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發布時間:2021-12-17 11:54:31 人氣:98019 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,可以使羅平機械密封摩(mo)擦端(duan)面尺寸精度(du)提高,閥(fa)門(men)的密封(feng)面,幾(ji)何粗(cu)糙(cao)(cao)度(du)和表面粗(cu)糙(cao)(cao)度(du),但不(bu)能提高密封(feng)表面的相(xiang)互(hu)位置精度(du)。
羅平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,隨著對羅平機械密封研(yan)(yan)究的(de)(de)(de)(de)復雜面(mian),之(zhi)間(jian)的(de)(de)(de)(de)表(biao)(biao)面(mian)和(he)密(mi)封磨(mo)(mo)(mo)料磨(mo)(mo)(mo)具研(yan)(yan)究相(xiang)對(dui)(dui)運(yun)動時,密(mi)封圈(quan)表(biao)(biao)面(mian),磨(mo)(mo)(mo)料磨(mo)(mo)(mo)具研(yan)(yan)究部分和(he)密(mi)封面(mian)之(zhi)間(jian)的(de)(de)(de)(de)滑動或滾動,切(qie)斷密(mi)封圈(quan)上(shang)薄薄的(de)(de)(de)(de)一層金(jin)屬表(biao)(biao)面(mian)。密(mi)封凸峰部分的(de)(de)(de)(de)圈(quan),表(biao)(biao)面(mian)研(yan)(yan)磨(mo)(mo)(mo),然后逐漸達到所要求的(de)(de)(de)(de)幾(ji)何形狀(zhuang)。不(bu)僅(jin)是(shi)金(jin)屬磨(mo)(mo)(mo)料的(de)(de)(de)(de)研(yan)(yan)磨(mo)(mo)(mo)加(jia)(jia)工(gong),以及化學(xue)作用。研(yan)(yan)磨(mo)(mo)(mo)油(you)可使加(jia)(jia)工(gong)表(biao)(biao)面(mian)形成的(de)(de)(de)(de)氧(yang)化膜,從而加(jia)(jia)快研(yan)(yan)磨(mo)(mo)(mo)過(guo)程。地面(mian)運(yun)動相(xiang)對(dui)(dui)運(yun)動的(de)(de)(de)(de)表(biao)(biao)面(mian)和(he)密(mi)封圈(quan)密(mi)封圈(quan)的(de)(de)(de)(de)研(yan)(yan)究,對(dui)(dui)每個點的(de)(de)(de)(de)表(biao)(biao)面(mian)上(shang)的(de)(de)(de)(de)道路和(he)相(xiang)對(dui)(dui)滑動的(de)(de)(de)(de)研(yan)(yan)究應該是(shi)一樣的(de)(de)(de)(de)。和(he)相(xiang)對(dui)(dui)運(yun)動方向(xiang)改變。改變密(mi)封環內的(de)(de)(de)(de)每個粒子(zi)的(de)(de)(de)(de)表(biao)(biao)面(mian)上(shang)運(yun)動的(de)(de)(de)(de)方向(xiang)不(bu)會重復他們的(de)(de)(de)(de)軌(gui)跡,以避免磨(mo)(mo)(mo)損明顯增加(jia)(jia)了密(mi)封環的(de)(de)(de)(de)表(biao)(biao)面(mian)粗糙度。此(ci)外,運(yun)動方向(xiang)的(de)(de)(de)(de)改變不(bu)能使磨(mo)(mo)(mo)粒分布(bu)比(bi)較均勻(yun),且均勻(yun)切(qie)斷金(jin)屬密(mi)封環的(de)(de)(de)(de)表(biao)(biao)面(mian)。
羅平機械密封研(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)是利(li)用(yong)涂敷或者壓(ya)嵌(qian)游離(li)磨(mo)(mo)(mo)(mo)粒與(yu)(yu)研(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)劑的(de)(de)(de)(de)(de)混合(he)物,在(zai)一(yi)定剛性(xing)(xing)的(de)(de)(de)(de)(de)軟質研(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)件(jian)(jian)向磨(mo)(mo)(mo)(mo)料(liao)施加一(yi)定壓(ya)力(li),磨(mo)(mo)(mo)(mo)料(liao)滾動與(yu)(yu)滑動,從被(bei)研(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)工(gong)(gong)件(jian)(jian)上去(qu)除極薄的(de)(de)(de)(de)(de)余量,以(yi)提高(gao)工(gong)(gong)件(jian)(jian)的(de)(de)(de)(de)(de)精度和降低表(biao)(biao)面(mian)(mian)(mian)(mian)(mian)粗糙度值得加工(gong)(gong)方法(fa)。按研(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)時有無研(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)液(ye)可分為干研(yan)(yan)(yan)(yan)(yan)(yan)與(yu)(yu)濕(shi)研(yan)(yan)(yan)(yan)(yan)(yan)。研(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)過(guo)程中,在(zai)研(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)壓(ya)力(li)下(xia),眾多的(de)(de)(de)(de)(de)磨(mo)(mo)(mo)(mo)料(liao)微(wei)(wei)粒進(jin)行(xing)微(wei)(wei)量切削(xue)。