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發布時(shi)間(jian):2021-12-17 11:54:31 人氣:97270 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,可以使湟中機械密封摩擦端面尺(chi)寸(cun)精度提(ti)(ti)高(gao),閥門的密封面,幾何粗(cu)糙度和表(biao)面粗(cu)糙度,但不(bu)能提(ti)(ti)高(gao)密封表(biao)面的相互位置精度。
湟中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,隨著對湟中機械密封研(yan)(yan)究(jiu)的(de)(de)(de)(de)(de)復雜面(mian)(mian),之間(jian)的(de)(de)(de)(de)(de)表(biao)(biao)(biao)面(mian)(mian)和(he)密(mi)(mi)(mi)封(feng)(feng)磨(mo)(mo)料(liao)(liao)磨(mo)(mo)具(ju)研(yan)(yan)究(jiu)相對(dui)運(yun)動(dong)(dong)(dong)(dong)時,密(mi)(mi)(mi)封(feng)(feng)圈(quan)表(biao)(biao)(biao)面(mian)(mian),磨(mo)(mo)料(liao)(liao)磨(mo)(mo)具(ju)研(yan)(yan)究(jiu)部(bu)分(fen)和(he)密(mi)(mi)(mi)封(feng)(feng)面(mian)(mian)之間(jian)的(de)(de)(de)(de)(de)滑(hua)動(dong)(dong)(dong)(dong)或滾動(dong)(dong)(dong)(dong),切(qie)斷密(mi)(mi)(mi)封(feng)(feng)圈(quan)上(shang)薄薄的(de)(de)(de)(de)(de)一(yi)層(ceng)金屬表(biao)(biao)(biao)面(mian)(mian)。密(mi)(mi)(mi)封(feng)(feng)凸(tu)峰部(bu)分(fen)的(de)(de)(de)(de)(de)圈(quan),表(biao)(biao)(biao)面(mian)(mian)研(yan)(yan)磨(mo)(mo),然后(hou)逐(zhu)漸達(da)到所(suo)要求(qiu)的(de)(de)(de)(de)(de)幾何(he)形(xing)狀(zhuang)。不(bu)僅是金屬磨(mo)(mo)料(liao)(liao)的(de)(de)(de)(de)(de)研(yan)(yan)磨(mo)(mo)加(jia)工,以及化學作用。研(yan)(yan)磨(mo)(mo)油(you)可使加(jia)工表(biao)(biao)(biao)面(mian)(mian)形(xing)成的(de)(de)(de)(de)(de)氧化膜,從而加(jia)快(kuai)研(yan)(yan)磨(mo)(mo)過程(cheng)。地面(mian)(mian)運(yun)動(dong)(dong)(dong)(dong)相對(dui)運(yun)動(dong)(dong)(dong)(dong)的(de)(de)(de)(de)(de)表(biao)(biao)(biao)面(mian)(mian)和(he)密(mi)(mi)(mi)封(feng)(feng)圈(quan)密(mi)(mi)(mi)封(feng)(feng)圈(quan)的(de)(de)(de)(de)(de)研(yan)(yan)究(jiu),對(dui)每(mei)個(ge)點(dian)的(de)(de)(de)(de)(de)表(biao)(biao)(biao)面(mian)(mian)上(shang)的(de)(de)(de)(de)(de)道路和(he)相對(dui)滑(hua)動(dong)(dong)(dong)(dong)的(de)(de)(de)(de)(de)研(yan)(yan)究(jiu)應該是一(yi)樣的(de)(de)(de)(de)(de)。和(he)相對(dui)運(yun)動(dong)(dong)(dong)(dong)方向(xiang)改變(bian)。改變(bian)密(mi)(mi)(mi)封(feng)(feng)環內的(de)(de)(de)(de)(de)每(mei)個(ge)粒(li)子的(de)(de)(de)(de)(de)表(biao)(biao)(biao)面(mian)(mian)上(shang)運(yun)動(dong)(dong)(dong)(dong)的(de)(de)(de)(de)(de)方向(xiang)不(bu)會(hui)重復他們(men)的(de)(de)(de)(de)(de)軌跡,以避免磨(mo)(mo)損明顯(xian)增加(jia)了密(mi)(mi)(mi)封(feng)(feng)環的(de)(de)(de)(de)(de)表(biao)(biao)(biao)面(mian)(mian)粗糙度。此外(wai),運(yun)動(dong)(dong)(dong)(dong)方向(xiang)的(de)(de)(de)(de)(de)改變(bian)不(bu)能使磨(mo)(mo)粒(li)分(fen)布比較均勻,且(qie)均勻切(qie)斷金屬密(mi)(mi)(mi)封(feng)(feng)環的(de)(de)(de)(de)(de)表(biao)(biao)(biao)面(mian)(mian)。
湟中機械密封研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)是利(li)用(yong)涂敷或者壓(ya)(ya)(ya)嵌(qian)游離磨(mo)(mo)(mo)(mo)(mo)粒與研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)劑(ji)的(de)(de)(de)混合(he)(he)物(wu),在(zai)(zai)一定(ding)(ding)剛性(xing)的(de)(de)(de)軟質研(yan)(yan)(yan)(yan)(yan)具(ju)上,通過研(yan)(yan)(yan)(yan)(yan)具(ju)與工(gong)件(jian)(jian)(jian)向磨(mo)(mo)(mo)(mo)(mo)料施加(jia)一定(ding)(ding)壓(ya)(ya)(ya)力(li),磨(mo)(mo)(mo)(mo)(mo)料滾(gun)動(dong)與滑(hua)動(dong),從被研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)工(gong)件(jian)(jian)(jian)上去除極薄的(de)(de)(de)余(yu)量(liang),以提高工(gong)件(jian)(jian)(jian)的(de)(de)(de)精度(du)(du)和降(jiang)低表(biao)(biao)(biao)面(mian)(mian)粗糙度(du)(du)值得加(jia)工(gong)方法(fa)。