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發布(bu)時間:2021-12-17 11:54:31 人氣(qi):98024 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,可以使道滘鎮機械密封摩擦端面尺(chi)寸(cun)精度(du)(du)提高,閥門的(de)密(mi)封面,幾何(he)粗糙度(du)(du)和表(biao)面粗糙度(du)(du),但不能提高密(mi)封表(biao)面的(de)相(xiang)互位置精度(du)(du)。
道滘鎮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,隨著對道滘鎮機械密封研(yan)究的(de)(de)(de)(de)(de)(de)復雜面(mian),之間(jian)(jian)的(de)(de)(de)(de)(de)(de)表(biao)(biao)面(mian)和(he)密(mi)(mi)(mi)(mi)封(feng)磨(mo)(mo)(mo)料磨(mo)(mo)(mo)具研(yan)究相對(dui)運(yun)(yun)動(dong)(dong)(dong)時,密(mi)(mi)(mi)(mi)封(feng)圈(quan)(quan)(quan)表(biao)(biao)面(mian),磨(mo)(mo)(mo)料磨(mo)(mo)(mo)具研(yan)究部(bu)分和(he)密(mi)(mi)(mi)(mi)封(feng)面(mian)之間(jian)(jian)的(de)(de)(de)(de)(de)(de)滑動(dong)(dong)(dong)或滾動(dong)(dong)(dong),切斷密(mi)(mi)(mi)(mi)封(feng)圈(quan)(quan)(quan)上(shang)薄薄的(de)(de)(de)(de)(de)(de)一層金(jin)屬表(biao)(biao)面(mian)。密(mi)(mi)(mi)(mi)封(feng)凸峰部(bu)分的(de)(de)(de)(de)(de)(de)圈(quan)(quan)(quan),表(biao)(biao)面(mian)研(yan)磨(mo)(mo)(mo),然后(hou)逐漸達(da)到所要(yao)求的(de)(de)(de)(de)(de)(de)幾何形(xing)(xing)狀。不(bu)僅(jin)是(shi)金(jin)屬磨(mo)(mo)(mo)料的(de)(de)(de)(de)(de)(de)研(yan)磨(mo)(mo)(mo)加工,以(yi)及化學作(zuo)用。研(yan)磨(mo)(mo)(mo)油(you)可使加工表(biao)(biao)面(mian)形(xing)(xing)成的(de)(de)(de)(de)(de)(de)氧化膜,從而(er)加快研(yan)磨(mo)(mo)(mo)過程。地面(mian)運(yun)(yun)動(dong)(dong)(dong)相對(dui)運(yun)(yun)動(dong)(dong)(dong)的(de)(de)(de)(de)(de)(de)表(biao)(biao)面(mian)和(he)密(mi)(mi)(mi)(mi)封(feng)圈(quan)(quan)(quan)密(mi)(mi)(mi)(mi)封(feng)圈(quan)(quan)(quan)的(de)(de)(de)(de)(de)(de)研(yan)究,對(dui)每(mei)個點的(de)(de)(de)(de)(de)(de)表(biao)(biao)面(mian)上(shang)的(de)(de)(de)(de)(de)(de)道(dao)路(lu)和(he)相對(dui)滑動(dong)(dong)(dong)的(de)(de)(de)(de)(de)(de)研(yan)究應該(gai)是(shi)一樣的(de)(de)(de)(de)(de)(de)。和(he)相對(dui)運(yun)(yun)動(dong)(dong)(dong)方向改變(bian)。改變(bian)密(mi)(mi)(mi)(mi)封(feng)環內的(de)(de)(de)(de)(de)(de)每(mei)個粒(li)(li)子(zi)的(de)(de)(de)(de)(de)(de)表(biao)(biao)面(mian)上(shang)運(yun)(yun)動(dong)(dong)(dong)的(de)(de)(de)(de)(de)(de)方向不(bu)會(hui)重復他們(men)的(de)(de)(de)(de)(de)(de)軌跡,以(yi)避免磨(mo)(mo)(mo)損明顯增加了密(mi)(mi)(mi)(mi)封(feng)環的(de)(de)(de)(de)(de)(de)表(biao)(biao)面(mian)粗糙度。此外,運(yun)(yun)動(dong)(dong)(dong)方向的(de)(de)(de)(de)(de)(de)改變(bian)不(bu)能(neng)使磨(mo)(mo)(mo)粒(li)(li)分布比較均勻,且均勻切斷金(jin)屬密(mi)(mi)(mi)(mi)封(feng)環的(de)(de)(de)(de)(de)(de)表(biao)(biao)面(mian)。
道滘鎮機械密封研(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)是利用(yong)涂敷或者壓嵌游離磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)粒(li)(li)(li)與(yu)(yu)研(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)劑的(de)(de)混合物(wu),在(zai)(zai)一定剛性的(de)(de)軟質研(yan)(yan)(yan)具(ju)上(shang),通過研(yan)(yan)(yan)具(ju)與(yu)(yu)工(gong)(gong)件(jian)(jian)向磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)料施加(jia)(jia)(jia)(jia)一定壓力,磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)料滾(gun)(gun)動(dong)與(yu)(yu)滑動(dong),從被(bei)(bei)研(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)工(gong)(gong)件(jian)(jian)上(shang)去除極薄的(de)(de)余量(liang),以(yi)提高工(gong)(gong)件(jian)(jian)的(de)(de)精度和降低表(biao)(biao)(biao)(biao)面(mian)(mian)粗糙度值(zhi)得加(jia)(jia)(jia)(jia)工(gong)(gong)方法。