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發布時間:2021-12-17 11:54:31 人氣:97216 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,可以使應城機械密封摩(mo)擦端面(mian)(mian)尺寸(cun)精度提高(gao),閥門的(de)密封(feng)面(mian)(mian),幾何(he)粗(cu)糙度和表(biao)面(mian)(mian)粗(cu)糙度,但不能提高(gao)密封(feng)表(biao)面(mian)(mian)的(de)相互位置精度。
應城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,隨著對應城機械密封研(yan)(yan)究(jiu)的(de)(de)(de)(de)復雜面(mian)(mian)(mian)(mian),之(zhi)間的(de)(de)(de)(de)表(biao)(biao)面(mian)(mian)(mian)(mian)和(he)密(mi)(mi)(mi)(mi)封(feng)(feng)磨(mo)料磨(mo)具研(yan)(yan)究(jiu)相對(dui)運(yun)動時,密(mi)(mi)(mi)(mi)封(feng)(feng)圈(quan)表(biao)(biao)面(mian)(mian)(mian)(mian),磨(mo)料磨(mo)具研(yan)(yan)究(jiu)部(bu)分(fen)和(he)密(mi)(mi)(mi)(mi)封(feng)(feng)面(mian)(mian)(mian)(mian)之(zhi)間的(de)(de)(de)(de)滑動或(huo)滾動,切斷密(mi)(mi)(mi)(mi)封(feng)(feng)圈(quan)上薄薄的(de)(de)(de)(de)一層金(jin)屬(shu)表(biao)(biao)面(mian)(mian)(mian)(mian)。密(mi)(mi)(mi)(mi)封(feng)(feng)凸峰部(bu)分(fen)的(de)(de)(de)(de)圈(quan),表(biao)(biao)面(mian)(mian)(mian)(mian)研(yan)(yan)磨(mo),然后逐(zhu)漸達到所(suo)要求的(de)(de)(de)(de)幾何形狀(zhuang)。不僅是(shi)金(jin)屬(shu)磨(mo)料的(de)(de)(de)(de)研(yan)(yan)磨(mo)加(jia)工,以(yi)及化學作用。研(yan)(yan)磨(mo)油可使加(jia)工表(biao)(biao)面(mian)(mian)(mian)(mian)形成的(de)(de)(de)(de)氧化膜,從而加(jia)快(kuai)研(yan)(yan)磨(mo)過程。地面(mian)(mian)(mian)(mian)運(yun)動相對(dui)運(yun)動的(de)(de)(de)(de)表(biao)(biao)面(mian)(mian)(mian)(mian)和(he)密(mi)(mi)(mi)(mi)封(feng)(feng)圈(quan)密(mi)(mi)(mi)(mi)封(feng)(feng)圈(quan)的(de)(de)(de)(de)研(yan)(yan)究(jiu),對(dui)每個(ge)點的(de)(de)(de)(de)表(biao)(biao)面(mian)(mian)(mian)(mian)上的(de)(de)(de)(de)道(dao)路和(he)相對(dui)滑動的(de)(de)(de)(de)研(yan)(yan)究(jiu)應該(gai)是(shi)一樣(yang)的(de)(de)(de)(de)。和(he)相對(dui)運(yun)動方向改(gai)變。改(gai)變密(mi)(mi)(mi)(mi)封(feng)(feng)環(huan)內的(de)(de)(de)(de)每個(ge)粒(li)子(zi)的(de)(de)(de)(de)表(biao)(biao)面(mian)(mian)(mian)(mian)上運(yun)動的(de)(de)(de)(de)方向不會重復他們的(de)(de)(de)(de)軌(gui)跡,以(yi)避免磨(mo)損明顯增加(jia)了密(mi)(mi)(mi)(mi)封(feng)(feng)環(huan)的(de)(de)(de)(de)表(biao)(biao)面(mian)(mian)(mian)(mian)粗糙度。此外,運(yun)動方向的(de)(de)(de)(de)改(gai)變不能使磨(mo)粒(li)分(fen)布比較均勻,且均勻切斷金(jin)屬(shu)密(mi)(mi)(mi)(mi)封(feng)(feng)環(huan)的(de)(de)(de)(de)表(biao)(biao)面(mian)(mian)(mian)(mian)。
應城機械密封研(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)是(shi)利用(yong)(yong)涂(tu)敷或者壓嵌游(you)離磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)粒與(yu)(yu)研(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)劑的(de)(de)混合(he)物,在一定(ding)剛性的(de)(de)軟質(zhi)(zhi)研(yan)(yan)(yan)(yan)(yan)(yan)具(ju)上,通過(guo)研(yan)(yan)(yan)(yan)(yan)(yan)具(ju)與(yu)(yu)工(gong)(gong)(gong)(gong)件(jian)(jian)向磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)料(liao)施(shi)加(jia)一定(ding)壓力,磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)料(liao)滾動(dong)與(yu)(yu)滑(hua)動(dong),從被(bei)研(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)工(gong)(gong)(gong)(gong)件(jian)(jian)上去除極薄(bo)的(de)(de)余量(liang),以提高(gao)工(gong)(gong)(gong)(gong)件(jian)(jian)的(de)(de)精度(du)和降低表(biao)(biao)面粗糙度(du)值得加(jia)工(gong)(gong)(gong)(gong)方法(fa)。