對工(gong)(gong)件(jian)(jian)表(biao)(biao)面(mian)(mian)(mian)(mian)(mian)進(jin)行(xing)擠(ji)壓(ya)、刻(ke)劃(hua)、滑擦;在(zai)研(yan)(yan)(yan)(yan)(yan)(yan)具(ju)運動中當研(yan)(yan)(yan)(yan)(yan)(yan)具(ju)壓(ya)嵌(qian)的(de)(de)(de)(de)(de)磨(mo)(mo)(mo)(mo)粒脫(tuo)落(luo)后及(ji)液(ye)中磨(mo)(mo)(mo)(mo)粒相對工(gong)(gong)件(jian)(jian)發(fa)(fa)生(sheng)滾動。研(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)過(guo)程中,在(zai)研(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)壓(ya)力(li)的(de)(de)(de)(de)(de)作(zuo)用(yong)下(xia),眾多磨(mo)(mo)(mo)(mo)粒進(jin)行(xing)微(wei)(wei)量切削(xue),同時被(bei)研(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)表(biao)(biao)面(mian)(mian)(mian)(mian)(mian)發(fa)(fa)生(sheng)微(wei)(wei)小(xiao)起伏(fu)的(de)(de)(de)(de)(de)塑性(xing)(xing)變形,并(bing)且被(bei)加入的(de)(de)(de)(de)(de)諸如硬脂(zhi)(zhi)酸(suan)、油酸(suan)、脂(zhi)(zhi)肪酸(suan)等活(huo)性(xing)(xing)物質與(yu)(yu)被(bei)研(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)表(biao)(biao)面(mian)(mian)(mian)(mian)(mian)起化學(xue)作(zuo)用(yong)。隨著(zhu)研(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)加工(gong)(gong)的(de)(de)(de)(de)(de)進(jin)行(xing),磨(mo)(mo)(mo)(mo)具(ju)與(yu)(yu)工(gong)(gong)件(jian)(jian)表(biao)(biao)面(mian)(mian)(mian)(mian)(mian)間更趨貼近,其間充(chong)滿了(le)(le)微(wei)(wei)屑(xie)與(yu)(yu)破碎磨(mo)(mo)(mo)(mo)料(liao)的(de)(de)(de)(de)(de)碎渣,堵塞了(le)(le)研(yan)(yan)(yan)(yan)(yan)(yan)具(ju)表(biao)(biao)面(mian)(mian)(mian)(mian)(mian),對工(gong)(gong)件(jian)(jian)表(biao)(biao)面(mian)(mian)(mian)(mian)(mian)起滑擦作(zuo)用(yong)。所以(yi),研(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)加工(gong)(gong)的(de)(de)(de)(de)(de)實(shi)質是磨(mo)(mo)(mo)(mo)粒的(de)(de)(de)(de)(de)微(wei)(wei)量切削(xue)、研(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)表(biao)(biao)面(mian)(mian)(mian)(mian)(mian)微(wei)(wei)小(xiao)起伏(fu)的(de)(de)(de)(de)(de)塑性(xing)(xing)流動、表(biao)(biao)面(mian)(mian)(mian)(mian)(mian)活(huo)性(xing)(xing)物質的(de)(de)(de)(de)(de)化學(xue)作(zuo)用(yong)及(ji)研(yan)(yan)(yan)(yan)(yan)(yan)具(ju)堵塞物與(yu)(yu)工(gong)(gong)件(jian)(jian)表(biao)(biao)面(mian)(mian)(mian)(mian)(mian)滑擦作(zuo)用(yong)的(de)(de)(de)(de)(de)綜合(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羅平機械密封將(jiang)熱量傳給軸承,使(shi)軸承溫度升(sheng)高(gao)。為了控(kong)制(zhi)傳熱,所以密封的水也起到冷卻作用。
羅平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羅平機械密封低壓(ya)側(大氣)將清水(shui)、蒸(zheng)(zheng)汽(qi)等(deng)冷(leng)(leng)卻流體直接(jie)引(yin)入(ru)密封(feng)端(duan)泄露處的一種冷(leng)(leng)卻方式,也稱急冷(leng)(leng),急冷(leng)(leng)不(bu)僅(jin)冷(leng)(leng)卻*,還能將密封(feng)端(duan)面周圍的雜質(zhi)及泄露液(ye)帶走(zou),急冷(leng)(leng)液(ye)其壓(ya)力(li)比密封(feng)介質(zhi)壓(ya)力(li)低。急冷(leng)(leng)液(ye)應盡量采用軟水(shui),以防(fang)止(zhi)水(shui)垢(gou)產(chan)生破壞密封(feng)端(duan)面。當密封(feng)流體為易(yi)(yi)凝固、易(yi)(yi)結晶時,可用蒸(zheng)(zheng)汽(qi)、溶劑(ji)等(deng)防(fang)止(zhi)流體凝結。