按研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)時有無研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)液可分為(wei)干研(yan)(yan)(yan)(yan)(yan)與濕研(yan)(yan)(yan)(yan)(yan)。研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)過程中,在(zai)(zai)研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)壓(ya)(ya)(ya)力(li)下,眾(zhong)多的(de)(de)(de)磨(mo)(mo)(mo)(mo)(mo)料微(wei)(wei)(wei)粒進行(xing)微(wei)(wei)(wei)量(liang)切削。對工(gong)件(jian)(jian)(jian)表(biao)(biao)(biao)面(mian)(mian)進行(xing)擠(ji)壓(ya)(ya)(ya)、刻劃、滑(hua)擦(ca)(ca);在(zai)(zai)研(yan)(yan)(yan)(yan)(yan)具(ju)運動(dong)中當研(yan)(yan)(yan)(yan)(yan)具(ju)壓(ya)(ya)(ya)嵌(qian)的(de)(de)(de)磨(mo)(mo)(mo)(mo)(mo)粒脫落(luo)后及(ji)液中磨(mo)(mo)(mo)(mo)(mo)粒相對工(gong)件(jian)(jian)(jian)發(fa)(fa)生滾(gun)動(dong)。研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)過程中,在(zai)(zai)研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)壓(ya)(ya)(ya)力(li)的(de)(de)(de)作(zuo)(zuo)用(yong)下,眾(zhong)多磨(mo)(mo)(mo)(mo)(mo)粒進行(xing)微(wei)(wei)(wei)量(liang)切削,同(tong)時被研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)表(biao)(biao)(biao)面(mian)(mian)發(fa)(fa)生微(wei)(wei)(wei)小(xiao)起伏(fu)的(de)(de)(de)塑性(xing)變形,并且被加(jia)入的(de)(de)(de)諸(zhu)如硬脂酸、油(you)酸、脂肪酸等活性(xing)物(wu)質與被研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)表(biao)(biao)(biao)面(mian)(mian)起化學作(zuo)(zuo)用(yong)。隨(sui)著研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)加(jia)工(gong)的(de)(de)(de)進行(xing),磨(mo)(mo)(mo)(mo)(mo)具(ju)與工(gong)件(jian)(jian)(jian)表(biao)(biao)(biao)面(mian)(mian)間更趨(qu)貼近,其間充(chong)滿(man)了(le)微(wei)(wei)(wei)屑(xie)與破碎磨(mo)(mo)(mo)(mo)(mo)料的(de)(de)(de)碎渣,堵塞(sai)了(le)研(yan)(yan)(yan)(yan)(yan)具(ju)表(biao)(biao)(biao)面(mian)(mian),對工(gong)件(jian)(jian)(jian)表(biao)(biao)(biao)面(mian)(mian)起滑(hua)擦(ca)(ca)作(zuo)(zuo)用(yong)。所以,研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)加(jia)工(gong)的(de)(de)(de)實(shi)質是磨(mo)(mo)(mo)(mo)(mo)粒的(de)(de)(de)微(wei)(wei)(wei)量(liang)切削、研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)表(biao)(biao)(biao)面(mian)(mian)微(wei)(wei)(wei)小(xiao)起伏(fu)的(de)(de)(de)塑性(xing)流動(dong)、表(biao)(biao)(biao)面(mian)(mian)活性(xing)物(wu)質的(de)(de)(de)化學作(zuo)(zuo)用(yong)及(ji)研(yan)(yan)(yan)(yan)(yan)具(ju)堵塞(sai)物(wu)與工(gong)件(jian)(jian)(jian)表(biao)(biao)(biao)面(mian)(mian)滑(hua)擦(ca)(ca)作(zuo)(zuo)用(yong)的(de)(de)(de)綜合(he)(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湟中機械密封將熱(re)量傳(chuan)給軸承,使軸承溫(wen)度升高。為(wei)了控制傳(chuan)熱(re),所以(yi)密封的(de)水也(ye)起到冷卻(que)作用。
湟中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湟中機械密封低壓(ya)側(ce)(大氣)將清(qing)水、蒸汽等冷(leng)(leng)卻(que)(que)流(liu)體直(zhi)接引(yin)入密(mi)(mi)封(feng)(feng)端泄(xie)露處的一種冷(leng)(leng)卻(que)(que)方(fang)式,也稱(cheng)急(ji)(ji)冷(leng)(leng),急(ji)(ji)冷(leng)(leng)不僅(jin)冷(leng)(leng)卻(que)(que)*,還能將密(mi)(mi)封(feng)(feng)端面(mian)周圍(wei)的雜(za)質(zhi)及泄(xie)露液(ye)帶走,急(ji)(ji)冷(leng)(leng)液(ye)其壓(ya)力比密(mi)(mi)封(feng)(feng)介質(zhi)壓(ya)力低。急(ji)(ji)冷(leng)(leng)液(ye)應盡量(liang)采用軟水,以防止水垢產生破壞密(mi)(mi)封(feng)(feng)端面(mian)。當(dang)密(mi)(mi)封(feng)(feng)流(liu)體為易凝(ning)固、易結晶時,可(ke)用蒸汽、溶劑(ji)等防止流(liu)體凝(ning)結。