按(an)研(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)時有無研(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)液可分為(wei)干研(yan)(yan)(yan)(yan)(yan)(yan)與(yu)(yu)濕研(yan)(yan)(yan)(yan)(yan)(yan)。研(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)過(guo)程中,在研(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)壓力下(xia),眾(zhong)多的(de)(de)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)料(liao)微粒進(jin)行微量(liang)切削。對(dui)(dui)工(gong)(gong)(gong)(gong)件(jian)(jian)表(biao)(biao)面進(jin)行擠壓、刻劃、滑(hua)擦(ca)(ca);在研(yan)(yan)(yan)(yan)(yan)(yan)具(ju)運動(dong)中當研(yan)(yan)(yan)(yan)(yan)(yan)具(ju)壓嵌的(de)(de)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)粒脫(tuo)落后及液中磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)粒相對(dui)(dui)工(gong)(gong)(gong)(gong)件(jian)(jian)發生滾動(dong)。研(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)過(guo)程中,在研(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)壓力的(de)(de)作(zuo)用(yong)(yong)下(xia),眾(zhong)多磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)粒進(jin)行微量(liang)切削,同時被(bei)研(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)表(biao)(biao)面發生微小起伏的(de)(de)塑性變形,并(bing)且(qie)被(bei)加(jia)入(ru)的(de)(de)諸如硬脂酸(suan)、油酸(suan)、脂肪酸(suan)等活性物質(zhi)(zhi)與(yu)(yu)被(bei)研(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)表(biao)(biao)面起化學(xue)(xue)作(zuo)用(yong)(yong)。隨(sui)著研(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)加(jia)工(gong)(gong)(gong)(gong)的(de)(de)進(jin)行,磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)具(ju)與(yu)(yu)工(gong)(gong)(gong)(gong)件(jian)(jian)表(biao)(biao)面間更趨(qu)貼近,其(qi)間充(chong)滿了微屑與(yu)(yu)破碎磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)料(liao)的(de)(de)碎渣(zha),堵塞(sai)了研(yan)(yan)(yan)(yan)(yan)(yan)具(ju)表(biao)(biao)面,對(dui)(dui)工(gong)(gong)(gong)(gong)件(jian)(jian)表(biao)(biao)面起滑(hua)擦(ca)(ca)作(zuo)用(yong)(yong)。所以,研(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)加(jia)工(gong)(gong)(gong)(gong)的(de)(de)實質(zhi)(zhi)是(shi)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)粒的(de)(de)微量(liang)切削、研(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)(mo)(mo)表(biao)(biao)面微小起伏的(de)(de)塑性流動(dong)、表(biao)(biao)面活性物質(zhi)(zhi)的(de)(de)化學(xue)(xue)作(zuo)用(yong)(yong)及研(yan)(yan)(yan)(yan)(yan)(yan)具(ju)堵塞(sai)物與(yu)(yu)工(gong)(gong)(gong)(gong)件(jian)(jian)表(biao)(biao)面滑(hua)擦(ca)(ca)作(zuo)用(yong)(yong)的(de)(de)綜合(he)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應城機械密封將熱量(liang)傳(chuan)給軸承,使軸承溫度升高。為(wei)了控制傳(chuan)熱,所以(yi)密封的水也起(qi)到冷卻作用(yong)。
應城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應城機械密封低壓(ya)側(大(da)氣)將清水(shui)、蒸汽(qi)等(deng)冷卻(que)流體直接引入密(mi)封(feng)(feng)端(duan)泄(xie)露(lu)處的一種冷卻(que)方式,也(ye)稱急冷,急冷不僅(jin)冷卻(que)*,還能將密(mi)封(feng)(feng)端(duan)面周圍(wei)的雜質及泄(xie)露(lu)液(ye)帶走,急冷液(ye)其壓(ya)力比密(mi)封(feng)(feng)介(jie)質壓(ya)力低。急冷液(ye)應盡(jin)量采用軟水(shui),以(yi)防(fang)止水(shui)垢產生破壞密(mi)封(feng)(feng)端(duan)面。當(dang)密(mi)封(feng)(feng)流體為易凝(ning)固(gu)、易結晶(jing)時(shi),可(ke)用蒸汽(qi)、溶劑等(deng)防(fang)止流體凝(ning)結。