian)(mian)(mian)和密(mi)封(feng)圈(quan)密(mi)封(feng)圈(quan)的(de)(de)研(yan)(yan)(yan)究(jiu),對(dui)每(mei)個(ge)點的(de)(de)表(biao)(biao)(biao)(biao)(biao)面(mian)(mian)(mian)上(shang)(shang)的(de)(de)道路(lu)和相對(dui)滑(hua)動(dong)(dong)的(de)(de)研(yan)(yan)(yan)究(jiu)應該是(shi)一(yi)樣的(de)(de)。和相對(dui)運(yun)(yun)動(dong)(dong)方向(xiang)改(gai)變。改(gai)變密(mi)封(feng)環(huan)內的(de)(de)每(mei)個(ge)粒子的(de)(de)表(biao)(biao)(biao)(biao)(biao)面(mian)(mian)(mian)上(shang)(shang)運(yun)(yun)動(dong)(dong)的(de)(de)方向(xiang)不(bu)會重(zhong)復他們的(de)(de)軌跡(ji),以避免磨(mo)(mo)(mo)(mo)損明顯增加(jia)了密(mi)封(feng)環(huan)的(de)(de)表(biao)(biao)(biao)(biao)(biao)面(mian)(mian)(mian)粗糙(cao)度。此外,運(yun)(yun)動(dong)(dong)方向(xiang)的(de)(de)改(gai)變不(bu)能使磨(mo)(mo)(mo)(mo)粒分(fen)布比較均(jun)勻,且(qie)均(jun)勻切斷金屬(shu)密(mi)封(feng)環(huan)的(de)(de)表(biao)(biao)(biao)(biao)(biao)面(mian)(mian)(mian)。