按研(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)時(shi)有無研(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)液可分為(wei)干(gan)研(yan)(yan)(yan)與(yu)(yu)濕研(yan)(yan)(yan)。研(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)過程中(zhong),在(zai)(zai)研(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)壓力下,眾多的(de)(de)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)料微(wei)粒(li)(li)(li)進行微(wei)量(liang)切削(xue)。對(dui)工(gong)(gong)件(jian)(jian)表(biao)(biao)(biao)(biao)面(mian)(mian)進行擠壓、刻劃、滑擦(ca);在(zai)(zai)研(yan)(yan)(yan)具(ju)運動(dong)中(zhong)當研(yan)(yan)(yan)具(ju)壓嵌的(de)(de)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)粒(li)(li)(li)脫(tuo)落后及液中(zhong)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)粒(li)(li)(li)相(xiang)對(dui)工(gong)(gong)件(jian)(jian)發生滾(gun)(gun)動(dong)。研(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)過程中(zhong),在(zai)(zai)研(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)壓力的(de)(de)作(zuo)用(yong)下,眾多磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)粒(li)(li)(li)進行微(wei)量(liang)切削(xue),同(tong)時(shi)被(bei)(bei)研(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)表(biao)(biao)(biao)(biao)面(mian)(mian)發生微(wei)小起(qi)伏的(de)(de)塑性變形,并且被(bei)(bei)加(jia)(jia)(jia)(jia)入的(de)(de)諸如硬脂(zhi)(zhi)酸、油酸、脂(zhi)(zhi)肪酸等活(huo)性物(wu)質與(yu)(yu)被(bei)(bei)研(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)表(biao)(biao)(biao)(biao)面(mian)(mian)起(qi)化學作(zuo)用(yong)。隨著研(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)加(jia)(jia)(jia)(jia)工(gong)(gong)的(de)(de)進行,磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)具(ju)與(yu)(yu)工(gong)(gong)件(jian)(jian)表(biao)(biao)(biao)(biao)面(mian)(mian)間更(geng)趨貼近,其間充滿了(le)微(wei)屑與(yu)(yu)破碎磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)料的(de)(de)碎渣,堵塞了(le)研(yan)(yan)(yan)具(ju)表(biao)(biao)(biao)(biao)面(mian)(mian),對(dui)工(gong)(gong)件(jian)(jian)表(biao)(biao)(biao)(biao)面(mian)(mian)起(qi)滑擦(ca)作(zuo)用(yong)。所以(yi),研(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)加(jia)(jia)(jia)(jia)工(gong)(gong)的(de)(de)實質是磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)粒(li)(li)(li)的(de)(de)微(wei)量(liang)切削(xue)、研(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)表(biao)(biao)(biao)(biao)面(mian)(mian)微(wei)小起(qi)伏的(de)(de)塑性流(liu)動(dong)、表(biao)(biao)(biao)(biao)面(mian)(mian)活(huo)性物(wu)質的(de)(de)化學作(zuo)用(yong)及研(yan)(yan)(yan)具(ju)堵塞物(wu)與(yu)(yu)工(gong)(gong)件(jian)(jian)表(biao)(biao)(biao)(biao)面(mian)(mian)滑擦(ca)作(zuo)用(yong)的(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道滘鎮機械密封將熱(re)(re)量傳給軸承(cheng),使軸承(cheng)溫度升高。為了控制傳熱(re)(re),所以(yi)密封的水也起到(dao)冷卻作(zuo)用。
道滘鎮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道滘鎮機械密封低(di)壓側(大氣(qi))將(jiang)清(qing)水(shui)、蒸汽(qi)等冷(leng)(leng)(leng)(leng)卻流(liu)體直接引入密封端泄露處的(de)一(yi)種冷(leng)(leng)(leng)(leng)卻方(fang)式,也稱(cheng)急(ji)冷(leng)(leng)(leng)(leng),急(ji)冷(leng)(leng)(leng)(leng)不僅冷(leng)(leng)(leng)(leng)卻*,還(huan)能將(jiang)密封端面周圍的(de)雜(za)質(zhi)(zhi)及泄露液帶走,急(ji)冷(leng)(leng)(leng)(leng)液其壓力比密封介質(zhi)(zhi)壓力低(di)。急(ji)冷(leng)(leng)(leng)(leng)液應盡量(liang)采用(yong)軟水(shui),以(yi)防(fang)止(zhi)水(shui)垢產生破(po)壞密封端面。當密封流(liu)體為易凝(ning)固、易結晶時,可用(yong)蒸汽(qi)、溶劑等防(fang)止(zhi)流(liu)體凝(ning)結。