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  紹興機械密封研(yan)(yan)(yan)磨(mo)(mo)(mo)是(shi)利用涂敷或者壓(ya)(ya)(ya)嵌游離磨(mo)(mo)(mo)粒(li)與(yu)(yu)研(yan)(yan)(yan)磨(mo)(mo)(mo)劑的(de)(de)(de)(de)混合(he)物(wu)(wu)(wu),在(zai)(zai)一定剛性(xing)的(de)(de)(de)(de)軟質(zhi)(zhi)研(yan)(yan)(yan)具(ju)上(shang)(shang),通過研(yan)(yan)(yan)具(ju)與(yu)(yu)工(gong)(gong)件(jian)向磨(mo)(mo)(mo)料(liao)施加(jia)一定壓(ya)(ya)(ya)力(li),磨(mo)(mo)(mo)料(liao)滾(gun)(gun)動與(yu)(yu)滑(hua)(hua)(hua)動,從被研(yan)(yan)(yan)磨(mo)(mo)(mo)工(gong)(gong)件(jian)上(shang)(shang)去除極(ji)薄的(de)(de)(de)(de)余量,以提高工(gong)(gong)件(jian)的(de)(de)(de)(de)精度(du)和(he)降(jiang)低表(biao)面(mian)(mian)(mian)(mian)(mian)粗糙度(du)值(zhi)得加(jia)工(gong)(gong)方法。按研(yan)(yan)(yan)磨(mo)(mo)(mo)時(shi)有無研(yan)(yan)(yan)磨(mo)(mo)(mo)液可分為干研(yan)(yan)(yan)與(yu)(yu)濕研(yan)(yan)(yan)。研(yan)(yan)(yan)磨(mo)(mo)(mo)過程中(zhong)(zhong),在(zai)(zai)研(yan)(yan)(yan)磨(mo)(mo)(mo)壓(ya)(ya)(ya)力(li)下(xia),眾多的(de)(de)(de)(de)磨(mo)(mo)(mo)料(liao)微(wei)粒(li)進(jin)行(xing)微(wei)量切削。對工(gong)(gong)件(jian)表(biao)面(mian)(mian)(mian)(mian)(mian)進(jin)行(xing)擠壓(ya)(ya)(ya)、刻劃、滑(hua)(hua)(hua)擦(ca);在(zai)(zai)研(yan)(yan)(yan)具(ju)運動中(zhong)(zhong)當研(yan)(yan)(yan)具(ju)壓(ya)(ya)(ya)嵌的(de)(de)(de)(de)磨(mo)(mo)(mo)粒(li)脫(tuo)落(luo)后及液中(zhong)(zhong)磨(mo)(mo)(mo)粒(li)相對工(gong)(gong)件(jian)發生滾(gun)(gun)動。研(yan)(yan)(yan)磨(mo)(mo)(mo)過程中(zhong)(zhong),在(zai)(zai)研(yan)(yan)(yan)磨(mo)(mo)(mo)壓(ya)(ya)(ya)力(li)的(de)(de)(de)(de)作(zuo)用下(xia),眾多磨(mo)(mo)(mo)粒(li)進(jin)行(xing)微(wei)量切削,同(tong)時(shi)被研(yan)(yan)(yan)磨(mo)(mo)(mo)表(biao)面(mian)(mian)(mian)(mian)(mian)發生微(wei)小起(qi)伏的(de)(de)(de)(de)塑性(xing)變形(xing),并且(qie)被加(jia)入的(de)(de)(de)(de)諸如硬脂酸、油酸、脂肪(fang)酸等活(huo)(huo)性(xing)物(wu)(wu)(wu)質(zhi)(zhi)與(yu)(yu)被研(yan)(yan)(yan)磨(mo)(mo)(mo)表(biao)面(mian)(mian)(mian)(mian)(mian)起(qi)化學作(zuo)用。隨著(zhu)研(yan)(yan)(yan)磨(mo)(mo)(mo)加(jia)工(gong)(gong)的(de)(de)(de)(de)進(jin)行(xing),磨(mo)(mo)(mo)具(ju)與(yu)(yu)工(gong)(gong)件(jian)表(biao)面(mian)(mian)(mian)(mian)(mian)間更趨貼近,其間充滿了微(wei)屑與(yu)(yu)破碎磨(mo)(mo)(mo)料(liao)的(de)(de)(de)(de)碎渣(zha),堵(du)(du)塞了研(yan)(yan)(yan)具(ju)表(biao)面(mian)(mian)(mian)(mian)(mian),對工(gong)(gong)件(jian)表(biao)面(mian)(mian)(mian)(mian)(mian)起(qi)滑(hua)(hua)(hua)擦(ca)作(zuo)用。所以,研(yan)(yan)(yan)磨(mo)(mo)(mo)加(jia)工(gong)(gong)的(de)(de)(de)(de)實質(zhi)(zhi)是(shi)磨(mo)(mo)(mo)粒(li)的(de)(de)(de)(de)微(wei)量切削、研(yan)(yan)(yan)磨(mo)(mo)(mo)表(biao)面(mian)(mian)(mian)(mian)(mian)微(wei)小起(qi)伏的(de)(de)(de)(de)塑性(xing)流(liu)動、表(biao)面(mian)(mian)(mian)(mian)(mian)活(huo)(huo)性(xing)物(wu)(wu)(wu)質(zhi)(zhi)的(de)(de)(de)(de)化學作(zuo)用及研(yan)(yan)(yan)具(ju)堵(du)(du)塞物(wu)(wu)(wu)與(yu)(yu)工(gong)(gong)件(jian)表(biao)面(mian)(mian)(mian)(mian)(mian)滑(hua)(hua)(hua)擦(ca)作(zuo)用的(de)(de)(de)(de)綜合(he)結果(guo)。


  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紹興機械密封將(jiang)熱量傳(chuan)給(gei)軸承,使軸承溫度升高。為了(le)控制傳(chuan)熱,所(suo)以密封(feng)的水也(ye)起到冷卻作用。


  紹興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紹興機械密封低壓側(大(da)氣)將清水(shui)、蒸汽等冷卻(que)流體直接引(yin)入密(mi)(mi)封(feng)(feng)端泄(xie)露處的(de)一(yi)種冷卻(que)方式,也稱急(ji)冷,急(ji)冷不僅(jin)冷卻(que)*,還能將密(mi)(mi)封(feng)(feng)端面(mian)周圍的(de)雜質及泄(xie)露液帶走(zou),急(ji)冷液其壓力比密(mi)(mi)封(feng)(feng)介(jie)質壓力低。急(ji)冷液應盡量采用軟(ruan)水(shui),以(yi)防(fang)止水(shui)垢產(chan)生破壞密(mi)(mi)封(feng)(feng)端面(mian)。當密(mi)(mi)封(feng)(feng)流體為(wei)易凝固、易結晶時(shi),可用蒸汽、溶劑(ji)等防(fang)止流體凝結。